KR101567541B1 - Coagulant Dose Optimization System and Method Based on Jar-test Techniques in Real Time - Google Patents

Abstract

The present invention provides a real-time preprocessing system and method for measuring the concentration of Jar-test in a sampled raw water, measuring the concentration of phosphorus after injecting a coagulant and testing the sample; In addition, the coagulant injection rate to be injected into the field is controlled by using the concentration before the coagulation experiment of the sample, the coagulant efficiency of the sample is obtained by using the concentration before the coagulation experiment of the sample and the concentration after the coagulation experiment of the sample, And a system and a method for controlling the coagulant injection rate injected into a site using the method.

Description

Technical Field [0001] The present invention relates to a coagulant dosing system,

The present invention relates to a method for filtering water before and after a coagulation test (Jar-test) is performed by injecting a coagulant into a raw water sample introduced in a water treatment field in which a coagulant is injected to remove the concentration of phosphorus contained in sewage and wastewater A pretreatment system and method for measuring the phosphorus concentration of the sample before the flocculation experiment and the phosphorus concentration (phosphate concentration) of the sample after the flocculation experiment are provided, and also a flocculant used for removing the phosphorus contained in the wastewater The present invention relates to a system and a method for maintaining a discharged water quality stably to a certain level (target value) even when the water quality of the influent is changed while substantially reducing the amount of water used in the wastewater. And responds to fluctuation of phosphorus concentration and flocculant efficiency within one cycle at the same time, and the coagulant injection amount (input amount) And more particularly,

Phosphorus contained in wastewater is a contaminant that promotes the eutrophication of water quality such as plant Francon breeding, so the phosphorus concentration is lowered to a certain level and discharged into rivers and streams. In the wastewater treatment plant, the wastewater is biologically treated to remove phosphorus, but the amount of the flocculant (coagulant efficiency) is not constant depending on the environmental change of the influent water or the change of activity of the microorganism during biological treatment (water temperature, toxic substances, Therefore, the bioreactor alone may not lower the phosphorus concentration to a certain level or lower. Therefore, in the wastewater treatment plant or the like, the concentration of phosphorus contained in the sampled wastewater is measured, and a predetermined coagulant is injected (injected) according to phosphorus concentration or the like to lower the concentration of phosphorus contained in the wastewater.

In wastewater treatment plants, a system is in operation to treat and remove pollutants in water. Since pollutants in water do not decompose well in a natural state and have floating characteristics such as anion colloid, they are removed by using a coagulant (PAC: Poly Aluminum Chloride, FC: Ferric Chloride, etc.) are used to remove the coagulant (precipitate) and chemical reaction. These reactions have various influencing factors and complicated mechanisms. Therefore, proper amount of the injected material is directly injected and reacted with the coagulant (drug) (Coagulation test: Generally, raw water is put in 6 jars and the amount of coagulant injected is varied to determine the optimum coagulant injection rate). It is also said.

However, it takes time to measure the phosphorus concentration (usually known as PO4-P, which is a soluble phosphate capable of measuring about 85% of the total population) on the site where the coagulant is injected. In addition, It takes time to calculate the flocculant efficiency of the influent water according to influencing factors such as suspended solids. Therefore, since the influent water quality at the site where the influent water quality changes over time is not immediately known, it is necessary to use the past inflow water quality (phosphate concentration, jar-test experiment coagulant / I have no choice but to inject.

However, since this field jar-test experiment requires more than one hour for experienced personnel, it is difficult to perform it more than twice a day. Therefore, the actual field depends on the past experience, measurement, safety factor, Jar test is used to try to reduce the difference between the predicted value and the actual demand value (actual water quality in the field), but there are many cases where the experiment can not be performed. Even if the concentration of phosphate in the soil is measured, the field phosphorus concentration measurement and on-site Jar-test test are less effective when the factors influencing the flocculation reaction of the flocculant such as phosphorus concentration, flocculant efficiency and pH are influential over time.

Therefore, in order to cope with the situation in which the phosphorus concentration of the influent changes temporally or the factors (floating substances, pH, etc.) affecting the flocculation reaction of the flocculent change in time, inevitably, Jar-test In consideration of the experimental value and safety factor, the coagulant is injected into the site, which causes a problem of over-injection of the coagulant.

In fact, Ministry of Environment survey shows that 487 public sewage treatment plants (over 500m3 / day) nationwide and 146 national wastewater treatment plants are monitored by the Tele Monitoring System (TMS) (Korea Institute of Geoscience and Mineral Resources, 2011), the amount of coagulant for the treatment of total phosphorus was exceeded so as not to exceed the discharge standard.

The total monthly average inflow concentration of the nationwide sewage treatment plant is 3.74mg / L (total inflow water quality design value: 2.0 ~ 3.5mg / L, total phosphorus discharge concentration measurement value: 0.03 ~ 2.7mg / L) Overfilling of flocculants is a common problem.

The cause of overloading of the flocculant is PAC (Poly Aluminum Chloride) flocculant, which is mainly used for the treatment of flocculants. The proper amount of the flocculant is 2 ~ 5 times the molar ratio considering the influence factors such as flocculant requirement and pH by Jar- (Guidelines for the Treatment of Chemical Tons, 2011, Ministry of Environment Directive). Since the water quality of the sewage is fluctuating over time and the Jar-test takes more than 1 hour, it is too late to cope with the enemy. Therefore, the driver should be careful not to exceed the discharge standard in spite of fluctuation of influent water quality such as phosphorus concentration and influence factors. The coagulant is continuously injected based on the severe inflow water quality.

In this case, since the water quality of the inflow water on which the coagulant is injected (such as the concentration of phosphorus and the efficiency of removing coagulants by the influence factor or the removal performance index) can not be accurately known at the time of coagulant injection, the coagulant is over- The concentration of phosphorus at the site of injection at the time of the injection of the flocculant is predicted by using the measured values of phosphate for the past inflow water already passing through the site or the concentration at the time of infusion of the influent coagulant There has been an attempt to improve the efficiency (efficacy) of the coagulant by influent factors or influencing factors on the site by predicting and using the coagulant Jar-test value for the influent that has already passed the site.

However, since the concentration of past phosphorus was used quite a long time ago, the concentration of phosphorus in the field could not be predicted in a timely manner, or the coagulant efficiency according to the Jar-test experiment was used long ago. There was a limit that could not be done. Therefore, up to now, the phosphorus concentration and the influencing factor of the influent water can be changed at the same time in any section, even if one of them mainly fluctuates according to the passage of time, so that a solution capable of coping with such an environment has not been properly prepared. In addition, a solution to cope with a sudden change in phosphorus concentration or influencing factor of the influent water was not properly prepared.

Since the concentration of phosphorus contained in the wastewater and the efficiency of the flocculant change from time to time as well as a certain time is required to measure the phosphorus concentration, the measured wastewater has passed the site where the coagulant is introduced, May be different from the phosphorus concentration of the wastewater passing through the site where the coagulant is introduced. Since the amount of the flocculant to be added is determined by the actual phosphorus concentration (actual value) and the phosphorus concentration (approximate value) of the field, problems arise due to the phosphorus concentration difference (error). That is, when the measured value of phosphorus is applied to the field using the approximate value, when the phosphorus concentration is larger than the actual concentration in the field (positive error), the phosphorus concentration is excessively used. However, when the measured concentration of phosphorus becomes smaller than the actual concentration (negative error), the coagulant is wasted. Therefore, the amount of the coagulant is decreased, It is possible to cause a problem in dropping below the target value. Also, the greater the time interval between the measurement of the wastewater and the input to the site, the greater the likelihood of such a problem occurring.

Further, when the actual amount of the coagulant is determined on the basis of the actual coagulant (drug) efficiency in the field and the efficiency of the coagulant, there arises a problem due to the difference in coagulant efficiency (error). In other words, if the applied (or measured) flocculant efficiency is greater than the actual flocculant efficiency of the site, the coagulant is used in an excessively small amount, so that the amount of flocculant used is reduced but the concentration of phosphorous in the water is lowered below the target value. And when the applied flocculant efficiency becomes smaller than the actual flocculant efficiency of the site, the flocculant is excessively injected, so that the phosphorus concentration of the water quality can be kept below the target value, but the flocculant is wasted.

Korean Patent Publication No. 10-1138319 (registered on Apr. 13, 2012) Korean Patent Publication No. 10-1301598 (registered on August 23, 2013) Korean Patent Publication No. 10-1240237 (registered on February 28, 2013)

The patent document is a method of predicting the phosphorus concentration of the wastewater passing through the site by the phosphorus concentration of a series of wastewater that has passed the site or the pretreatment apparatus for measuring only the phosphorus concentration by removing the suspended substances from the wastewater, And a system for controlling the coagulant input rate by calculating the coagulant efficiency of the wastewater using a pretreatment device for measuring the concentration of phosphorus before the coagulation experiment and after the coagulation experiment.

Thus, in order to solve the problem that the phosphorus concentration of the wastewater passing through the site at the time of the coagulant injection is not known accurately, it is necessary to use a series of measurements of the phosphorus concentration of the wastewater A method for predicting in-situ concentrations has been proposed. That is, one concentration measurement cycle is 15 minutes, and the trend of the three measured phosphorus concentrations that have already passed through the site every 15 minutes is analyzed to determine the concentration of the wastewater passing through the site in the next cycle from the past three measured concentration values The concentration of phosphorus is predicted, a predicted value to be applied to the field is obtained, and the amount of the coagulant is determined accordingly. Depending on the site, the wastewater passing through the coagulant injection site has a constant change in phosphorus concentration depending on the time of day, weather (rainy season), temperature and season, There will be a difference, and the difference will also change irregularly. Further, the predicted concentration is calculated so as to avoid the case where the phosphorus concentration of the effluent water is higher than the target value, and there is a problem that the flocculant is continuously put on the site continuously.

Conventionally, a pretreatment system has been proposed for removing suspended solids contained in wastewater and measuring phosphorus concentration. However, it is merely a pretreatment system for measuring phosphorus concentration irrespective of the flocculation test. Therefore, There arises a problem that the preprocessing for measurement can not be performed.

In addition, only the phosphorus concentration of the high concentration sample which does not perform the flocculation test is measured, and only the backfilter of the filtration filter of the filtration tank is only washed, and the inside of the filtration tank is not cleaned. , There is a problem in the accuracy of the measurement.

In addition, there arises a problem that it is not known how to treat the high-concentration sample before the coagulation test and the low-concentration sample after the coagulation test in the same filtration tank.

In the case where the filtration filter is installed in the vertical direction as in the prior art, the pressure of the water tank is largely applied to the lower portion of the filter, so that the filtration is mainly performed only in the lower portion. Or the amount of the sample contained in the water tank must be increased. This problem occurs more severely when the pores of the filter filter use a small mesh network (e.g., 100 mu m).

Also, when a small mesh network other than a general mesh network is used, it is difficult for water to pass through without a pressure, so that it is difficult to remove floating matters or the like on the surface of the filter before filtration, A problem arises.

Conventionally, a pretreatment device for removing suspended substances from wastewater and measuring the phosphorus concentration before and after the agglomeration experiment has been proposed. However, such a pretreatment device has a problem that a jarzo (jatester tank) is a filtration tank (inflow filtration tank) And the outlet of the jar is connected to the upper portion of the reservoir in which the pre-filtration sample of the filtration water tank is filled. The discharged water is discharged to the reservoir containing the pre-filtrated sample immediately below the filtration water tank through the discharge port of the jar / Since the jar which is placed on the filtration water tank can not be cleaned while filtering the sample discharged from the jarozo in the filtration water tank, there is a problem that the pre-treatment time becomes longer because the jar is to be washed until the filtration is finished.

Since the sample can not be processed in the filtration water tank during the washing of the jar water tank (jatester tank) in the related art (the washing water having been washed through the jar water tank is drained to the bottom of the jar water tank and flows into the sample reservoir of the filtering water tank before the filtration) There is a problem that the pre-treatment time is prolonged since it is necessary to wait until the washing is completed.

Further, conventionally, since the filtration water tank is washed after the concentration measurement is completed, there arises a problem that the pretreatment time is prolonged.

Further, since the washing water for washing the jar water tank is discharged to the filtering water tank in the past, it takes time to wash the washing water for washing the jar water tank to the filtration water tank, or the filtration water tank may be separately washed Therefore, if the pretreatment system is applied to the field, the processing time of one cycle must be considerably long. If the cleaning water is not washed using a separate washing nozzle, there may be a problem in cleaning the filtering water tank.

In this way, conventionally, after the experiment of coagulation of the previous sample is completed and the coagulated sample is newly sampled after completion of the measurement of the pollutant, that is, before the next sampling, the former sample is agglomerated, Because the substance concentration was measured and cleaned, the concentration of contaminants in the influent and the efficiency of the flocculant in the inflow water, which is considerably far away from the site in the inflow water (which would have arrived at the site before) before the influent passing through the site at the time of injection, Concentration, and flocculant efficiency, there arises a problem that the actual concentration of the contaminant and the flocculant efficiency are significantly different from each other. That is, conventionally, filtration and measurement for the sample before the coagulation experiment are started, washing is started only after the measurement is completed, and filtration and measurement for the sample are started after the washing is finished. After the filtration and measurement are started, Is started, the cycle ends after the washing is finished, and the above steps are repeated with respect to the sample of the next cycle. Therefore, there arises a problem that the processing time of one cycle for obtaining the flocculant efficiency is considerably long.

Conventionally, a method of determining the coagulant injection rate by varying phosphorus concentration and a method of determining the coagulant injection rate by varying coagulant efficiency can not be solved in one cycle in order to solve the problem of changing the phosphorus concentration and the coagulant efficiency on the spot, In addition to proposing a solution in a separate cycle, there is also a problem that it is not possible to know how to operate within a cycle in order to operate in different cycle cycles. That is, the amount of the coagulant injected may be determined separately in consideration of the variation of the phosphorus concentration in the vicinity of the site within one cycle, or the coagulant injection amount may not be determined separately considering only the variation of the coagulant efficiency near the site.

In the conventional method of determining the coagulant injection rate by the change of the flocculant efficiency, the concentration of phosphorus is measured. However, it is not intended to determine the coagulant injection rate in the field according to the variation of the phosphorus concentration, It is nothing but for. Even if we try to determine the amount of coagulant injected according to the variation of the phosphorus concentration here, since the determination period of the coagulant is determined based on the phosphorus concentration of the past inflow source past the site a long time ago, The coagulant can not be injected into the field according to the measured value, and the coagulant can not be injected into the field. Here, the phosphorus concentration is a raw water which is far away from the site according to the phosphorus concentration measurement value of the influent source and the phosphorus concentration measurement value of the flocculation sample, but the efficiency of the coagulant of such raw water is determined and is applied to the field .

In addition, even if the coagulant injection rate is determined by applying such coagulant efficiency, it is necessary to know the actual value of phosphorus concentration at the site to be applied, but since it is unknown, an approximate value with small error should be obtained. Conventionally, an approximate value is obtained by using a prediction method. However, a predicted value based on measurement values having a long measurement period must be an approximate value with a large error from the actual value. Therefore, even if an attempt is made to determine the coagulant injection rate by applying the coagulant efficiency, a problem arises because the predicted value to be used has a large error. That is, conventionally, the time required for measuring the flocculant efficiency by the jatting method is considerably long, and the predicted value of the concentration for determining the coagulant injection rate, You can not help but find out by using past phosphorus measurements that passed the site a long time ago. Nevertheless, in order to obtain a predicted value, a method of predicting using three phosphorus concentration values measured at intervals of 15 minutes in the past is used as it is, so that a problem also occurs. Even if the method of predicting using three phosphorus concentration values measured at intervals of 15 minutes can be applied equally to the past three phosphorus concentration values measured at such a period (at least 30 minutes or more) Compared with the actual value, the predicted value will be very large when the positive error (when the predicted value is larger than the actual value) or the negative error (when the predicted value is smaller than the actual value) There is only one problem.

In order to solve this problem, in the present invention, although the phosphorus concentration value of the water passing through the site where the coagulant is injected can not be known, the nearer the site is, the more the actual water quality (phosphorus concentration and flocculant efficiency, etc.) Therefore, it is an object of the present invention to provide a pretreatment system and method for measuring the water quality close to the site as much as possible and to determine the concentration of phosphorus before the flocculation test and the phosphorus concentration after the flocculation experiment, and a flocculant optimum control system and method using the same.

In the present invention, the concentration of phosphorus in the sample is measured, the sample is concentrated, the concentration of the pollutant in the coagulated sample is measured, and the time taken for washing is minimized, that is, The influent water nearer to the site is sampled from the influent water that passes through the site before the influent passing through the site at the time (when the phosphorus concentration measurement value is obtained, it has already passed the site), the phosphorus concentration before and after the coagulation experiment is measured in real time, The present invention also provides a pretreatment system and method for use at the time of injection at a site concentration and a site coagulant efficiency, and an optimal flocculant control system and method using the same.

In the present invention, it is possible to minimize the error between the actual concentration in the field and the concentration of the measured phosphorus, to eliminate the influence of the error on the site, and to reduce the error between the actual flocculant efficiency on- The present invention not only shortens the time of one cycle such that recent measurements of phosphorus concentration are approximations that are less error-free than the actual values of the site, The present invention also provides a pretreatment system and method capable of measuring the phosphorus concentration after the aggregation experiment necessary for the calculation of the flocculant efficiency even in the measurement period of the phosphorus concentration. In addition, this preprocessing system is used to control the amount of flocculant injected twice in one cycle, And to provide an optimal control system and method capable of optimizing the injection amount. That is, it is possible to determine the coagulant injection rate to be firstly injected into the site according to the phosphorus concentration measured in one cycle section and to determine the coagulant injection rate to be injected into the site on the second occasion according to the calculated efficiency of the coagulant, The amount of injected coagulant can be optimized in real time.

Since one cycle of the present invention is repeated several times at a given time compared to a conventional long cycle, the interval of the coagulant injection time is further shortened, so that the negative error and the measured value when the measured value is smaller than the actual value in each shortened cycle Processing system and method that can be used in an optimal control system that can cancel each other even if a positive error occurs in a case where the positive error is greater than a predetermined value.

The present invention also relates to a method of filtering a sample of a high concentration before an aggregation experiment and a sample of a low concentration after an aggregation experiment so that the sample can be filtered and then measured in the same single tank, A pretreatment system and method for cleaning a filter, and an optimum flocculant control system and method using the same.

In addition, the present invention adopts a filter which is installed in an inclined or horizontal direction, or in which a sample is upwardly filtered under the filter, so that the substantial area contributing to filtration in the filter is made larger than the side filtration method in which the filter is installed vertically It is an object of the present invention to provide a pretreatment system and method capable of further reducing filtration time and washing time.

In addition, the present invention not only ensures the accuracy of measurement by washing the inside of the water tank and the filter which contain different samples while reducing the cycle time, but also ensures that the influence of each water tank There is a need to provide a pretreatment system capable of shortening cleaning and processing time.

It is also an object of the present invention to provide a pretreatment system and method capable of cleaning filtration tanks (inflow filtration tanks, inflow tanks and filtration tanks) during flocculation experiments in a jatester tank.

It is another object of the present invention to provide a pretreatment system and method capable of washing a jatester tank during filtration of a sample after agglutination test.

It is another object of the present invention to provide a pretreatment system and method for pretreating a sample after an agglomeration experiment in a single cycle for a period of time for measuring a phosphorus concentration of a sample before an agglutination experiment.

In addition, while the present invention is capable of filtering and washing the sample before the flocculation experiment and then washing the sample after the flocculation experiment, the phosphorus concentration of the sample before the flocculation experiment is measured in one measuring device separately from the filtration, It is an object of the present invention to provide a pretreatment system and method capable of shortening a pretreatment time by allowing phosphorus concentration to be measured after a test.

The 1 cycle section of the present invention is determined based on the time taken for the filtered sample to be collected from the measuring device to collect in the filtration tank, the time taken to measure the phosphorus concentration of the raw water sample, and the time taken to measure the phosphorus concentration of the flocculation sample And an object of the present invention is to provide a pre-processing system and method.

Further, the present invention can be installed detachably so that the filter can be replaced periodically, or the present invention uses a method of backwashing at the outlet of the filter in order to remove suspended matters or the like stuck in the filter for smooth filtration It is not easy to remove floating substances by backwashing when a mesh of a filter having a small pore size (for example, 100 占 퐉) is used), but the floating matters remaining in the filter at the inlet side of the filter, microbe fouling, And the like. The object of the present invention is to provide a pretreatment system that cleans the nozzle (injection), cleans air bubbles, or cleans by using an ultrasonic vibrator.

The present invention is characterized in that prior sampling samples are agglomerated and new samples are performed before the concentration of contaminants in the agglomerated sample is finished, that is, each cycle section is overlapped, so that the sampling interval is further reduced, Therefore, the present invention is intended to measure the concentration of the sample before the flocculation experiment and the concentration of the flocculation experiment after sampling the influent water, which is closer to the site, than the influent water passing through the site at the time of injection, And a system and a method for calculating the concentration of the contaminants at the time of injection and the efficiency of the flocculant by calculating the flocculant efficiency.

The present invention is used to determine the coagulant efficiency of raw water by using the measured concentration of phosphate before coagulation experiment and the measured concentration of phosphate after coagulation experiment provided within one cycle. That is, the flocculant efficiency is a value obtained by subtracting the measured concentration of phosphate after the flocculation test at the measured concentration of phosphate before the flocculation experiment, by the amount of flocculant injected at the flocculation (efficiency, injection rate, and injection amount are calculated per unit volume can do}. That is, the coagulant efficiency (per unit volume) can be determined by the amount of coagulant injected per unit volume injected into the coagulant jatester tank (concentration after concentration test - concentration test after coagulation test). The coagulant injection rate to be injected into the site is the value obtained by subtracting the target value of phosphorus contained in the effluent from the phosphorus concentration of the site (which is the recently measured or calculated phosphorus concentration) divided by the coagulant efficiency during the field injection. That is, the on-site coagulant injection rate is (recent pollutant concentration-target value) / recent flocculant efficiency. Each time the pollutant concentration is newly measured in a cycle or the coagulant efficiency is newly calculated, the field coagulant injection rate (here, the coagulant injection rate (ppm) and the sewage inflow amount (L / min) ≪ RTI ID = 0.0 > and / or < / RTI >

In order to cope with changes in the influent water quality, the present invention measures the concentration of phosphorus (phosphate) in real time in one cycle and measures the coagulant efficiency in real time to simultaneously cope with the changed phosphorus concentration and the changed coagulant efficiency In addition, the measurement and treatment are performed so that the time of one cycle is shortened to substantially reduce the amount of the coagulant used for removing phosphorus contained in the wastewater, and to stabilize the discharged water quality more stably (Input amount) of the coagulant to maintain the amount of the coagulant to be within a predetermined range (e.g.

The present invention provides a system and method for stably reducing phosphorus concentration of discharged water by injecting an optimum flocculant to a site irrespective of whether the concentration of phosphate and the influencing factor is changed or is changed at the same time .

In addition, the present invention not only calculates the amount of the flocculant to be injected into the site after the phosphorus concentration is measured in one cycle (cycle), but also calculates the amount of the flocculant to be injected into the site even after the efficiency of the flocculant is calculated A system and a method for injecting coagulant into the field twice in one cycle.

In addition, the present invention provides a system and method that operate in a series of cycles, in which the amount of the flocculant to be injected into the site is measured after the phosphate concentration is measured in one cycle at a certain interval, And a cycle for injecting the flocculant into the field twice in one cycle by calculating a new amount of the flocculant to be added.

In addition, the present invention measures the phosphorus concentration for the first influent in one cycle and determines the concentration of phosphorus in the same or substantially the same influent as the first influent (the influent whose substantive difference from the first influent is not the same as the first influent And determining the amount of coagulant injected at the site by calculating the coagulant efficiency after measuring the concentration of the coagulant after the coagulation test.

It is another object of the present invention to provide a system and method for determining the optimal amount of coagulant injected into a site by measuring the phosphorus concentration for the first influent water in one cycle and calculating the coagulant efficiency for the second influent water have.

The present invention also provides a system and method for determining the optimum amount of coagulant injected into the site after the completion of one cycle (immediately after or after a predetermined time has elapsed) or before the end of the next cycle .

It is another object of the present invention to provide a system and method for determining an optimum amount of coagulant injected into a field, which is characterized in that a third cycle is performed before or after one cycle is completed.

The present invention also relates to a process for the determination of the concentration of phosphorus in an influent by measuring the concentration of phosphorus in the influent, calculating the flocculant efficiency for the influent or substantially the same influent, and further measuring the concentration of phosphorus in the separate influent And to provide a system and method for determining the optimum amount of coagulant injected into a site.

The present invention also relates to a process for the determination of the concentration of phosphorus in a first influent, measuring the concentration of phosphorus in the first influent, calculating the coagulant efficiency for the second influent, and further measuring the concentration of phosphorus in the third influent And to provide a system and method for determining the optimum amount of coagulant injected into a site.

In order to measure the phosphorus concentration of the sample after the filtration and washing of the first influent water and the measurement of the influent water substantially coincide with the first influent or the first influent, the filtration tank A filtration tank, or an inflow water tank and a filtration water tank).

In order to measure the phosphorus concentration of the sample after the flocculation experiment of the influent water which is substantially the same as the first influent water or the first influent water even before filtration and washing are completed in the first filtration tank for the first influent water, (Using two filtration tanks).

In addition, the present invention is characterized in that the measurement of the phosphate after the coagulation test in one cycle is carried out before the measurement of the phosphate before the coagulation test (in the case of two measuring instruments), immediately after the completion of the measurement, And a system and a method for determining an optimal amount of the coagulant injected into the site.

Further, the present invention is characterized in that even when filtration and washing by the first filtration tank with respect to the first influent water is not completed, the influent water which is substantially the same as the first influent water or the first influent water (the influent water immediately after the sample of the first influent water is filled, The present invention also provides a system and a method for transferring phosphate concentration of a sample to a second filtration tank (using two filtration vessels and two measuring vessels) for measurement by a second measuring device after the coagulation test.

It is another object of the present invention to provide a system and a method that can further reduce the time of one cycle by using two or more filtration vessels or two or more vessels.

In order to accomplish the above object, the present invention provides a system for pretreating sampling raw water of an incoming wastewater, comprising: a jay tester tank containing a sample of raw water to be introduced and performing a coagulation test on the sample; A water tank for receiving the sample of the raw water to be introduced and the sample of the jatester tank, respectively, and the filter below the filter to be filtered; A transfer tube for transferring the sample of the coagulation experiment of the jatester tank to the water tank for filtration; A meter for measuring the quality of the filtered sample; A washing section for washing the water tank and the jaster trough; And a discharge pipe for discharging the sample and washing water contained in the water tank and the jay tester tank; And a sample to be filtered is provided under the filter.

The present invention also relates to a system for pretreating sampling raw water of an incoming wastewater, comprising: a jitter tester for containing a sample of raw water to be introduced and performing a coagulation test on the sample; A water tank for receiving the sample of the raw water to be introduced and the sample of the jatester tank, respectively, and the filter below the filter to be filtered; A transfer tube for transferring the sample of the coagulation experiment of the jatester tank to the water tank for filtration; A meter for measuring the quality of the filtered sample; A washing section for washing the water tank and the jaster trough; And a discharge pipe for discharging the sample and washing water contained in the water tank and the jay tester tank; Wherein the filter is installed at a position higher than the bottom of the water tank, and a sample for filtering is provided below the filter.

A system for pretreating sampling raw water of an incoming wastewater, comprising: a jitter tester for holding a sample of raw water to be introduced and for performing a coagulation test on the sample; An influent filtrate tank for receiving the sample of raw water to be introduced and the sample of the jatester tank, respectively, and having the filter to filter the sample under the filter; A transfer tube for transferring the sample of the coagulation test of the jatester tank to the inflow filtrate tank for filtration; A meter for measuring the quality of the filtered sample; A washing unit for washing the inflow filtration water tank and the jaster trough; And a discharge pipe for discharging the sample and washing water contained in the inflow filtration water tank and the jay tester tank; Wherein the inlet of the jatheater side transfer pipe is disposed at a position higher than the outlet of the transfer pipe located below the filter, and a sample for filtration is provided below the filter.

The present invention also relates to a system for pretreating sampling raw water of an incoming wastewater, comprising: a jitter tester for containing a sample of raw water to be introduced and performing a coagulation test on the sample; An influent filtrate tank for receiving the sample of raw water to be introduced and the sample of the jatester tank, respectively, and having the filter to filter the sample under the filter; A transfer tube for transferring the sample of the coagulation test of the jatester tank to the inflow filtrate tank for filtration; A meter for measuring the quality of the filtered sample; A washing unit for washing the inflow filtration water tank and the jaster trough; And a discharge pipe for discharging the sample and washing water contained in the inflow filtration water tank and the jay tester tank; The inlet of the jatheter side transfer pipe is disposed at a position higher than the bottom of the jatester tank and the inlet of the jatheater side transfer pipe is disposed at a position higher than the outlet of the transfer pipe located below the filter, Wherein the filter is provided under the filter.

The present invention also relates to a system for pretreating sampling raw water of an incoming wastewater, comprising: a jitter tester for containing a sample of raw water to be introduced and performing a coagulation test on the sample; An influent filtrate tank for receiving the sample of raw water to be introduced and the sample of the jatester tank, respectively, and having the filter to filter the sample under the filter; A transfer tube for transferring the sample of the coagulation test of the jatester tank to the inflow filtrate tank for filtration; A meter for measuring the quality of the filtered sample; A washing unit for washing the inflow filtration water tank and the jaster trough; And a discharge pipe for discharging the sample and washing water contained in the inflow filtration water tank and the jay tester tank; The inlet of the jatheater side transfer pipe is disposed at a position higher than the outlet of the transfer pipe located below the filter and the filter is installed at a position higher than the bottom of the inflow filtrate water tank, Processing system according to the present invention.

In addition, the present invention provides a system for pretreating sampling raw water of incoming wastewater, comprising: an inflow water tank into which a sample of raw water flows; A jitter tester for holding a sample of the incoming raw water and performing a coagulation test on the sample; A filtering water tank for receiving the sample of the influent water tank and the sample of the jatester tank, respectively, and having the filter so that the sample under the filter is filtered; A transfer tube for transferring the sample subjected to the flocculation test of the jatester tank to the inflow water tank or the filtrate water tank; A meter for measuring the quality of the filtered sample; A washing unit for washing the inflow water tank, the filtration water tank, and the jay tester tank; And a discharge pipe for discharging a sample contained in the inflow water tank, the filtration water tank, the jatester tank, and the washing water.

In addition, the present invention provides a system for pretreating sampling raw water of incoming wastewater, comprising: an inflow water tank into which a sample of raw water flows; A jitter tester for holding a sample of the incoming raw water and performing a coagulation test on the sample; A filtering water tank for receiving the sample of the influent water tank and the sample of the jatester tank, respectively, and having the filter so that the sample under the filter is filtered; A transfer tube for transferring the sample subjected to the flocculation test of the jatester tank to the inflow water tank or the filtrate water tank; A meter for measuring the quality of the filtered sample; A washing unit for washing the inflow water tank, the filtration water tank, and the jay tester tank; And a discharge pipe for discharging a sample contained in the inflow water tank, the filtration water tank, the jam tester tank, and the washing water; Wherein the inlet of the jatheater side transfer pipe is disposed at a position higher than the outlet of the transfer pipe and the bottom of the inlet water tank containing the sample is disposed at a position higher than the bottom of the bottom of the filtration water tank containing the sample, And is provided under the filter.

In addition, the present invention provides a system for pretreating sampling raw water of incoming wastewater, comprising: an inflow water tank into which a sample of raw water flows; A filtering water tank for receiving the sample of the influent water tank and the sample of the jatester tank, respectively, and having the filter so that the sample under the filter is filtered; A jitter tester for holding a sample of the incoming raw water and performing a coagulation test on the sample; A transfer tube for transferring the sample of the coagulation test of the jatester tank to the filtrate tank; A meter for measuring the quality of the filtered sample; A washing unit for washing the inflow water tank, the filtration water tank, and the jay tester tank; And a discharge pipe for discharging a sample contained in the inflow water tank, the filtration water tank, the jam tester tank, and the washing water; The inlet of the jatheater side transfer pipe is disposed at a position higher than the outlet of the transfer pipe on the side of the filtration water tank, the bottom of the inlet water tank containing the sample of the inflow water tank is disposed at a position higher than the bottom of the bottom of the filtration water tank, Is provided under the filter. ≪ IMAGE >

In addition, the present invention provides a system for pretreating sampling raw water of incoming wastewater, comprising: an inflow water tank into which a sample of raw water flows; A filtering water tank for receiving the sample of the influent water tank and the sample of the jatester tank, respectively, and having the filter so that the sample under the filter is filtered; A jitter tester for holding a sample of the incoming raw water and performing a coagulation test on the sample; A transfer tube for transferring the sample of the coagulation test of the jatester tank to the filtrate tank; A meter for measuring the quality of the filtered sample; A washing unit for washing the inflow water tank, the filtration water tank, and the jay tester tank; And a discharge pipe for discharging a sample contained in the inflow water tank, the filtration water tank, the jam tester tank, and the washing water; The entrance of the jatheater side transfer pipe is disposed at a position higher than the outlet of the transfer pipe on the side of the filtration water tank and the bottom of the inlet water tank containing the sample of the inflow water tank is disposed at a position higher than the bottom of the bottom of the filtration water tank, Is provided at a position higher than the bottom of the filtration water tank, and a sample for filtration is provided below the filter.

In addition, the present invention provides a system for pretreating sampling raw water of incoming wastewater, comprising: an inflow water tank into which a sample of raw water flows; A filtering water tank for receiving the sample of the influent water tank and the sample of the jatestor tank, respectively, and having the filter so that the samples under the filter are respectively filtered; A jitter tester for holding a sample of the incoming raw water and performing a coagulation test on the sample; A transfer tube for transferring the sample of the coagulation experiment of the jatester tank to the inflow water tank; A meter for measuring the quality of the filtered sample; A washing unit for washing the inflow water tank, the filtration water tank, and the jay tester tank; And a discharge pipe for discharging a sample contained in the inflow water tank, the filtration water tank, the jam tester tank, and the washing water; The inlet of the jatheater side transfer pipe is disposed at a position higher than the outlet of the transfer pipe at the inlet water tank and the bottom of the inlet water tank containing the sample of the influent water tank is disposed at a position higher than the bottom of the bottom of the filtration water tank, Is provided under the filter. ≪ IMAGE >

In addition, the present invention provides a system for pretreating sampling raw water of incoming wastewater, comprising: an inflow water tank into which a sample of raw water flows; A filtering water tank for receiving the sample of the influent water tank and the sample of the jatestor tank, respectively, and having the filter so that the samples under the filter are respectively filtered; A jitter tester for holding a sample of the incoming raw water and performing a coagulation test on the sample; A transfer tube for transferring the sample of the coagulation experiment of the jatester tank to the inflow water tank; A meter for measuring the quality of the filtered sample; A washing unit for washing the inflow water tank, the filtration water tank, and the jay tester tank; And a discharge pipe for discharging a sample contained in the inflow water tank, the filtration water tank, the jam tester tank, and the washing water; The inlet of the jatheater side transfer pipe is disposed at a position higher than the outlet of the transfer pipe at the inlet side of the inflow water tank and the bottom of the inflow water tank containing the sample of the inflow water tank is disposed at a position higher than the bottom of the bottom of the filtration water tank, Is provided at a position higher than the bottom of the filtration water tank, and a sample for filtration is provided below the filter.

In addition, the present invention provides a system for pretreating sampling raw water of incoming wastewater, comprising: an inflow water tank into which a sample of raw water flows; A filtering water tank for receiving the sample of the influent water tank and the sample of the jatestor tank, respectively, and having the filter so that the samples under the filter are respectively filtered; A supply pipe for supplying a sample of the influent water tank to the filtrate tank; A jitter tester for holding a sample of the incoming raw water and performing a coagulation test on the sample; A transfer tube for transferring the sample of the coagulation test of the jatester tank to the filtration water tank or the inflow water tank; A meter for measuring the quality of the filtered sample; A washing unit for washing the inflow water tank, the filtration water tank, and the jay tester tank; An inlet water tank, a filtration water tank, a sample contained in the jatester tank, and a discharge pipe for discharging wash water; And a sample to be filtered is provided under the filter.

In addition, the present invention provides a system for pretreating sampling raw water of incoming wastewater, comprising: an inflow water tank into which a sample of raw water flows; A jitter tester for holding a sample of the incoming raw water and performing a coagulation test on the sample; A filtering water tank for receiving the sample of the influent water tank and the sample of the jatestor tank, respectively, and having the filter so that the samples under the filter are respectively filtered; A transfer tube for transferring the sample of the coagulation experiment of the jatester tank to the inflow water tank; A supply pipe for supplying the sample of the influent water tank and the sample of the jatestor tank transferred to the filtered water tank; A meter for measuring the quality of the filtered sample; A washing unit for washing the inflow water tank, the filtration water tank, and the jay tester tank; An inlet water tank, a filtration water tank, a sample contained in the jatester tank, and a discharge pipe for discharging wash water; The entrance of the jatheater side transfer pipe is disposed at a position higher than the outlet of the transfer pipe connected to the inflow water tank and the inlet of the inflow water tank side supply pipe is disposed at a position higher than the outlet of the filtration water tank side supply pipe, Wherein the bottom of the filter is disposed at a position higher than the bottom of the bottom of the filtration tank, and a sample for filtration is provided under the filter.

In addition, the present invention provides a system for pretreating sampling raw water of incoming wastewater, comprising: an inflow water tank into which a sample of raw water flows; A jitter tester for holding a sample of the incoming raw water and performing a coagulation test on the sample; A filtering water tank for receiving the sample of the influent water tank and the sample of the jatestor tank, respectively, and having the filter so that the samples under the filter are respectively filtered; A supply pipe for supplying the sample of the influent water tank to the filtering water tank; A transfer tube for transferring the sample of the coagulation test of the jatester tank to the filtrate tank; A meter for measuring the quality of the filtered sample; A washing unit for washing the inflow water tank, the filtration water tank, and the jay tester tank; An inlet water tank, a filtration water tank, a sample contained in the jatester tank, and a discharge pipe for discharging wash water; The entrance of the jatheater side transfer pipe is disposed at a position higher than the outlet of the transfer pipe connected to the filtration water tank side, the inlet of the inflow water tank side supply pipe is disposed at a position higher than the outlet of the filtration water tank side supply pipe, Characterized in that the filter is arranged at a position higher than the bottom of the filtration water tank and a sample for filtration is provided below the filter. .

In addition, the present invention provides a system for pretreating sampling raw water of incoming wastewater, comprising: an inflow water tank into which a sample of raw water flows; A jitter tester for holding a sample of the incoming raw water and performing a coagulation test on the sample; A filtering water tank for receiving the sample of the influent water tank and the sample of the jatester tank, respectively, and having the filter so that the sample under the filter is filtered; A supply pipe for supplying a sample of the influent water tank to the filtrate tank; A transfer tube for transferring the sample of the coagulation test of the jatester tank to the filtration water tank or the inflow water tank; A meter for measuring the quality of the filtered sample; A washing unit for washing the inflow water tank, the filtration water tank, and the jay tester tank; An inlet water tank, a filtration water tank, a sample contained in the jatester tank, and a discharge pipe for discharging wash water; Wherein the inlet of the jatheater side transfer pipe is disposed at a position higher than the outlet of the transfer pipe and the inlet of the inflow water tank side supply pipe is disposed at a position higher than the outlet of the filtration water tank side supply pipe, Or the inlet of the inflow water tank side supply pipe is disposed at a position higher than a position where the filter is installed, and a sample for filtration is provided below the filter.

In addition, the present invention provides a system for pretreating sampling raw water of incoming wastewater, comprising: an inflow water tank into which a sample of raw water flows; A jitter tester for holding a sample of the incoming raw water and performing a coagulation test on the sample; A filtering water tank for receiving the sample of the influent water tank and the sample of the jatester tank, respectively, and having the filter so that the sample under the filter is filtered; A supply pipe for supplying a sample of the influent water tank to the filtrate tank; A transfer tube for transferring the sample of the coagulation test of the jatester tank to the filtrate tank; A meter for measuring the quality of the filtered sample; A washing unit for washing the inflow water tank, the filtration water tank, and the jay tester tank; An inlet water tank, a filtration water tank, a sample contained in the jatester tank, and a discharge pipe for discharging wash water; The inlet of the jatheater side feed pipe is disposed at a position higher than the outlet of the feed pipe on the side of the filtration water tank and the inlet of the feed pipe side is disposed at a position higher than the outlet of the feed pipe on the side of the filtration water tank, Wherein the inlet of the tube or the inlet of the inlet tube is disposed at a position higher than a position where the filter is installed, and a sample for filtering is provided below the filter.

In addition, the present invention provides a system for pretreating sampling raw water of incoming wastewater, comprising: an inflow water tank into which a sample of raw water flows; A jitter tester for holding a sample of the incoming raw water and performing a coagulation test on the sample; A filtering water tank for receiving the sample of the influent water tank and the sample of the jatester tank, respectively, and having the filter so that the sample under the filter is filtered; A feed pipe for feeding the sample of the influent water tank and the sample of the jatester tank to the filtrate tank; A transfer tube for transferring the sample of the coagulation experiment of the jatester tank to the inflow water tank; A meter for measuring the quality of the filtered sample; A washing unit for washing the inflow water tank, the filtration water tank, and the jay tester tank; An inlet water tank, a filtration water tank, a sample contained in the jatester tank, and a discharge pipe for discharging wash water; The entrance of the jatheater side transfer pipe is disposed at a position higher than the outlet of the transfer pipe connected to the inflow water tank, the inlet of the inflow water tank side supply pipe is disposed at a position higher than the outlet of the filtration water tank side supply pipe, Wherein the inlet of the tube or the inlet of the inlet tube is disposed at a position higher than a position where the filter is installed, and a sample for filtering is provided below the filter.

According to another aspect of the present invention, there is provided a method of sampling input raw water by intervals and pre-treating the raw water, comprising the steps of: sampling raw water to be introduced and providing the filtered raw water to a filter tank and a jay tester tank; Filtering the raw water sample of the filtration tank and performing coagulation test on the raw water sample of the jatester tank; Washing the filtration tank during the measurement of the phosphorus concentration of the filtered raw water sample, filtering the coagulation sample after completion of washing of the filtration tank, and washing the jasmine tank after the transfer is completed; Washing the filtration tank while measuring the phosphorus concentration of the filtered raw water sample, measuring the phosphorus concentration of the filtered coagulation sample, and sampling the incoming raw water after the washing of the filtration tank is finished; And a step of finishing the measurement of the phosphorus concentration of the filtered aggregated sample.

In addition, the present invention provides a method of sampling and pre-treating raw water to be introduced, comprising the steps of: sampling raw water to be introduced and supplying the sampled raw water to a filter tank and a jay tester tank; Filtering the raw water sample of the filtration tank and performing coagulation test on the raw water sample of the jatester tank; Washing the filtration tank during the measurement of the phosphorus concentration of the filtered raw water sample, filtering the coagulation sample after completion of washing of the filtration tank, and washing the jasmine tank after the transfer is completed; Washing the filtration tank while measuring the phosphorus concentration of the filtered raw water sample, measuring the phosphorus concentration of the filtered coagulation sample, and sampling the incoming raw water after the washing of the filtration tank is finished; And a step of finishing the measurement of the phosphorus concentration of the filtered aggregated sample.

According to another aspect of the present invention, there is provided a method of sampling input raw water by intervals and pre-processing the sampled raw water. Filtering the sampled raw water sample in a filtration tank, and performing flocculation experiment in a jatester tank; The filtration tank is washed while the phosphorus concentration of the filtered raw water sample is measured. When washing of the filtration tank is finished, the coagulation sample, which has undergone the coagulation test, is conveyed through the inlet of the conveyance pipe arranged above the bottom of the jatester tank, To the outlet of the conveying line disposed at a position lower than the inlet of the jittering tank, and washing the jaster blaster tank after the conveyance is completed; Washing the filtration tank while measuring the phosphorus concentration of the filtered raw water sample, measuring the phosphorus concentration of the filtered coagulation sample, and sampling the incoming raw water after the washing of the filtration tank is finished; And a step of finishing the measurement of the phosphorus concentration of the filtered aggregated sample.

According to another aspect of the present invention, there is provided a method of sampling input raw water by intervals and pre-processing the sampled raw water. Filtering the sampled raw water sample in a filtration tank, and performing flocculation experiment in a jatester tank; The filtration tank is washed while the phosphorus concentration of the filtered raw water sample is measured. When washing of the filtration tank is finished, the coagulation sample, which has undergone the coagulation test, is conveyed through the inlet of the conveyance pipe arranged above the bottom of the jatester tank, To the outlet of the conveying line disposed at a position lower than the inlet of the jittering tank, and washing the jaster blaster tank after the conveyance is completed; Washing the filtration tank while measuring the phosphorus concentration of the filtered raw water sample and measuring the phosphorus concentration of the filtered coagulation sample; And a step of finishing the measurement of the phosphorus concentration of the filtered aggregated sample.

According to another aspect of the present invention, there is provided a method of sampling input raw water by intervals and pre-treating the raw water, comprising the steps of: sampling raw water to be introduced and providing the filtered raw water to a filter tank and a jay tester tank; Filtering the raw water sample by a filter installed obliquely or horizontally in the filtration tank and performing coagulation test on the raw water sample of the jatester tank; The filtration tank is washed while the phosphorus concentration of the filtered raw water sample is measured. When washing of the filtration tank is completed, the coagulation sample having been subjected to the coagulation test is transferred and filtered by the filter, and the jaster tester tank is washed after the transfer is completed step; Washing the filtration tank while measuring the phosphorus concentration of the filtered raw water sample, measuring the phosphorus concentration of the filtered coagulation sample, and sampling the incoming raw water after the washing of the filtration tank is finished; And a step of finishing the measurement of the phosphorus concentration of the filtered aggregated sample.

According to another aspect of the present invention, there is provided a pretreatment method for sampling incoming raw water by intervals, comprising the steps of: sampling the incoming raw water and providing it under a filter of a jat tester tank and a filtration tank; Filtering the influent raw water sample in a filter of the filtration tank, and performing coagulation test in the jatester tank; Measuring the phosphorus concentration of the filtered raw water sample in the measuring instrument; Washing the filtration tank while measuring the phosphorus concentration of the filtered raw water sample; After the washing of the filtration tank is finished, the coagulation sample having been subjected to the coagulation test is transferred to the outlet of the filtration tank-side transfer pipe disposed at a position lower than the entrance of the transfer pipe through the inlet of the transfer pipe at the side of the ja- tester, ; Filtering the transferred coagulated sample in a filter, and washing the jaster trough when the transfer is completed; Completing the measurement of the phosphorus concentration of the filtered raw water sample and measuring the phosphorus concentration of the filtered aggregated sample; Washing the filtration tank while measuring the phosphorus concentration of the filtered flocculation sample; And a step of finishing the measurement of the phosphorus concentration of the filtered aggregated sample.

According to another aspect of the present invention, there is provided a pretreatment method for sampling incoming raw water by intervals, comprising the steps of: sampling the incoming raw water and providing it under a filter of a jat tester tank and a filtration tank; Filtering the influent raw water sample in a filter of the filtration tank, and performing coagulation test in the jatester tank; Measuring the phosphorus concentration of the filtered raw water sample in the measuring instrument; Washing the filtration tank while measuring the phosphorus concentration of the filtered raw water sample; After the washing of the filtration tank is finished, the coagulation sample having been subjected to the coagulation test is transferred to the outlet of the filtration tank-side transfer pipe disposed at a position lower than the entrance of the transfer pipe through the inlet of the transfer pipe at the side of the ja- tester, ; Filtering the transferred coagulated sample in a filter, and washing the jaster trough when the transfer is completed; Completing the measurement of the phosphorus concentration of the filtered raw water sample and measuring the phosphorus concentration of the filtered aggregated sample; Washing the filtration tank while measuring the phosphorus concentration of the filtered flocculation sample; The pretreatment step including the step of completing the measurement of the phosphorus concentration of the filtered aggregated sample is performed by filtering the sampled raw water sample, measuring the phosphorus concentration of the filtered raw water sample, measuring the time taken to measure the phosphorus concentration of the filtered aggregated sample Wherein the pre-treatment is performed during the pre-treatment.

According to another aspect of the present invention, there is provided a pretreatment method for sampling incoming raw water by intervals, comprising the steps of: sampling the incoming raw water and providing it under a filter of a jat tester tank and a filtration tank; Filtering the influent raw water sample in a filter of the filtration tank, and performing coagulation test in the jatester tank; Measuring the phosphorus concentration of the filtered raw water sample in the measuring instrument; Washing the filtration tank while measuring the phosphorus concentration of the filtered raw water sample; After the washing of the filtration tank is finished, the coagulation sample having been subjected to the coagulation test is transferred to the outlet of the filtration tank-side transfer pipe disposed at a position lower than the entrance of the transfer pipe through the inlet of the transfer pipe at the side of the ja- tester, ; Filtering the transferred coagulated sample in a filter, and washing the jaster trough when the transfer is completed; Completing the measurement of the phosphorus concentration of the filtered raw water sample and measuring the phosphorus concentration of the filtered aggregated sample; Washing the filtration tank while measuring the phosphorus concentration of the filtered flocculation sample; Sampling the incoming raw water when the washing is finished; The pretreatment step including the step of completing the measurement of the phosphorus concentration of the filtered aggregated sample is performed by filtering the sampled raw water sample, measuring the phosphorus concentration of the filtered raw water sample, measuring the time taken to measure the phosphorus concentration of the filtered aggregated sample Wherein the pre-treatment is performed during the pre-treatment.

The present invention relates to a method for pre-processing raw water to be sampled on an interval basis, the method comprising the steps of: sampling raw water to be introduced and providing it to a filter tank and a jay tester tank; Filtering the raw water sample in an inclined or horizontally installed filter of the filtration tank and performing an agglomeration test in the jester tank; Measuring the phosphorus concentration of the filtered raw water sample in the measuring instrument; Washing the filtration tank while measuring the phosphorus concentration of the filtered raw water sample; Transporting the coagulation sample after completion of washing of the filtration tank to the outlet of the filtration tank-side transfer pipe disposed at a lower position than the inlet of the transfer pipe through the entrance of the transfer pipe at the side of the jatester; Filtering the transferred coagulated sample in a filter, and washing the jaster trough when the transfer is completed; Completing the measurement of the phosphorus concentration of the filtered raw water sample and measuring the phosphorus concentration of the filtered aggregated sample; Washing the filtration tank while measuring the phosphorus concentration of the filtered flocculation sample; The pretreatment step including the step of completing the measurement of the phosphorus concentration of the filtered aggregated sample is performed by filtering the sampled raw water sample, measuring the phosphorus concentration of the filtered raw water sample, measuring the time taken to measure the phosphorus concentration of the filtered aggregated sample Wherein the pre-treatment is performed during the pre-treatment.

According to another aspect of the present invention, there is provided a method of sampling input raw water by intervals and pre-treating the raw water, comprising the steps of: sampling raw water to be introduced and providing the filtered raw water to a filter tank and a jay tester tank; Filtering the raw water sample in an inclined or horizontally installed filter of the filtration tank and performing an agglomeration test in the jester tank; Measuring the phosphorus concentration of the filtered raw water sample in the measuring instrument; Washing the filtration tank while measuring the phosphorus concentration of the filtered raw water sample; Transferring the flocculated sample to the outlet of the filtration tank-side transfer pipe disposed at a position lower than the entrance of the transfer pipe through the inlet of the transfer pipe on the jacquester tank side after the flocculation test of the filtration tank is completed; Filtering the transferred coagulated sample in a filter, and washing the jaster trough when the transfer is completed; Completing the measurement of the phosphorus concentration of the filtered raw water sample and measuring the phosphorus concentration of the filtered aggregated sample; Washing the filtration tank while measuring the phosphorus concentration of the filtered flocculation sample; Sampling the incoming raw water when the washing is finished; The pretreatment step including the step of completing the measurement of the phosphorus concentration of the filtered aggregated sample is performed by filtering the sampled raw water sample, measuring the phosphorus concentration of the filtered raw water sample, measuring the time taken to measure the phosphorus concentration of the filtered aggregated sample Wherein the pre-treatment is performed during the pre-treatment.

In addition, the present invention provides a method of sampling and pre-treating raw water to be introduced, comprising the steps of: sampling raw water to be introduced and supplying the sampled raw water to a filter tank and a jay tester tank; Filtering the raw water sample by a filter installed obliquely or horizontally in the filtration tank and performing coagulation test on the raw water sample of the jatester tank; The filtration tank is washed while the phosphorus concentration of the filtered raw water sample is measured. When washing of the filtration tank is completed, the coagulation sample having been subjected to the coagulation test is transferred and filtered by the filter, and the jaster tester tank is washed after the transfer is completed step; Washing the filtration tank while measuring the phosphorus concentration of the filtered raw water sample, measuring the phosphorus concentration of the filtered coagulation sample, and sampling the incoming raw water after the washing of the filtration tank is finished; And a step of finishing the measurement of the phosphorus concentration of the filtered aggregated sample.

According to another aspect of the present invention, there is provided a method of sampling input raw water by intervals and pre-treating the raw water, comprising the steps of: sampling raw water to be introduced and providing the filtered raw water to a filter tank and a jay tester tank; Filtering the raw water sample of the filtration tank and performing coagulation test on the raw water sample of the jatester tank; Washing the filtration tank during the measurement of the phosphorus concentration of the filtered raw water sample, filtering the coagulation sample after completion of washing of the filtration tank, and washing the jasmine tank after the transfer is completed; Washing the filtration tank while measuring the phosphorus concentration of the filtered raw water sample, measuring the phosphorus concentration of the filtered coagulation sample, and sampling the incoming raw water after the washing of the filtration tank is finished; The pretreatment step including the step of completing the measurement of the phosphorus concentration of the filtered aggregated sample is performed by filtering the sampled raw water sample, measuring the phosphorus concentration of the filtered raw water sample, measuring the time taken to measure the phosphorus concentration of the filtered aggregated sample Wherein the pre-treatment is performed during the pre-treatment.

The present invention relates to a method for sampling and preliminarily feeding raw water, comprising the steps of: sampling raw water to be introduced and providing it to a filter tank and a jay tester tank; Filtering the raw water sample of the filtration tank and performing coagulation test on the raw water sample of the jatester tank; Washing the filtration tank during the measurement of the phosphorus concentration of the filtered raw water sample, filtering the coagulation sample after completion of washing of the filtration tank, and washing the jasmine tank after the transfer is completed; Washing the filtration tank while measuring the phosphorus concentration of the filtered raw water sample, measuring the phosphorus concentration of the filtered coagulation sample, and sampling the incoming raw water after the washing of the filtration tank is finished; The pretreatment step including the step of completing the measurement of the phosphorus concentration of the filtered aggregated sample is performed by filtering the sampled raw water sample, measuring the phosphorus concentration of the filtered raw water sample, measuring the time taken to measure the phosphorus concentration of the filtered aggregated sample Wherein the pre-treatment is performed during the pre-treatment.

In addition, the present invention is characterized in that a sample is provided below the filter, that is, at a position lower than the position of the upper end of the filter, before the sample of the raw water contained in each water tank is agglomerated or after the agglomeration test, Are each horizontally or upwardly filtered to measure the phosphorus concentration of each sample.

In the present invention, the bottom of the filter is a position where the sample is filtered before the sample is filtered by the filter installed obliquely or vertically. In the present invention, below the filter is a position where a sample is filtered by a filter (upward filtration) forming a filtration surface that is not vertical. The top of the filter is the position after the sample has been filtered by the filter. When the filter (entire surface) is installed in the vertical direction as a whole (side filtration), the sample below the filter is not subjected to upward filtration and horizontal filtration occurs. If the filter is installed in an inclined or substantially horizontal direction, It is a feature that makes it possible.

Further, in the present invention, a part of the filter is inclined or horizontally installed, and the filter is also characterized by filtering the sample below the filter. That is, even if some of the filtering surfaces of the filter are installed vertically and the remainder are installed obliquely or horizontally, there is a sample to be filtered under the filter and is filtered, so that horizontal filtration is performed at a vertically formed portion of the filter A sample located below the filter installed at a higher, inclined or horizontal position is also up-filtered by the filter. Thus, if the main portion of the filter is a sloped or horizontally installed filter, the sample below the filter is mainly referred to as a filter will be.

Further, in order for the sample under the filter to be filtered, the filter is not limited to be inclined or horizontally installed, but it is also possible to provide a filter formed in various forms such that the sample under the filter can be upwardly filtered have.

Further, the present invention is characterized in that the filter is installed on the bottom of the water tank, the inflow filtration water tank or the filtration water tank, or the filter is installed at a position higher than the bottom of the water tank, the inflow filtration water tank or the filtration water tank.

Further, the present invention is a pretreatment system capable of allowing the inlet of the transfer tube to be disposed at a position higher than the outlet of the transfer tube, and the inlet of the supply tube to be disposed at a position higher than the outlet of the supply tube. For example, the entrance of the jatheater side transfer pipe may be located higher than the outlet of the transfer tank side, the inflow filtration water tank side, the inflow water tank side, or the filtration water tank side transfer pipe, or the inlet of the inflow water tank side supply pipe may be located at the outlet And can be disposed at a higher position.

Further, the present invention is a pretreatment system characterized in that the outlet of the transfer pipe or the supply pipe is below the filter, and the inlet or the outlet of the transfer pipe or the supply pipe is at the bottom position or higher than the floor. For example, the entrance of the jay tester side transfer pipe may be located higher than the bottom of the jay tester tank, or the outlet of the transfer pipe on the side of the water tank may be located higher than the bottom of the water tank, or the outlet of the transfer pipe side of the inflow filtration tank may be Or the outlet of the feed pipe is higher than the bottom of the inflow pipe or the outlet of the feed pipe is located higher than the bottom of the filtering water tank or the inlet of the feed pipe is higher than the bottom of the inflow pipe , And the outlet of the supply pipe may be disposed at a position higher than the bottom of the filtering water tank.

In addition, in the present invention, the position where the inlet or the outlet is higher than the floor includes a jatestaster tank, a water tank, an inflow filtration water tank, an inflow water tank, a side surface of the filtration water tank, and a place located in the inner space.

Further, in the present invention, the position where the inlet is higher than the filter is disposed at a position higher than a position where the inlet is installed with the filter. For example, the inlet of the jatheater side transfer pipe may be disposed at a position higher than the position where the filter is installed, or the inlet of the inflow water tank side supply pipe may be disposed at a position higher than the position where the filter is installed.

Further, the present invention is characterized in that a part of the filtered water tank is opened to the adjacent inflow water tank so that the sample flows downwardly through the filter.

The filtration water tank and the inflow water tank of the present invention may be adjacent to each other and narrow the lower portion of the inflow water tank by widening the lower portion of the filtration water tank below the filter and narrowing the lower portion or widening the lower portion of the inflow water tank.

Further, the present invention is characterized in that the bottom of the sample in which the sample of the inflow water tank is contained is disposed at a position higher than the bottom of the sample in which the sample of the filtration water tank is contained.

In addition, the present invention is characterized in that the bottom of the sample containing the jatester tank is disposed at a position higher than the bottom of the inflow filtration water tank or the sample of the filtration water tank.

In addition, the present invention can reduce the sampling time of the influent raw water instead of measuring the concentration of aggregated phosphorus, omitting the cycle of some intervals for obtaining the flocculant efficiency, The concentration of the first phosphorus and the concentration of the second phosphorus are determined for the raw water sequentially flowing in the zone, and the coagulant injection rate can be determined twice using the previous coagulant efficiency.

In addition, while the present invention is capable of filtering and washing the sample before the flocculation experiment and then washing the sample after the flocculation experiment, the phosphorus concentration of the sample before the flocculation experiment is measured in one measuring device separately from the filtration, It is possible to measure the phosphorus concentration of the sample after the experiment so that the pretreatment time can be shortened.

Also, in the present invention, the pretreatment process or the pre-treatment cycle is performed during the time taken for filtering the sampled raw water sample, measuring the phosphorus concentration of the filtered raw water sample, and measuring the phosphorus concentration of the filtered aggregate sample .

In order to achieve the above object, the present invention provides a system for optimally controlling the amount of coagulant injected using a concentration of a sample before the flocculation experiment and a concentration of the phosphorus after the flocculation experiment of the sampled raw water, A pretreatment unit for measuring the phosphorus concentration after the flocculation agent is injected and the sample is agglutinated; The concentration of the coagulant injected into the field is controlled according to the concentration of the coagulant in the sample and the concentration of the coagulant injected into the field according to the concentration of the coagulant before the coagulation experiment and the concentration of the coagulant after the coagulation experiment And an operation control unit for controlling the amount of the coagulant introduced into the reactor. In the present invention, the injection rate of the coagulant injected into the field is determined not only by the concentration before the coagulation experiment measured before the end of the coagulation experiment of the sample but also by the concentration of the coagulant injected into the site after the coagulation experiment of the sample. It is characterized by being determined.

In addition, the present invention provides a system for optimally controlling the amount of coagulant injected using a concentration of the sample before the flocculation test and a concentration of the phosphor after the flocculation test, A pretreatment unit for injecting the flocculant according to the flocculation rate of the flocculant and measuring the concentration of phosphorus after the flocculation test of the sample; The concentration of the coagulant injected into the field is controlled according to the concentration of the coagulant in the sample and the concentration of the coagulant injected into the field according to the concentration of the coagulant before the coagulation experiment and the concentration of the coagulant after the coagulation experiment And an operation control unit for controlling the amount of the coagulant introduced into the reactor. That is, the present invention is also characterized in that the amount of coagulant injected in the coagulation experiment is determined by the coagulant injection rate with respect to the sample.

In addition, the present invention provides a system for optimally controlling the amount of coagulant injected using a concentration of the sample before the flocculation test and a concentration of the phosphor after the flocculation test, A pretreatment unit for injecting the coagulant into the jatester tank according to the injection rate of the crude jatester coagulant and measuring the concentration of phosphorus after the coagulation experiment of the sample; The coagulant injection rate to be injected into the site is calculated according to the concentration of the coagulation experiment of the sample; Calculating a jatester coagulant loading rate for the sample; And an operation control unit for calculating and controlling the coagulant injection rate to be injected into the site according to the efficiency of the coagulant calculated using the concentration of phosphorus after the coagulation experiment of the jittering tank of the sample. That is, the present invention is characterized by separately calculating the injection rate of the jatester coagulant to the sample.

In addition, the present invention provides a system for optimally controlling the amount of coagulant injected using a concentration of the sample before the flocculation test and a concentration of the phosphor after the flocculation test, A pretreatment unit for injecting the flocculant according to the flocculation rate of the flocculant and measuring the concentration of phosphorus after the flocculation test of the sample; The coagulant injection rate to be injected into the site is calculated according to the concentration of the coagulation experiment of the sample; Calculating a coagulant infusion rate for the sample according to the coagulant infusion rate previously injected into the site; And an operation control unit for calculating and controlling the coagulant injection rate injected into the site according to the coagulant efficiency calculated using the phosphorus concentration after the coagulation test of the sample. That is, in the present invention, the coagulant injection rate previously injected to the site may be the coagulant injection rate just before the site is injected, or may be the coagulant injection rate injected earlier than the site, It is characterized in that it can be calculated based on the coagulant injection rate.

In addition, the present invention provides a system for optimally controlling the amount of coagulant injected using a concentration of the sample before the flocculation test and a concentration of the phosphor after the flocculation test, A pretreatment unit for injecting the flocculant according to the flocculation rate of the flocculant and measuring the concentration of phosphorus after the flocculation test of the sample; The coagulant injection rate to be injected into the site is calculated according to the concentration of the coagulation experiment of the sample; Calculating a coagulant injection rate for the sample according to the coagulant injection rate injected to the site after the previous coagulation experiment; And an operation control unit for calculating and controlling the coagulant injection rate injected into the site according to the coagulant efficiency calculated using the phosphorus concentration after the coagulation test of the sample. That is, in the present invention, the former coagulant injection rate with respect to the sample is characterized by being the coagulant injection rate injected after the recent coagulation experiment.

In addition, the present invention provides a system for optimally controlling the amount of coagulant injected using a concentration of the sample before the flocculation test and a concentration of the phosphor after the flocculation test, A pretreatment unit for injecting the flocculant according to the flocculation rate of the flocculant and measuring the concentration of phosphorus after the flocculation test of the sample; The coagulant injection rate to be injected into the site is calculated according to the concentration of the coagulation experiment of the sample; The coagulant injection rate to the sample is calculated according to the concentration of the coagulant injected into the site according to the concentration of the coagulation experiment of the previous sample; And an operation control unit for calculating and controlling the coagulant injection rate injected into the site according to the coagulant efficiency calculated using the phosphorus concentration after the coagulation test of the sample. That is, in the present invention, the coagulant injection rate before the coagulation test of the previous sample is characterized by being the coagulant injection rate injected into the site before the coagulation test after measuring the phosphorus concentration with respect to the previous sample.

The present invention also relates to a method for measuring the concentration of n-helium in the n-heptane column of each of n samples (n samples: one sample, two samples, n samples, n + In a system for optimally controlling the amount of coagulant injected using concentration after concentration and concentration of phosphorus after coagulation experiment, concentration of each n sample before coagulation experiment is measured, coagulant is injected according to the coagulant injection rate for each n sample, A pretreatment unit for measuring the concentration of phosphorus after the agglutination test; The coagulant injection rate of each n sample was controlled according to the concentration of each n sample, and the coagulant injection rate for each n sample was calculated according to the coagulant injection rate after the coagulation experiment of each (n-1) sample And an arithmetic and control unit for controlling the coagulant injection rate injected into the field according to the coagulant efficiency of each of the n samples calculated using the concentration of the n signal before the coagulation experiment and the concentration of the coagulant after the coagulation experiment of each n sample The amount of the coagulant injected into the reactor is controlled optimally. That is, according to the present invention, not only the coagulant is injected according to the coagulant injection rate for each n sample, but also the coagulant injection rate for each n sample according to the coagulant injection rate injected to the site after the coagulation experiment of each (n-1) Is calculated.

The present invention also relates to a method for measuring the concentration of n-helium in the n-heptane column of each of n samples (n samples: one sample, two samples, n samples, n + In a system for optimally controlling the amount of coagulant injected using concentration after concentration and concentration of phosphorus after coagulation experiment, concentration of each n sample before coagulation experiment is measured, coagulant is injected according to the coagulant injection rate for each n sample, A pretreatment unit for measuring the concentration of phosphorus after the agglutination test; The coagulant injection rate to be injected into the site is calculated according to the concentration of each n sample in the coagulation experiment; Calculating the coagulant injection rate for each n sample according to the coagulant injection rate injected into the site before the coagulation experiment of each (n-1) sample; And an arithmetic and control unit for calculating and controlling the amount of the coagulant injected into the site according to the efficiency of the coagulant of each of the n samples calculated using the phosphorus concentration after the coagulation experiment of each of the n samples, . That is, according to the present invention, not only the coagulant is injected according to the coagulant injection rate for each n sample, but also the coagulant injection rate for each n sample according to the coagulant injection rate before the coagulation experiment of each (n-1) Is calculated.

The present invention also provides a method for optimally controlling the amount of coagulant injected by using the concentration of phosphorus before the coagulation test and the concentration of phosphorus after the coagulation experiment of the n samples sampled from the incoming raw water, {P (n)}; (b) the primary coagulant injection rate {O (n)} injected into the site is calculated according to the concentration {P (n)} before the flocculation experiment; (c) injecting a coagulant and obtaining a phosphorus concentration {P '(n)} after the coagulation experiment with respect to the n sample; (d) calculating the coagulant efficiency {Cp (n)} of the n sample using the concentration {P (n)} before the coagulation experiment and {P '(n)} after the coagulation experiment; (e) the second coagulant injection rate {O '(n)} injected into the site is calculated by the concentration {P (n)} before the coagulation experiment and the coagulant efficiency {Cp Is a method for optimally controlling the amount of the coagulant injected.

The present invention also provides a method for optimally controlling the amount of coagulant injected by using the concentration of phosphorus before the coagulation test and the concentration of phosphorus after the coagulation experiment of the n samples sampled from the incoming raw water, {P (n)}; (b) the primary coagulant injection rate {O (n)} injected into the site is calculated according to the concentration {P (n)} before the flocculation experiment; (c) calculating the coagulant injection rate of the jatester tank to the n samples according to the coagulant injection rate previously injected into the site; (d) injecting coagulant into the jatester tank according to the coagulant injection rate of the jatester tank for n samples and obtaining the phosphorus concentration {P '(n)} after the n-sample flocculation test; (e) the coagulant efficiency {Cp (n)} of the n samples is calculated by the concentration {P (n)} before the coagulation experiment and {P '(n)} after the coagulation experiment; (n)) and the flocculant efficiency (Cp (n)), and (f) the second flocculant injection rate {O ' Is a method for optimally controlling the amount of the coagulant injected.

The present invention also relates to a method and apparatus for collecting n raw samples (each of n samples: one sample, two samples, ..., n samples, (n + 1) In a system for optimally controlling the amount of coagulant injected using concentration after concentration and concentration of phosphorus after coagulation experiment, the concentration {P (n)} before each coagulation experiment of each n sample was measured, and the jatester coagulant injection rate A preprocessing unit for injecting the coagulant according to {Cj (n)} and measuring the phosphorus concentration {P '(n)} after the coagulation experiment of each n sample; The primary coagulant injection rate {O (n)) injected into the field according to the coagulation concentration {P (n)} and the coagulant efficiency {Cp (n-1)} of each n- }; Calculating a jatestor coagulant injection rate {Cj (n)} for each n sample; The coagulant efficiency {Cp (n)} is calculated using the concentration {P (n)} before the coagulation experiment of each n sample and the concentration {P '(n)} after the coagulation experiment of the jatestor tank of each n sample; (N)} injected into the site according to the concentration {P (n)} before coagulation experiment of each n sample and the coagulant efficiency {Cp (n)} of each n sample And a control unit for optimally controlling the amount of the coagulant injected. That is, the present invention is also characterized in that the operation control section calculates the jitter tester coagulant injection rate {Cj (n)} for each n samples.

In the present invention, the jatesthetic coagulant injection rate {Cj (n)} for each of the n samples is calculated in accordance with the secondary coagulant injection rate {O '(n-1)} of each (n-1) It also has features.

In the present invention, the jatesthetic coagulant injection rate {Cj (n)} for each of the n samples is calculated according to the primary coagulant injection rate {O (n-1)} of each .

In the present invention, the coagulant efficiency {Cp (n)} of each of the n samples is calculated by the following formula: [concentration before the coagulation experiment {P (n)} - concentration after the coagulation experiment { And is calculated by the relational expression of the jatester coagulant injection rate {Cj (n)}.

In the present invention, the primary coagulant injection rate {O (n)} of each n sample section is calculated by [the concentration P (n)} - the target value Pt before the coagulation test for each n samples] / angle -1) and the coagulant efficiency {Cp (n-1)} for the sample.

In the present invention, the second on-site coagulant injection rate {O '(n)} of each n sample sections is calculated from the following equation: [concentration P (n) And the flocculant efficiency {Cp (n)} of the flocculant.

Further, the present invention is characterized in that the primary coagulant injection amount {Co (n)} of each n sample section calculated by using the primary coagulant injection rate {O (n)} of each n sample sections is injected into the site; It is also characterized by injecting a second coagulant injection amount {Co '(n)} of each n sample section calculated using the second coagulant injection rate {O' (n)} of each n sample sections.

Also, in the present invention, each of the n samples is characterized by being two samples simultaneously or sequentially sampled in each section.

The present invention also relates to a method and apparatus for collecting n raw samples (each of n samples: one sample, two samples, ..., n samples, (n + 1) In a system for optimally controlling the amount of coagulant injected using concentration after concentration and concentration of phosphorus, concentration of each n sample before coagulation test is measured, coagulant is injected according to the injection rate of jatester coagulant to each n sample A pretreatment unit for measuring the phosphorus concentration after the experiment of agglomeration of each n samples; Control the injection rate of primary coagulant injected into the site according to the concentration of each n sample before coagulation; Calculating the jatester coagulant injection rate for each n sample; The coagulant efficiency is calculated using the concentration of each n sample before the coagulation experiment and the concentration of the coagulation experiment of each j sample of the n samples; And an operation control unit for controlling the injection rate of the secondary coagulant injected into the site according to the efficiency of the coagulant of each of the n samples.

The present invention also relates to a method and apparatus for collecting n raw samples (each of n samples: one sample, two samples, ..., n samples, (n + 1) In a system for optimally controlling the amount of coagulant injected using concentration after concentration and concentration of phosphorus, concentration of each n sample before coagulation test is measured, coagulant is injected according to the injection rate of jatester coagulant to each n sample A pretreatment unit for measuring the phosphorus concentration after the experiment of agglomeration of each n samples; Control the injection rate of primary coagulant injected into the site according to the concentration of each n sample before coagulation; Calculating a jatester coagulant injection rate for each of the n samples according to the coagulant injection rate injected at the site of the previous section of each of the n samples; The coagulant efficiency is calculated using the concentration of each n sample before the coagulation experiment and the concentration of the coagulation experiment of each j sample of the n samples; And an operation control unit for controlling the injection rate of the secondary coagulant injected into the site according to the efficiency of the coagulant of each of the n samples.

The present invention also relates to a method and apparatus for collecting n raw samples (each of n samples: one sample, two samples, ..., n samples, (n + 1) In a system for optimally controlling the amount of coagulant injected using concentration after concentration and concentration of phosphorus after coagulation experiment, the concentration {P (1)} before coagulation experiment of one sample is obtained, The coagulant is injected according to the coagulant injection rate {Cj (1)}, and the concentration {P '(1)} after the coagulation experiment of one sample is obtained; (N = 2 or more) for each n sample (n = 2 or more) following one sample is obtained, and the concentration {P (n)} before the coagulation experiment of each n sample is obtained. A pretreatment unit for injecting the coagulant according to the tester coagulant injection rate {Cj (n)} and obtaining the phosphorus concentration {P '(n)} after the coagulation experiment of each n sample; Calculate the primary coagulant injection rate {O (1)} of one sample section using the concentration {P (1)} of the coagulation experiment of one sample; The flocculant efficiency {Cp (1)} of one sample is calculated using the concentration {P (1)} of the coagulation experiment of one sample and the concentration of phosphorus {P '(1)} after the coagulation experiment; Calculating a jatester coagulant injection rate {Cj (n)} for each n samples (n = 2 or more); (N = 2 or more) section of each n sample (n = 2 or more) by using the coagulation concentration {P (n)} of each n sample and the flocculant efficiency {Cp Calculating the flocculant injection rate {O (n)}; The coagulant efficiency {Cp (n)} of each n sample (n = 2 or more) was calculated by using the concentration {P (n)} before the coagulation experiment of each n sample and the concentration {P ' ; Calculate the second flocculant infusion rate {O '(n)} of each n sample section using the coagulation concentration {P (n)} of each n sample and the flocculant efficiency {Cp (n)} of each n sample And an operation control unit for controlling the flocculation amount of the flocculant.

In the present invention, the jatester coagulant injection rate {Cj (n)} for each of the n samples (n = 2 or more) is calculated by multiplying the secondary coagulant injection rate {O '(n-1) )}: The rate of jatester coagulant injection {Cj (n)} for each n sample (n = 2 or more) is calculated by multiplying the primary coagulant injection rate {O (n-1)}; The coagulant efficiency {Cp (n)} of each n sample (n = 2 or more) is calculated from the concentration [P (n) Is calculated by the relational expression of the JJ tester coagulant injection rate {Cj (n)}; The first coagulant injection rate {O (n)} of each n sample (n = 2 or more) is [concentration of pre-coagulation experiment {P (n)} - target value (Pt)] / angle (n-1)} of the coagulant efficiency {Cp (n-1)} for the sample; The second coagulant injection rate {O (n)} of each n sample section is calculated as [concentration of P (n)} - target value (Pt) before each n sample coagulation experiment] / coagulant efficiency {Cp )}, Which is also characterized by: The primary coagulant injection amount {Co (n)} of each n sample section calculated using the first coagulant injection rate {O (n)} of each n sample (n = 2 or more) It is also characterized by injecting the second coagulant injection amount {Co '(n)} of each n sample section calculated using the second coagulant injection rate {O' (n)} of the sample section.

In addition, in the present invention, the operation control unit does not perform the coagulation experiment by injecting the coagulant of the jatester for each of at least one n samples (n = 2 or more), and the operation control unit uses the coagulant efficiency of each (n-1) , And the coagulant efficiency {Cp (n)} of each n sample (n = 2 or more) is also calculated.

Also, in the present invention, the operation control unit may use the coagulant injection rate {O '(n-1)} after the coagulating experiment of each (n-1) sample section with respect to each of the at least one n samples (n = 2 or more) And the second coagulant injection rate {O '(n)} of each n sample section is also calculated.

Also, in the present invention, the operation control unit may calculate the second coagulant injection rate {O '(n)} of each n sample sections or the second coagulant injection amount {n' Co '(n)} is not calculated.

In the present invention, the jatester coagulant injection rate {Cj (n)} for each of the n samples (n = 2 or more) is calculated by multiplying the secondary coagulant injection rate {O '(n-1) )}, And the coagulant efficiency {Cp (n)} of each n sample (n = 2 or more) is calculated from the concentration [P (n) (N = 2 or more) in the present invention can be calculated by using the relational expression of the secondary coagulant injection rate {O '(n-1)} / (N = 2 or more) of each n sample (n-1) is calculated according to the primary coagulant injection rate {O (n-1)} of each (N)) / (n-1) concentration of the first coagulant in the sample interval {P (n)} - Rate {0 (n-1)}. ≪ / RTI >

Since the concentration of the water before the flocculation experiment and the concentration of the phosphor after the flocculation experiment are obtained in the nearest field to the nearest site, it is possible to maintain the target value of the water quality while reducing the amount of the flocculant injected by applying the optimum flocculant injection rate It is effective.

In addition, the present invention minimizes the pretreatment time of one cycle to obtain the concentration before the coagulation test and the concentration after the coagulation test, thereby optimizing the coagulant injection rate to the site, thereby maintaining the target value of the water quality .

Further, the present invention has the effect of shortening the filtration time of the filter, suppressing the floating material or the like from being stuck in the filter, and increasing the filtration efficiency, thereby shortening the pretreatment time.

Further, the present invention has an effect that a reliable measurement value can be obtained even when a sample of a high concentration and a low concentration is measured by one preprocessing apparatus.

In addition, in the present invention, not only the accuracy of measurement is ensured by washing each of the inside of a water tank in which different samples are stored while reducing the cycle time, and even when each water tank is washed, And the processing time can be shortened.

In addition, the present invention has the effect of washing the filtration tank (inflow filtration tank, inflow water tank and filtration water tank) during the coagulation test in the jatester tank, thereby shortening the pretreatment time.

Further, the present invention has an effect that the pretreatment time can be shortened because the jatester tank can be cleaned while filtering the sample after the coagulation test.

In addition, while the present invention is capable of filtering and washing the sample before the flocculation experiment and then washing the sample after the flocculation experiment, the phosphorus concentration of the sample before the flocculation experiment is measured in one measuring device separately from the filtration, Since the phosphorus concentration of the sample after the experiment can be measured, the pretreatment time is greatly shortened.

The 1 cycle section of the present invention is determined by the time taken for the filtered sample to be collected from the measuring device to collect in the filtration tank, the time taken to measure the phosphorus concentration of the raw water sample, and the time taken to measure the phosphorus concentration of the flocculation sample So that the pre-treatment time is greatly shortened.

In order to cope with changes in the influent water quality, the present invention measures the concentration of dissolved phosphorus (phosphorus phosphate) in real time in one cycle and measures phosphorus concentration and coagulant efficiency in real time to cope with the changed coagulant efficiency In addition, the measurement and treatment are performed so that the time of one cycle is shortened to substantially reduce the amount of the coagulant used for removing phosphorus contained in the wastewater, and to stabilize the discharged water quality more stably (Input amount) of the coagulant to keep the amount of the coagulant within a predetermined range (e.g.

The present invention can be applied to a system capable of stably dropping the phosphorus concentration of the discharged water to the target concentration by injecting the optimum flocculant into the field irrespective of the environment in which either the phosphorus concentration and the influencing factor change or the environment changes at the same time It is effective.

In addition, the present invention not only calculates the coagulant injection rate to be injected into the site after the concentration of phosphate is measured in one cycle in one cycle or in a certain interval of the system operated in a series of cycles, This system injects the coagulant into the field twice in a single cycle to newly calculate the coagulant injection rate to be injected into the field even after the efficiency of the coagulant is calculated, thereby controlling the amount of coagulant injected in the field in real time.

In addition, the present invention uses the measurement value of the raw water which is closer to the field, by making the measuring time for measuring the phosphorus concentration shorter than the measuring period for measuring the phosphorus concentration of the raw water, so that the approximate value applied to the field and the actual value The error can be minimized.

FIG. 1 is a front view showing a pretreatment system according to a first embodiment of the present invention, which comprises an inlet filtration tank, a jester trough, a transfer tube, and the like. FIG. 2 shows a pretreatment system according to a second embodiment of the present invention, in which the pretreatment system of FIG. 1 has a separate filtered water storage unit. FIG. 3 is a front view showing a pretreatment system according to a third embodiment of the present invention, which comprises a filtration water tank, a jester tank, a transfer pipe, a supply pipe, and the like, having a filter slanted nearly horizontally. 4 shows a pretreatment system according to a fourth embodiment of the present invention, which comprises a filtration water tank, a jay tester tank, a feed pipe, a feed pipe, and the like having the inclined filter of the present invention. 5 shows a pretreatment system according to a fifth embodiment of the present invention, which comprises a filtration water tank having a horizontally tapered filter, a filtration water tank partially opened in the adjacent inflow water tank, a jester trough and a transfer pipe. FIG. 6 shows a pretreatment system according to a sixth embodiment of the present invention, which comprises a filtration water tank having an inclined filter, a filtration water tank partially open to the inflow water tank adjacent thereto, a jester trough, and a transfer pipe.
7 is a block diagram showing a wastewater treatment apparatus to which the pretreatment system and the optimum control system of the present invention are applied.
FIG. 8 is a schematic time chart showing the operations of the preprocessor and the arithmetic control unit for each time interval in each n sample sections of the present invention. FIG. 9 is a time chart when the cycle sections do not overlap in the present invention. 10 is a time chart in the case where cycle sections overlap in the present invention.
11 is a graph showing a relationship between a measured value {P (n)} at the time of 10-minute cycle concentration, a predicted value {E (n)} predicted by three conventional past measurement values, (n + 1)}, the actual value {P (n + 1)}, and the difference between the measured value and the actual value {P (n) - P (n + 1)}. 12 is a graph comparing the 10-minute periodic predicted value with the actual value. 13 is a graph comparing the measured value with the actual value in the 10-minute cycle. 14 is a graph comparing measured values, predicted values, and actual values in 70 intervals. 15 is a graph showing a difference between a predicted value and an actual value in 70 intervals. 16 is a graph showing the difference between the recent measured value and the actual value. FIG. 17 is a line graph comparing the difference between the 10-minute cycle (measured value-actual value) and (predicted value-actual value). 18 is a bar graph comparing the difference between the 10-minute cycle (measured value-actual value) and (predicted value-actual value). 19 is a line graph comparing the difference between the difference (measured value-actual value) of 10 minutes (predicted value-actual value) and 70 intervals. 20 is a bar graph comparing the difference between the 10-minute cycle (measured value-actual value) and (predicted value-actual value).
FIG. 21 is a graph showing a relationship between a measured value {P (n)} at the time of 20-minute density measurement, a predicted value {E (n)} predicted by three conventional past measurement values, (n + 1)}, the actual value {P (n + 1)}, and the difference between the measured value and the actual value {P (n) - P (n + 1)}. 22 is a graph comparing 20-minute cycle measured value, predicted value, and actual value. FIG. 23 is a graph comparing a 20-minute periodic predicted value with an actual value. 24 is a graph comparing the measured value with the actual value in the 20 minute cycle. 25 is a line graph comparing the difference between the 20 minute cycle (measured value-actual value) and (predicted value-actual value). FIG. 26 is a bar graph comparing the difference between the 20 minute cycle (measured value-actual value) and (predicted value-actual value). FIG. 27 is a line graph comparing the difference between the difference (measured value-actual value) of 20 minutes (predicted value-actual value) and 70 intervals. FIG. 28 is a bar graph comparing the difference between the 20 minute cycle (measured value-actual value) and (predicted value-actual value).
FIG. 29 is a graph showing a relationship between a measured value {P (n)} at the time of 30-minute density measurement, a predicted value {E (n)} predicted by three conventional past measured values, (n + 1)}, the actual value {P (n + 1)}, and the difference between the measured value and the actual value {P (n) - P (n + 1)}. 30 is a graph comparing a 30-minute periodic predicted value with an actual value. 31 is a graph comparing the measured value with the actual value in the 30 minute cycle. FIG. 32 is a line graph comparing the difference between the 30-minute cycle (measured value-actual value) and (predicted value-actual value). 33 is a bar graph comparing the difference between the 30 minute cycle (measured value-actual value) and (predicted value-actual value). 34 is a line graph obtained by comparing the difference between the difference (measured value-actual value) of 30 minutes (predicted value-actual value) and 70 intervals. 35 is a bar graph comparing the difference between the 30 minute cycle (measured value-actual value) and (predicted value-actual value).
FIG. 36 is a schematic diagram showing the operation of the preprocessing unit and the arithmetic control unit when the cycle intervals do not overlap in the present invention. FIG. 37 is a schematic diagram showing the operation of the preprocessing unit and the arithmetic control unit when the cycle intervals overlap in the present invention. FIG. FIG. 38 is a flowchart for explaining the operation of the preprocessing system and the optimal control system when cycle sections do not overlap in the present invention. FIG. FIG. 39 is a flow chart for explaining the operation of the preprocessing system and the optimal control system in the case where cycle intervals overlap in the present invention.
40 is a table showing operation data of an optimum control system including a pretreatment system as an experimental example. FIG. 41 is a graph showing the concentration of the operation water as a raw water sample, the concentration as a flocculating sample, the experimental example TP (one hour measurement period), the comparative example TP, the primary and secondary flocculant injection rates, and the fixed injection rates. FIG. 42 is a graph comparing the change of the concentration of influent and the change of the flocculant efficiency. 43 is a graph comparing the change of the flocculant efficiency with the change of the flocculant injection rate. 44 is a graph comparing changes in the phosphorus concentration of the influent raw water with changes in the coagulant injection rate. 45 is a graph comparing changes in phosphorus concentration, changes in the field coagulant injection rate, and changes in TP in the experimental examples. 46 is a graph comparing an experimental example in which the coagulant injection rate is determined and a comparative example in which the coagulant injection rate is fixed.

In processing the wastewater, the phosphorus concentration value measured by sampling the incoming raw water is the measured value {P (n)} for the raw water that has already passed the site, and the coagulant is injected at the site where only the phosphorus concentration is measured and the coagulant is injected The actual concentration value at that time is the value {P (n + 1)} measured in the next cycle. When the coagulant is injected into the field, the actual value measured in the next cycle can not be known, and therefore, the approximate value can not but be used instead of the actual value. In order to obtain such an approximate value, there is a method of predicting using the three measured values measured immediately before the 15-minute measurement period. However, the approximate value including the predicted value is different from the actual value. Such a difference error can be a negative value (negative number) or a positive value (positive number). In addition, not only the phosphorus concentration can be changed depending on the raw water but also the flocculant efficiency may be changed, so that the efficiency of flocculant may be different even if the measured phosphorus concentration is the same. However, in order to calculate the flocculant efficiency, it is necessary not only to measure the phosphorus concentration of the influent raw water sample, but also to measure the phosphorus concentration of the flocculated sample and to perform pretreatment such as filtration, so that it takes more time . Therefore, if the flocculant efficiency is to be reflected in the field, the cycle of measuring the phosphorus concentration of the raw water sample in the field must be considerably long, so that the difference between the approximate value and the actual value in the case of the phosphorus concentration change becomes larger A problem arises.

Therefore, in order to obtain the flocculant efficiency, the actual difference between the approximate value and the actual value is inevitably increased because the phosphorus concentration of the raw water is measured and the pretreatment (time) such as the coagulation test of the raw water is further required. Therefore, if the coagulant efficiency is obtained without increasing the cycle of only the phosphorus concentration of the raw water sample, the cycle for measuring only the phosphorus concentration becomes longer due to the time delay occurring in the pretreatment apparatus, so that the approximate value is not significantly different from the actual value do. Furthermore, if the period for measuring only the phosphorus concentration of the raw water sample can be made shorter than the conventional one, the approximate value will be closer to the actual value.

In general, the measurement time of a phosphorus concentration measuring instrument takes a minimum of about 15 minutes. However, since the measuring time can be reduced to about 5 minutes depending on the concentration of phosphorus phosphorus to be measured, the period for measuring phosphorus concentration can also be reduced. However, even if the period of only the phosphorus concentration measurement is shortened, the measurement time can be shortened at the pre-treatment time for obtaining the conventional flocculant efficiency, but the total pretreatment time for coagulation test, filtration, transportation, There is a limitation in shortening the period for measuring only phosphorus concentration even if the measurement time is shortened. Therefore, it is important to minimize the other pre-treatment time outside the measurement time in order to obtain the flocculant efficiency, and it should be no problem to use the approximate value obtained in such a measurement cycle.

First, we examine how the difference between the previous predictive method and the actual value varies according to the measurement period, examine whether there is an approximate value that can be less than the difference, and determine the coagulant efficiency in such a measurement cycle. In addition, it is possible to determine and control the coagulant injection rate at the phosphorus concentration measured within one cycle using such a pretreatment system, as well as determine and control the coagulant injection rate further by the calculated coagulant efficiency We will look into the optimal control system for flocculants. Here, if the measurement time is shorter than the measurement period, since the approximate value is used as close to the actual measurement value, the coagulant injection rate is determined with a more recent measurement value regardless of reflecting the coagulant efficiency. This is because, if the measurement time is shorter than the measurement period, the measurement value closer to the field can be used from the point in time when the measurement value comes early to the point in time when the measurement value comes later.

The difference between the approximate value and the actual value is examined by varying the measurement period.

Here, the approximate value and the actual value are compared with each other in a case where the approximate value is the predicted value obtained by the prediction method and the measured value obtained by using the recently measured value. Then, we examine whether the recently measured value can be used as an approximate value or the measurement period in which the latest measured value can be used as an approximate value.

As the measurement period of phosphorus concentration is shorter, the phosphorus concentration of the raw water passing through the site most recently and the phosphorus concentration of the raw water passing the present site will not be substantially different. Therefore, since the measurement period of the phosphorus concentration is closely related to one cycle time for obtaining the flocculant efficiency, the measurement period of the phosphorus concentration can be divided into 30 minutes, 20 minutes, 10 minutes, and 5 minutes. Since the coagulant efficiency is determined by measuring the concentration of phosphorus in two cycles within one cycle, the measurement cycle is divided into 30 minutes, 20 minutes, and 10 minutes, and measurement is performed in each case (N) and the actual value P (n + 1) in a case where a recent measured value P (n) is different from the actual value P (n + 1)].

First, the case of measuring the phosphorus concentration in a 10-minute cycle will be described first.

11 is a graph showing a relationship between a measured value {P (n)} at the time of 10-minute cycle concentration, a predicted value {E (n)} predicted by three conventional past measurement values, (n + 1)}, the actual value {P (n + 1)}, and the difference between the measured value and the actual value {P (n) - P (n + 1)}.

12 is a graph comparing a 10-minute periodic predicted value with an actual value, and FIG. 13 is a graph comparing a 10-minute periodic measured value with an actual value. 14 is a graph comparing measured values, predicted values, and actual values in 70 intervals. 15 is a graph showing a difference between a predicted value and an actual value in 70 intervals. 16 is a graph showing the difference between the recent measured value and the actual value.

17 is a line graph comparing the difference between the 10-minute cycle (measured value-actual value) and the (predicted value-actual value), and FIG. 18 is a graph showing the difference between the 10- Predicted value-actual value). FIG. 19 is a line graph obtained by comparing the difference between the difference (measured value-actual value) of 10 minutes (measured value-actual value) and the estimated value-actual value with respect to 70 intervals. Value-actual value) and the difference between (predicted value-actual value).

10 to 20, according to FIG. 11 to FIG. 20, the predicted value is much larger than the actual value in most sections, and the measured value is slightly larger or slightly smaller than the actual value is repeated .

10, the difference between the predicted value and the actual value (error by the predicted value: predicted value-actual value) when the approximate value is the predicted value and the difference between the measured value and the actual value when the approximated value is used as the measured value (Error by measured value: measured value and actual value). The error due to the predicted value has a positive value in most intervals and a negative value in some intervals. On the other hand, the positive value in the error due to the (recent) measurement value is relatively small compared with the predicted value, The values are not significantly different from predicted values. Here, it can be seen that negative values do not appear in successive periods, but are repeated with positive values. That is, since the errors of the positive and negative sounds can be canceled substantially in the two-cycle interval, the error of the measured value in the 10-minute cycle will be small compared with the conventional prediction method. Therefore, It can be said that it can be used as. Therefore, even if the measured value is used as an approximate value instead of the predicted value in the cycle shorter than the 15-minute measurement period, the positive value is decreased while the negative value is substantially reduced to the difference It can be understood that the measurement value can be used as an approximate value in a cycle shorter than the 15 minute measurement period. Therefore, when the measured value is used as an approximate value, it is preferable to set the cycle time for obtaining the flocculant efficiency to 15 minutes or less .

Let's take a look at the case of measuring phosphorus concentration at 20 minute intervals.

FIG. 21 is a graph showing the relationship between the measured value P (n) at the time of 20-minute cycle concentration, the predicted value E (n) predicted from the past three past measured values, P (n + 1)}, the actual value P (n + 1), and the difference between the measured value and the actual value P (n) -P (n + 1).

FIG. 22 is a graph comparing the 20-minute cycle measurement value, the predicted value, and the actual value, FIG. 23 is a graph comparing the 20-minute periodic predicted value with the actual value, to be.

25 is a line graph comparing the difference between the 20-minute cycle (measured value-actual value) and the (predicted value-actual value), and FIG. 26 is a graph showing the difference between the 20- Predicted value-actual value). 27 is a line graph obtained by comparing the difference between the difference (measured value-actual value) of 20 minutes (measured value-actual value) and the estimated value (actual value) And the difference between (predicted value and actual value).

(Measured value-actual value) in the case of using the approximate value as the measured value with reference to the respective graphs for the 20-minute cycle, the difference (the error by the predicted value) in the case of using the approximate value as the predicted value Compare the difference (error by measurement value). The error due to the predicted value has a positive value in most intervals and a negative value in some intervals. On the other hand, the positive value in the error due to the (recent) measurement value is relatively small compared with the predicted value, The value is compared with the predicted value, and it can be seen that the number of occurrences has increased. That is, when the measured value is used and the predicted value is used, the error due to the measured value is relatively smaller than the error due to the measured value when the measured value is positive, It can be seen that the error due to the value is relatively larger than the error due to the predicted value. Therefore, in the 20-minute measurement period, it is necessary to reduce the error of the sound by using the safety factor (which is smaller than the measurement value) to reduce the negative value. If so, the coagulant is injected that much more. Even if the measurement period is 20 minutes, if the measurement time is shortened to about 5 minutes, the error can be reduced rather than 20 minutes, which is more advantageous than the 15 minute cycle predicted value. However, Min.

The case where the phosphorus concentration is measured at a cycle of 30 minutes will be briefly described.

FIG. 29 is a graph showing a relationship between a measured value {P (n)} at the time of 30-minute density measurement, a predicted value {E (n)} predicted by three conventional past measured values, (n + 1)}, the actual value {P (n + 1)}, and the difference between the measured value and the actual value {P (n) - P (n + 1)}. FIG. 30 is a graph comparing the 30-minute cycle predicted value with the actual value, and FIG. 31 is a graph comparing the 30-minute cycle measurement value with the actual value.

32 is a line graph comparing the difference between the 30 minute cycle (measured value-actual value) and the (predicted value-actual value), and FIG. 33 is a graph showing the difference between the 30 minute cycle Predicted value-actual value). 34 is a line graph obtained by comparing the difference between the difference (predicted value-actual value) of the 30-minute cycle (measured value-actual value) and 70 intervals, And the difference between (predicted value and actual value).

30 minutes, it can be seen that the difference between the difference (the error by the predicted value) and the difference between the measured value and the measured value (difference between the measured value and the actual value) when the approximate value is used as the predicted value (Error due to the measured value). The error due to the predicted value has a positive value in most intervals and a negative value in some intervals. On the other hand, the positive value in the error due to the (recent) measurement value is relatively small compared with the predicted value, It can be seen that the value is increased compared to the predicted value and the number of occurrences is increased, and is constantly displayed in a certain period. That is, when the measured value is compared with the predicted value, the error due to the measured value is relatively smaller than the error due to the measured value when the measured value is positive, while the error due to the measured value is negative Is relatively larger than the error, and is concentrated in a certain section. Therefore, in the case of a cycle in which the coagulant efficiency with a measurement period of 30 minutes or more is obtained, a problem occurs even if the measured value is used as an approximate value or a predicted value is used.

As described above, as to whether or not the latest measurement value can be used as an approximate value of the in-situ concentration for the 10-minute cycle, 20-minute cycle, and 30-minute cycle with respect to the incoming raw water, conventionally, As can be seen from the above, in the 10-min cycle, it can be seen that the measured value is less in the negative error than the predicted value, and the positive error is less. Therefore, for the incoming raw water, , It can be seen that recent measurements can be used as approximate values. Furthermore, even when the coagulant efficiency measurement period is 10 minutes or more, when the measurement time is less than 10 minutes (for example, 5 minutes), when the measured value is obtained, the coagulant injection rate If it is determined once more in advance and injected into the site, the time required for the coagulant efficiency can be made 10 minutes or more.

Furthermore, in the case of measuring the phosphorus concentration of the coagulated sample, instead of measuring only the phosphorus concentration of the raw water sample using one measuring instrument having a time (measuring time) for measuring the phosphorus concentration of 10 minutes, It is necessary to set the cycle for measuring the phosphorus concentration to not less than 20 minutes, so that the above-mentioned error occurs. Therefore, in order to measure the concentration of phosphorus after the experiment of aggregation of the sample while reducing the error, it may be preferable that the time for obtaining the efficiency of the flocculant does not exceed 15 minutes. To do so, it is desirable to shorten the phosphorus concentration measurement time as short as possible. However, it is desirable to set each processing time in consideration of the accuracy of the measurement in the field and the stability of the system.

Hereinafter, the experimental example will be described in detail.

In the experimental example, the measurement time for measuring the phosphorus concentration was set to about 5 minutes, and the time required for obtaining the flocculant efficiency was determined to be about 13 minutes (measurement period in the case of not overlapping), and then the pre- Will be discussed in detail.

In FIGS. 8, 9 and 10, the phosphorus concentration measuring time (for example, 5 minutes) and the phosphorus concentration measuring period (for example, 10 minutes for overlapping and 13 minutes for not overlapping) The pretreatment system, which can measure both phosphorus concentration and phosphorus concentration after agglomeration experiment, will be examined for each treatment and operation by each time interval.

As shown in FIGS. 8, 9, and 10, in the cycle of obtaining the flocculant efficiency, the experimental period of the cycle section for obtaining the flocculant efficiency is as short as the treatment time, so that the raw water filtration time, It is the time required to measure the phosphorus concentration twice and the filtration time once. Therefore, the time of the cycle section for obtaining the flocculant efficiency is the time required to measure the concentration of the sample before the flocculation experiment and the concentration of the phosphorus after the flocculation experiment Make the measurement time as close as possible. The shorter the filtration time or the faster the measurement time is possible, the shorter the measurement period can be. The faster the measurement time is, the less the cycle for obtaining the flocculant efficiency can be reduced, and the flocculant can be injected using an approximate value closer to the actual value of the field.

If the cycles for obtaining the flocculant efficiency are overlapped, the cycle time for obtaining the flocculant efficiency can be shorter (for example, 10 minutes) than in the case where the cycles do not overlap (for example, 13 minutes) More than the example can increase.

In addition, instead of measuring the concentration of aggregated phosphorus, the sampling time of the influent source water is reduced so that only the phosphorus concentration is measured in a shorter period of the phosphorus concentration measurement period, The concentration of the primary phosphorus and the concentration of the secondary phosphorus can be determined for the raw water flowing into the reactor, and the coagulant injection rate can be determined twice. The coagulant efficiency at this time utilizes the previous coagulant efficiency.

The pretreatment system and the optimum control system which can use the recent measured values as approximate values without measuring errors while measuring the concentration before the agglutination test in one cycle and measuring the phosphorus concentration after the agglomeration experiment are shown in FIGS. 8, 9 10, and is operated. A specific embodiment of such a preprocessing system and an optimal control system will be described.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention. Since the present invention has various technical features, various types of embodiments are possible through the entire specification, so that the present invention is not limited to the embodiments described in detail herein.

FIGS. 1 to 6 schematically illustrate embodiments 1 to 6 for explaining the pretreatment system of the present invention. FIG. 7 is a schematic view of a wastewater treatment apparatus to which the pretreatment system of the present invention is applied to be.

1. The preprocessing system 100 according to the first embodiment is shown in Fig. 1, and a specific operation will be described with reference to Figs. 8, 9 and 10. Fig.

(1) When the present invention is operated, the sampling raw water is filled in the inlet portion 110a of the inlet filtration tank 110 of the preprocessing unit 101 and the filtration of the sample is started by the filter (filtration filter) 111. That is, when the present invention starts automatic analysis (measurement), the inlet filtrate raw water feed valve 115 is opened and at this time, the closed inlet filtrate drain valve 116, 117 can be opened simultaneously, the external raw water feed pump is operated Raw water is sampled and raw water is supplied to the inflow filtration tank 110. In the event that washing water remains in the inlet filtration tank, the inlet filtrate drain valve (116, 117) may be left open for a few seconds after the external source water supply pump has been operated to push the remaining wash water in the inlet filtration tank with raw water (raw water wash). If the inlet filtrate drain valves 116 and 117 are open, the inlet filtrate drain valves 116 and 117 are closed a few seconds after the raw water feed pump is activated. When the supply of the raw water is completed, the external raw water supply pump is stopped after the inlet filtrate drain valves 116 and 117 are closed (the amount of the sample contained in the inlet filtrate can be controlled by closing the amount of the sample) ) Is closed. The amount of sample contained in the inflow filtration tank is determined by the time the inlet filtrate raw water feed valve 115 is open (e.g., about 4 seconds for fully opening time, about 26 seconds for raw water sampling, about 4 seconds for fully closing time) It is decided. As described above, the amount of the sample of the inflow filtration tank is adjusted to a certain level by the on / off time of the supply valve, the drain valve, and the like. In addition, a water level sensor for maintaining a constant water level may be provided, or a discharge port may be formed at the water level to maintain a constant water level, and the discharge port may be formed to discharge raw water flowing in excess of the water level. In the example, the ON / OFF time of the valve is adjusted so that the sample is at a constant water level. An overflow pipe may be installed separately if necessary to prevent overflow of raw water during malfunction.

When the raw water is supplied, the filtration of the sample is started through the filter 111, and the filtered sample is collected in the filtration part. As shown in FIG. 2, the filtration unit may be provided with a filtered water storage unit 214 separately from the lower end of the inflow filtration tank to store the filtered sample (filtered water).

(2) At the same time as the sample is supplied to the inflow filtration tank 110 as described above, the sample is filled in the jam tester tank 120 sequentially. When the system is started, the jatester tank water supply valve 125 is opened, and at this time, the closed jatheater tank drain valve 129 can be opened at the same time. The external water supply pump is operated to sample Fill the enemy water. In the embodiment, the jatheater raw water supply valve 125 and the raw water supply valve 115 of the inflow filtration tank are configured as separate valves, but can be constituted by one valve. When the supply of raw water is completed, the external water supply pump is stopped, and the jatheater water supply valve 125 is immediately closed. If the washing water remains in the jester tester, the jester trough drain valve 129 is opened for a few seconds in order to push out the washing water remaining in the jester trough by the raw water, that is, to wash with raw water. The amount of sample to be filled in the jester tester is determined by adjusting the on / off times of the valves. In order to finely adjust the amount of the raw water supplied to the jester tanks after the supply of raw water is finely adjusted, it is possible to adjust the closing time of the jitter trough drain valve 129 after the supply of the raw water is completed. The jaster tester crude water supply valve 125 is opened simultaneously with the inflow filtration raw water supply valve 115 or after a predetermined time elapses after the inflow filtration raw water supply valve 115 is opened or when the raw water is supplied to the inflow filtration tank It can be opened later. It is possible to shorten the time for filling the raw water in the inflow filtration tank by opening only the inflow filtration raw water supply valve 115 and supplying the raw water. In addition, since the jest tester must maintain a precise sample amount, it is possible to control the external sample supply pump by installing a water level sensor. An overflow pipe can be installed if necessary to prevent overflow of water on the jest tester in case of malfunction.

(3) When the sample is filled in the jatester tank 120, a coagulant (medicine) is injected into the jatester tank to start the jar test coagulation experiment. After the raw water is supplied to the jester trough so that the raw water is filled in the predetermined amount, the juttering tank coagulant supply metering pump 123 injects the calculated amount of coagulant. Coagulant injections use a metering pump that can be done in micros at one time.

(4) When the flocculant {Cj (n)} is injected, stirring is started in the jatester tank. When the coagulant is injected, the jatheter stirring motor 121 rotates and stirs at high speed for T1 seconds (for example, 1 minute). When the high-speed stirring is completed, lower the stirring intensity and stir at low speed for T2 seconds (for example, 3 minutes). It is also possible to set stirring at a high speed stirring time T1 seconds, a medium speed stirring time T2 and a low speed stirring time T3 seconds. The agitation strength (G) and the reaction time (T) are adjusted according to the site and stirred.

(5) While the coagulation test is proceeding in the jittering tank 120 as described above, the filtered sample is collected in the filtration unit 110b of the inflow filtration tank 110. [ When the filtered sample is collected to a certain degree, the phosphorus concentration is measured by a small amount of phosphorus concentration (PO4-P). In the case of using a measuring device for measuring the phosphorus (PO4-P, phosphate) concentration by sucking the filtered sample collected in the filtration part, sufficient filtered water can be stored in the filtration part during low speed stirring in the jester tester, Measurement of the phosphorus concentration of the filtered sample (sample before the flocculation experiment) is started. The time required to measure the phosphorus concentration may vary depending on the instrument type. A measuring instrument such as a measurement cycle of at least about 5 minutes or at least about 15 minutes is known. When using a 5-minute cycle meter, the time taken to inhale the sample is 30 seconds and the analysis result comes out after 4 minutes {P (n), measured at n_cycle}. When the result is obtained, the instrument performs a constant wash of its own for 25 seconds. For the first 25 seconds of the 30-second time to inhale the sample, clean the inside of the aspirator and the instrument with the sample. The first and second coagulant injection rates and coagulant (drug) efficiency {Cp (n)} injected into the site from the operation control section of the optimal control system are calculated using the concentration concentration P {n . (5) -Pt} / Cp (5)} is obtained when the concentration {P (5)} of the coagulation test for the five samples is obtained, 4), where Cp (4) is the previously calculated coagulant efficiency at the time of injection, the primary site injection rate is determined and injected into the site (the following relationship may vary depending on the embodiment ).

(6) When the measuring device completes the suction of the filtration sample before the coagulation experiment, the first washing of the inflow filtration tank is started. That is, when the measuring device completes sucking the sample, the inlet filtrate tank inlet drain valve 116 and the filter drain valve 117 are opened to discharge the sample. The water in the inflow filtration tank is washed and the washing water (constant water) is sprayed in the lower direction from the upper part of the inflow filtration tank by opening the inlet filtrate tank washing water supply valve 141 together with the discharge of the sample. After cleaning, wait until the remaining washing water is drained, then close the inlet filtrate inlet valve 115 and the filtrate drain valve 117. At this time, the filtrate drain valve 117 or the inlet drain valve 115 may be kept open if it is opened at the beginning of the next cycle.

(7) After the primary washing of the inlet filtration tank, the flocculated sample is transferred to the inlet of the inlet filtration tank. That is, after the first washing of the inflow filtration tank is completed and the inflow filtrate tank inflow drain valve 115 is closed, the transfer valve 122 of the transfer pipe 133 for transferring the coagulation sample is opened to transfer the coagulated sample from the ja- To the bottom of the filter. When the transfer is completed, the transfer valve 122 is closed. The position of the inlet of the jatheater-side transfer pipe and the position of the outlet of the transfer tube on the inlet filtration tank into which the coagulation sample is inserted are determined in consideration of the selection position of the sample to be transferred and smooth transfer of the sample. The position of the inlet 155 of the transfer tube 133 is set to be higher than the position of the outlet 156 of the transfer tube 133 so that the sample can be smoothly transferred.

(8) When the coagulated sample is transferred, the jittering tank 120 is cleaned. That is, when the transfer of the coagulated sample (about 1 minute and 20 seconds) is completed and the transfer valve 122 is closed, the jatheater coarse drain valve 129 is opened to discharge the coagulated sample that has been transferred. Open the jest tester bath water supply valve (143) and clean the inside of the jest tester tank (about 30 seconds) after the discharge starts. After cleaning, the water supply valve 143 is closed, and the jam tester vessel drain valve 129 is closed after waiting for the remaining water to be discharged (about 50 seconds), and then the next water is supplied. It can be opened in advance to adjust the amount of the next sample of the jester tester.

(9) The sample which has been agglomerated and filtered on the above (sample after agglomeration experiment) starts measurement on the phosphorus concentration (PO4-P) meter. That is, after the flocculated (chemical) treated specimen is transferred to the inflow filtration tank for a certain period of time, the flocculated and filtered specimens collected in the filtration part or the storage part 214 after several minutes, The concentration is measured (after the measurement of the sample before the coagulation test and after the self-cleaning of the measuring device) {P '(n)}. (5) -P (5) -P (5)) is obtained, the coagulant efficiency (per unit volume) of 5 samples is calculated as Cp (5)} / Cj (5), and when the flocculant efficiency Cp (5) is obtained, the second coagulant injection rate is O '(5) = {P (5) 5), the amount of the second field coagulant injected is determined and injected into the site.

(10) After the measuring device completes the suction of the filtration sample after the coagulation test, the secondary washing of the inflow filtration tank is started. That is, after the measurement of the PO4-P concentration of the sample after the agglomeration experiment, washing water (constant water) is sprayed downward from the upper part of the inflow filtration tank to wash the inflow filtration tank and the filter. When the washing water collects in the filtered water storage 214, the filtered water storage is also cleaned. After cleaning the inflow filtration tank, wait for the remaining cleaning water to be drained, then close the inlet filtrate inlet valve 115 and the filtrate drain valve 117. At this time, the valve can be kept open if it is opened at the beginning of the next cycle.

2. The preprocessing system 200 according to the second embodiment will be described in detail with reference to FIG. 2. The second embodiment differs from the first embodiment in that a filtered water storage section is separately provided.

Various modifications can be made to the first embodiment and the second embodiment. For example, the location of the inlet and outlet of the transfer tube may be different and the filter may be installed at a location above the bottom of the incoming filtrate bath.

3. The preprocessing system 300 according to the third embodiment will be described in detail with reference to FIG.

(1) Inlet water tank, filtration tank washing and sample filtration

The inlet water tank raw water supply valve 315, the filtration water tank raw water supply valve 333, the inflow water tank drain valve 316 and the filtration water tank drain valve 317 are opened at the same time. The inflow water tank raw water supply valve 315 is opened, the external raw water supply pump is operated, and the raw water is sampled to fill the inflow water tank with raw water.

The supply valve 333 of the supply pipe 344 which opens the inflow water supply water supply valve 315 until the water level of the inflow water bath is raised to a predetermined water level and supplies the sample of the inflow water bath to the filtrate water tank after the operation of the external water sampling pump, Keep it open until finished. The inlet water tank drain valve 316 and the filtration water tank drain valve 317 close after a few seconds from the start of the supply of raw water. The amount of the sample in the influent tank is controlled by the on / off time of the raw water supply valve 315. In addition, a water level sensor for maintaining a constant water level may be provided, or a discharge port may be formed at the water level to maintain a constant water level, and the discharge port may be formed to discharge raw water flowing in excess of the water level. In the example, the ON / OFF time of the valve is adjusted so that the sample is at a constant water level. An overflow pipe may be installed separately if necessary to prevent overflow of raw water during malfunction.

The inlet water drain valve 316 and the filtration water tank drain valve 317 are opened for a few seconds when the raw water is supplied.

Then, the filtration of the sample is started through a filter (filtration filter) installed in the filtration tank. The filtered sample may be collected to a place where the measuring instrument can be sucked, or may be stored separately.

(2) Cleaning the jatheater and filling the sample (this process can be done simultaneously with the above step 1).

The jaster tester drain valve 319 and the jester trough water supply valve 325 are opened at the same time and the external water supply pump is operated to open the jaster tester tank 320 until the water level rises to a certain water level, The valve 319 closes after a few seconds. This is also to wash the tank with raw water as in No. 1 above. Fill the sample. By adjusting the operation time of the external raw water supply pump and the opening time of the valve, the water level of the jay tester tank can be kept constant. Also, since the jest test tank needs to maintain an accurate sample volume, it may be possible to control the external sample supply pump by installing a water level sensor. An overflow pipe can be installed if necessary to prevent overflow of water on the jest tester in case of malfunction.

(3) Coagulant (medicine) is injected into the jay tester

When the amount of sample is filled up to the amount determined in the jest tester group, the jestester coagulant supply metering pump 323 doses the predetermined amount of coagulant at a time. Use a microinjection pump that can be injected in microns.

(4) Jatester coagulant mixture

At the same time as the coagulant is administered, the jatheter stirring motor 321 is rotated to perform high-speed stirring for T1 seconds (about 1 minute). When high-speed agitation is completed, lower the agitation intensity and allow low-speed agitation for T2 seconds (about 3 minutes). It is also possible to set stirring at a high speed stirring time T1 seconds, a medium speed stirring time T2 and a low speed stirring time T3 seconds. The agitation strength (G) and the reaction time (T) are adjusted according to the site and stirred.

(5) Primary analysis of filtered sample (raw water PO4-P measurement)

The PO4-P meter sucks the filtered sample (filtered water) during low-speed stirring in the jatestor tank. The time to inhale the filtrate is 30 seconds and the analysis result is 4 minutes later. When the results are available, the PO4-P analyzer will perform a constant wash of its own for 25 seconds. During the first 25 seconds of the 30-second period of inhalation of the filtered water, the inside of the suction pipe and the analyzer are cleaned with the sample.

(6) Inlet water tank and filtration tank first wash

When the PO4-P analyzer completes sucking the sample, the inlet water tank drain valve 316 and the filtration water tank drain 1,2 valves 317 and 318 are opened to discharge the samples of the inflow water tank and the filtration water tank (pre-filtration sample and filtered sample) . When the sample is discharged, the inflow water washing water supply valve 341 and the filtration water tank washing water supply valve 342 are opened to wash the inside of the inflow water tank, the inside of the filtration water tank and the filter with a constant water. After washing, wait until the remaining washing water is discharged, then close the inlet water tank drain valve 316, the filtration water tank drain 1 and 2 valves 317 and 318, and wait until the next sample is supplied.

(7) Transfer of the sample subjected to coagulation experiment in the jatester tank

When the first washing of the inflow water tank 310 and the filtration water tank 312 is completed and the inflow water drain valve 316 and the filtration water tank drain 1 and 2 valves 317 and 318 are closed, the transfer valve 322 of the transfer pipe 333 is closed, And the coagulated sample is transported from the jester trough 320 to the bottom of the filter of the filtration tank.

Thereafter, filtration of the coagulated sample is started through the filter 311 mounted in the filtrate tank, and the filtered sample (filtrate) starts collecting.

(8) Secondary analysis of the filtered sample after the jatten coagulation test (measurement of PO4-P concentration of the coagulated sample)

The coagulated sample is transferred, and after a few minutes the PO4-P meter sucks the filtered sample through the filter. The time to inhale the filtrate is 30 seconds and the analysis result is 4 minutes later. When the results are available, the PO4-P analyzer will perform a constant wash of its own for 25 seconds. During the first 25 seconds of the 30-second period of inhalation of the filtered water, the inside of the suction pipe and the analyzer are cleaned with the sample.

(9) Cleaning of jade tester

When the PO4-P measuring unit has sucked the sample, it opens the jatheater drainage valve 319, the filtration tank drains 1 and 2 valves 317 and 318, and collects the samples of the filtration water tank and the jester tanks Filtered water of the sample). After a few seconds from the start of the sample discharge, open the filtration water tank rinse water supply valve 342 and the jaster tester water rinse water supply valve 343 to wash the inside of the test tank and the inside of the filtration water tank and the filter with constant water (washing water). After the washing, the filtration water tank washing water supply valve 342 and the jester tanks washing water supply valve 343 are closed to wait until the washing water is drained, and then the filtration water tank drain 1, 2 valves 317, 318 and the jester trough drain valve The controller 319 closes and waits until the next sample is supplied. At this time, the valve can be kept open if it is opened at the beginning of the next cycle.

4. The preprocessing system 400 according to the fourth embodiment will be described in detail with reference to FIG. 4. The fourth embodiment is different from the third embodiment in that the filter is arranged at an angle to the bottom, and the rest of the configuration is the same .

Various modifications can be made to the third and fourth embodiments. For example, the positions of the inlet and the outlet of the transfer pipe may be different, the filter may be inclined more or the higher one of both ends of the filter may be disposed higher.

5. The preprocessing system 500 according to the fifth embodiment will be described in detail with reference to FIG.

(1) Inlet water tank and filtration tank washing and sample filtration

When the analysis is started, the inflow water drain valve 516, the filtration water tank drain valve 517 and the inflow water raw water supply valve 515 are opened. When the incoming water tank raw water supply valve 515 is opened, the external raw water supply pump operates so that the sampling raw water flows into the inflow water tank and the raw water is filled into the filtration water tank through the open portion 555 between the inflow water tank and the filtration water tank.

After the external raw water supply pump is operated, the inflow water raw water supply valve 515 is opened until the water level of the inflow water tank 510 is raised to a certain level, and the inflow water tank drain valve 516 and the filtration water tank drain valve 517 are opened. Closes after a few seconds. The water level of the influent tank can be adjusted by the opening time of the valves. In addition, a water level sensor for maintaining a constant water level may be provided, or a discharge port may be formed at the water level to maintain a constant water level, and the discharge port may be formed to discharge raw water flowing in excess of the water level. In the example, the ON / OFF time of the valve is adjusted so that the sample is at a constant water level. An overflow pipe may be installed separately if necessary to prevent overflow of raw water during malfunction.

The inlet water drain valve 516 and the filtration water tank drain valve 517 are opened for a few seconds when the raw water is supplied.

Then, the filtration of the sample is started through a filter (filtration filter) installed in the filtration tank. The filtered sample may be collected to a place where the measuring instrument can be sucked, or may be stored separately.

(2) Cleaning the jatheater and filling the sample (this process can be done simultaneously with the above step 1).

The jaster trough drain valve 519 and the jester trough water supply valve 525 are opened at the same time and the external raw water supply pump is operated to open the jaster trough tank until the water level reaches a certain level, Closes after a few seconds. This is also to wash the tank with raw water as in No. 1 above. Fill the sample. By controlling the operation time of the external raw water supply pump and the opening time of the valves, the water level of the jay tester tank can be kept constant. In addition, since the jest tester must maintain a precise sample amount, it is possible to control the external sample supply pump by installing a water level sensor. An overflow pipe can be installed if necessary to prevent overflow of water on the jest tester in case of malfunction.

(3) Coagulant (medicine) is injected into the jay tester

When the amount of sample is filled up by the amount determined in the jest tester group, the jesta tester preparation dosing pump 523 doses the prescribed amount of medicine at a time. Use a microinjection pump that can be injected in microns.

(4) Jatester coagulant mixture

At the same time as the coagulant (medicine) is administered, the jatheter stirring motor 521 rotates and performs high-speed stirring for T1 seconds (about 1 minute). When high-speed agitation is completed, lower the agitation intensity and allow low-speed agitation for T2 seconds (about 3 minutes). It is also possible to set stirring at a high speed stirring time T1 seconds, a medium speed stirring time T2 and a low speed stirring time T3 seconds. The agitation strength (G) and the reaction time (T) are adjusted according to the site and stirred.

(5) Primary analysis of filtered sample (sample PO4-P measurement before coagulation experiment)

During low-speed stirring in the jaster tester, the PO4-P meter sucks the filtered sample (filtered water) by the filter. The time to inhale the filtrate is 30 seconds and the analysis result is 4 minutes later. When the result is obtained, the PO4-P meter will perform a constant wash of its own for 25 seconds. During the first 25 seconds of the 30-second period of inhalation of the filtered water, the inside of the suction pipe and the analyzer are cleaned with the sample.

(6) Inlet water tank and filtration tank first wash

When the PO4-P analyzer completes sucking the sample, the inlet water tank drain valve 516 and the filtration water tank drain 1 and 2 valves 517 and 518 are opened to discharge the samples of the inflow water tank and the filtration water tank (the pre-filtration sample and the filtered sample) . When the sample is discharged, the inflow water washing water supply valve 541 and the filtration water tank washing water supply valve 542 are opened to wash the inside of the inflow water tank, the inside of the filtration water tank and the filter with a constant water. After the washing, wait until the remaining washing water is discharged, then close the inlet water tank drain valve 516, the filtration water tank drain 1 and 2 valves 517 and 518, and wait until the next sample is supplied.

(7) Transfer of the sample subjected to coagulation experiment in the jatester tank

After the first washing of the inflow water tank 510 and the filtration water tank 512 is completed and the inflow water drain valve 516 and the filtration water tank drain 1 and 2 valves 517 and 518 are closed, the transfer valve 522 of the transfer pipe 533 is closed, Can be opened to transfer the agglomerated sample from the jatestor tank to the filtration water tank 512 or the inflow water tank 510. The coagulated sample transferred to the inflow water tank is transported through the opening 555 to the bottom of the filter water tank To the bottom of the filter.

Thereafter, filtration of the coagulated sample is started through the filter 511 installed in the filtrate tank, and the filtered sample (filtrate) starts collecting.

(8) Secondary analysis of the filtered sample after the jatten coagulation test (measurement of PO4-P concentration of the coagulated sample)

The coagulated sample is transferred, and after a few minutes the PO4-P meter sucks the filtered sample through the filter. The time to inhale the filtrate is 30 seconds and the analysis result is 4 minutes later. When the result is obtained, the PO4-P meter will perform a constant wash of its own for 25 seconds. During the first 25 seconds of the 30-second period of inhalation of the filtered water, the inside of the suction pipe and the analyzer are cleaned with the sample.

(9) Cleaning of jade tester

When the PO4-P measuring unit completes the suction of the sample, the jatesthetic trough drain valve 519, the filtration tank drains 1 and 2 valves 517 and 518 are opened to collect a sample of the filtration water tank and the jest tester Filtered water of the sample). After a few seconds from the start of the sample discharge, the filtration water tank washing water supply valve 542, the inflow water tank washing water supply valve 541 and the jester tanks water washing water supply valve 543 are opened to separate the inside of the test tank and the inside of the inflow water tank, Is washed with a constant (washing water). After the washing, the inlet water tank washing water supply valve 541, the filtration water tank washing water supply valve 542 and the jester tanks washing water supply valve 543 are closed to wait until the remaining washing water is discharged, and then the filtration water tank drain 1,2 valve 517 , 518 and the jitter trough drain valve 519 are closed and the next sample is supplied.

6, the pretreatment system 600 according to the sixth embodiment will be described in more detail with reference to FIG. 6. In the sixth embodiment, since the filter is arranged obliquely to the bottom and the lower part of the open part is formed wider And the rest of the configuration is the same.

Various modifications can be made to the fifth embodiment and the sixth embodiment. For example, the positions of the inlet and the outlet of the transfer pipe may be different, the filter may be inclined more or the higher one of both ends of the filter may be disposed higher.

7. The optimal control system 700 according to the seventh embodiment will be described in detail with reference to Figs. 8, 9, 10, 36, and 38 (cycle sections do not overlap).

When the operation of the optimum control system 700 is started, n samples (n samples: one sample, two samples, ..., n samples, (n + 1) samples, The concentration of coagulant and the concentration of coagulant after the coagulation test are obtained and the coagulant injection rate to be injected into the field is calculated and controlled.

The pretreatment systems associated with the optimal control system 700 (Figs. 1-6) filter and wash the raw water sample from the filtration tank (corresponding to the inflow filtration tank of the pretreatment unit, or the inflow water tank and the filtrate water tank) The flocculated sample is then filtered and washed; Measuring the phosphorus concentration of the raw water sample in the measuring device, and then measuring the phosphorus concentration of the flocculating sample; It is coagulated and washed in jatester tank. Since the operation (operation) of the filtration tank, the measuring device and the jester tester are repeatedly performed in various sections, the entire pre-treatment time is shortened.

5 Look at the sample. The same shall apply to the next sample.

(1) 5 cycles start after 4 cycles.

Five samples are supplied to each of the filtration tank and the jester tester (50 minutes). At this time, the supply order may be changed as needed. For example, after the supply of raw water to the filtration tank is completed, raw water may be supplied to the jester trough. In this case, the filling time of the raw water in the filtration tank is shortened.

(2) Filter 5 samples in a filtration tank (50 to 52 minutes). The injection rate of the coagulant (Cj (5) = O '(4)} is injected into the jest tester group (the injection rate is the amount of the coagulant per unit volume and is multiplied by the volume of the jester tester) Start the experiment. Rapid stirring is performed for 1 minute and constant stirring is performed for 3 minutes. When the raw water sample is filtered to some extent during the coagulation test, the sample concentration before the coagulation experiment is measured and the measurement of the concentration before the coagulation experiment is started (53 minutes). After the analysis (measurement) of the filtered raw water sample is started, the filter is washed and waited (53, 54 minutes). After the coagulation test by the jatester tank is completed, the coagulated sample is transferred to the filtration tank through the transfer tube (55 minutes) and the coagulation sample is started to be filtered (55 minutes). After the transfer is complete, clean the jest tester and wait (55 to 62 minutes).

(3) The phosphorus concentration of the raw water sample is measured P (5) (57 minutes).

(4) If the filtered water of the coagulated sample is collected to some extent, after the coagulation experiment, the filtered sample is inhaled and measurement of the phosphorus concentration is started after the coagulation experiment (58 minutes). After the flocculation test, the filtration is started and the filtration tank is washed and waited (58 to 62 minutes).

(5) = (P (5) -Pt} / Cp (4) When the phosphorus concentration of the raw water sample is completed (57 minutes) )] Where Cp (4) is the coagulant efficiency for four samples and Pt is the target value.

(5) = P (5) -P (5)} / O '(5) When the concentration of phosphorus in the coagulated sample is completed (62 minutes), the coagulant efficiency [Cp 4)], where O '(4) is the injection rate of the second coagulant injected into the site in the four sample sections.

(11) Calculate the secondary coagulant injection rate [O '(5) = {P (5) -Pt} / Cp (5)] injected into the site according to the coagulant efficiency {Cp .

(12) The same shall apply to six samples.

8. The optimal control system 800 according to the eighth embodiment will be described in detail with reference to Figs. 8, 9, 10, 37 and 39 (cycle sections overlap).

When the operation of the optimal control system 800 is started, n samples (n samples: one sample, two samples, ..., n samples, (n + 1) samples, The concentration of coagulant and the concentration of coagulant after the coagulation test are obtained and the coagulant injection rate to be injected into the field is calculated and controlled.

The pretreatment system associated with the optimal control system 800 (FIGS. 1 to 6), as shown briefly in FIG. 8 and FIG. 10, can be used to perform multiple operations of the filtration tank, The total preprocessing time is shortened.

5 Look at the sample. The same shall apply to the next sample.

(1) 5 cycles start before the end of 4 cycle section.

Five samples are fed into the filtration tank and the jester tester (38 min interval) before the filtration tank is washed and in the standby state, and the phosphorus concentration of the filtered sample is measured after the flocculation experiment in the four sample zones. At this time, the supply order may be changed as needed. For example, after the supply of raw water to the filtration tank is completed, raw water may be supplied to the jester trough. In this case, the filling time of the raw water in the filtration tank is shortened.

(2) Filter 5 samples in a filtration tank (38-40 minutes). The coagulant is injected in accordance with the jatester coagulant injection rate {Cj (5) = O (4)} for the 5 samples in the jatester tank (the injection rate is the amount of the coagulant per unit volume and is multiplied by the volume of the jatester tank, ) Start the coagulation experiment. Rapid stirring is performed for 1 minute and constant stirring is performed for 3 minutes. If the raw water sample is filtered to some extent during the coagulation experiment, the sample concentration before the coagulation experiment is measured and the measurement of the concentration before the coagulation experiment is started (41 minutes). After the analysis (measurement) of the filtered raw water sample is started, the filter is washed and waited (41, 42 minutes). After completion of the experiment by the jatester group, the coagulated sample is transferred to the filtration tank through the transfer pipe (43 minutes) and the filtration of the coagulated sample is started (43 minutes). After the transfer is complete, clean the jest tester and wait (43-47 minutes).

(3) The phosphorus concentration of the raw water sample is measured {P (5)} (45 minutes).

(4) If the filtered water of the coagulated sample is collected to some degree, after the coagulation experiment, the filtered sample is inhaled and measurement of the phosphorus concentration is started after the coagulation experiment (46 minutes). After the agglomeration experiment, start the measurement of the filtered sample. Wash the filter and wait (46-47 minutes).

(5) = P (5) -Pt} / Cp (4) When the phosphorus concentration of the raw water sample is completed (45 minutes), the primary coagulant injection rate [O )], Where Cp (4) is the coagulant efficiency for four samples.

(5) = {P (5) -P '(5)} / O (5) When the concentration of phosphorus in the coagulated sample is completed (50 minutes) 4)], where O (4) is the primary coagulant injection rate injected into the site at four sample intervals.

(11) Calculate the secondary coagulant injection rate [O '(5) = {P (5) -Pt} / Cp (5)] injected into the site according to the coagulant efficiency {Cp (Pt is the target value).

(12) The same shall apply to six samples.

9. The optimum control system 900 according to the ninth embodiment will be described in detail with reference to Figs. 8, 36, and 38 (when cycle sections overlap).

When the operation of the optimal control system 900 is started, n samples (n samples: one sample, two samples, ..., n samples, (n + 1) samples, The concentration of coagulant and the concentration of coagulant after the coagulation test are obtained and the coagulant injection rate to be injected into the field is calculated and controlled.

The pretreatment system (FIGS. 1 to 6) associated with the optimal control system 900 is operated in a redundant manner in each of the filtration tank, the measuring device, and the jester trough in various sections as shown in FIG. 8, The total preprocessing time is shortened.

Let us examine each n sample. The same shall apply to the next sample.

(n-1) cycle, the n cycle starts.

For each n sample, determine the concentration {P (n)} before the coagulation experiment.

If P (n) is not greater than Pt, the primary coagulant injection rate {O (n)} injected into the site is the minimum injection rate.

When P (n) is larger than Pt, O (n) is obtained from the relationship O (n) = {P (n) -Pt} / Cp (n-1).

When O (n) is not greater than the minimum injection rate, O (n) is the minimum injection rate.

O (n) is the value obtained from the relational expression O (n) = {P (n) -Pt} / Cp (n-1) when O (n) is larger than the minimum injection rate, to be.

The coagulant is injected according to the injection rate {Cj (n)} of the jatester coagulant for each n sample and the concentration {P '(n)} is obtained for each n sample after the coagulation experiment.

When P (n) is not greater than Pt, O '(n) is the minimum injection rate.

Cp (n) is calculated using the initial coagulant efficiency or the coagulant efficiency (eg, Cp (n-1)) before P (n) is greater than P ' Value.

(N) = {P (n) - P '(n)} / Cj (n) where P (n) is greater than Pt and P (n) Or a value obtained by using the relational expression.

O (n) = (P (n) -Pt) / Cp (n) is obtained by using the relational expression O '(n).

O '(n) is the minimum injection rate when O' (n) is not greater than the minimum injection rate.

10. The optimal control system 1000 according to the tenth embodiment will be described in detail with reference to Figs. 8, 37, and 39 (when cycle sections overlap).

When the operation of the optimum control system 1000 is started, n samples (each of n samples: one sample, two samples, ..., n samples, (n + 1) samples, The concentration of coagulant and the concentration of coagulant after the coagulation test are obtained and the coagulant injection rate to be injected into the field is calculated and controlled.

The pretreatment system (Figs. 1-6) associated with the optimal control system 1000 filters and rinses the raw water sample in the filtration tank (corresponding to the inflow filtration tank or the inflow water tank and the filtrate tank) of the pretreatment unit The flocculated sample is then filtered and washed; Measuring the phosphorus concentration of the raw water sample in the measuring device, and then measuring the phosphorus concentration of the flocculating sample; It is coagulated and washed in jatester tank. Since the operation (operation) of the filtration tank, the measuring device and the jester tester are repeatedly performed in various sections, the entire pre-treatment time is shortened.

Let us examine each n sample. The same shall apply to the next sample.

n cycle starts before the (n-1) cycle interval ends.

For each n sample, determine the concentration {P (n)} before the coagulation experiment.

When P (n) is not greater than Pt, O (n) is the minimum injection rate.

When P (n) is larger than Pt, O (n) is obtained from the relationship O (n) = {P (n) -Pt} / Cp (n-1).

When O (n) is not greater than the minimum injection rate, O (n) is the minimum injection rate.

O (n) is the value obtained from the relational expression O (n) = {P (n) -Pt} / Cp (n-1) when O (n) is larger than the minimum injection rate, to be.

For each n sample, the coagulant was injected before the concentration {P (n)} before the coagulation experiment according to the injection rate {Cj (n)} of the coagulant coagulant, The concentration {P '(n)} is obtained.

When P (n) is not greater than Pt, O '(n) is the minimum injection rate.

Cp (n) is calculated using the initial coagulant efficiency or the coagulant efficiency (eg, Cp (n-1)) before P (n) is greater than P ' Value.

(N) = {P (n) - P '(n)} / Cj (n) where P (n) is greater than Pt and P (n) Or a value obtained by using the relational expression.

O (n) = (P (n) -Pt) / Cp (n) is obtained by using the relational expression O '(n).

O '(n) is the minimum injection rate when O' (n) is not greater than the secondary minimum injection rate.

O '(n) is the value obtained from the relation O' (n) = {P (n) -Pt} / Cp (n) when O '(n) is larger than the second minimum injection rate Respectively.

11. Embodiment 11 is an optimal control system that can be implemented by variously modifying the embodiment 9 and the embodiment 10 in each item.

(1) Concentration concentration {P (n)} for each n sample is the phosphorus concentration measured before aggregation for each n sample or the value obtained by using the measured value.

(2) The target value {Pt} is a phosphorus concentration target value of the discharged water or a value obtained by using the target value.

(3) When the primary coagulant injection rate {O (n)} is the minimum injection rate, O (n) can be obtained using the minimum injection rate and the minimum injection rate and the previous injection rate { (n-1), O '(n-1)}, or the like; Can be obtained using the previous injection rates. The minimum injection rate can be a set minimum value, a value obtained using the minimum value, or zero.

(4) In the case where P (n) is larger than Pt and there is no substantial difference, O (n) can be made to be the same as when P (n) is not larger than Pt. If P (n) is considerably smaller than Pt or smaller than the predetermined number of times, O (n) becomes 0, and injection may not be performed.

(5) When the second coagulant injection rate {O '(n)} in each n sample section is the minimum injection rate, O' (n) can be obtained using the minimum injection rate, (E.g., O (n-1), O '(n-1), etc.); Can be obtained using the previous injection rates. The minimum injection rate can be a set minimum value, a value obtained using the minimum value, or zero.

(6) The jatester coagulant injection rate {Cj (n)} for each n sample can be obtained using a previous coagulant injection rate such as O (n-1) and O '(n-1).

(7) the coagulant efficiency {Cp (n)} of each n sample in each n sample section is coagulant efficiency {Cp (n-1)} of each (n-1) sample; Cp (n-1) or the like.

(8) The minimum injection rate can be applied to different values, such as the first minimum injection rate and the second minimum injection rate.

12. Example 12 can be modified in the following examples by modifying each item of Example 11.

(1) Example 12a

(when n = 4)

The concentration {P (4)} before coagulation experiment is obtained for four samples.

When P (4) is not greater than Pt, O (4) is the minimum injection rate.

When P (4) is larger than Pt, O (4) is obtained from the relationship O (4) = {P (4) -Pt} / Cp (3).

If O (4) is not greater than the primary minimum injection rate, then O (4) is the minimum injection rate.

O (4) = O (4) = {P (4) -Pt} / Cp (3) where O (4) is greater than the primary minimum injection rate.

The phosphorus concentration {P '(4)} is obtained for the four samples after the agglomeration experiment.

When P (4) is not greater than Pt, O '(4) is the minimum injection rate.

Cp (4) is the value of Cp (3) when P (4) is larger than Pt and P (4) is not larger than P '(4).

(4) = {P (4) - P (4)} / Cj (4) where P (4) is larger than Pt and P (4) Where Cj (4) is obtained from the relationship of Cj (4) = O '(3).

When Cp (4) is obtained, O '(4) is the value obtained by the following equation: O' (4) = {P (4) -Pt} / Cp (4)

If O '(4) is not greater than the secondary minimum injection rate, then O' (4) is the minimum injection rate.

If O '(4) is larger than the second minimum injection rate, then O' (4) is the value obtained from the relationship O '(n) = {P (n) -Pt} / Cp (n).

(2) Example 12b

(when n = 4)

The concentration {P (4)} before coagulation experiment is obtained for four samples.

When P (4) is not greater than Pt, O (4) is the minimum injection rate.

When P (4) is larger than Pt, O (4) is obtained from the relationship O (4) = {P (4) -Pt} / Cp (3).

If O (4) is not greater than the primary minimum injection rate, then O (4) is the minimum injection rate.

When O (4) is larger than the first minimum injection rate, O (4) is the value obtained from the relationship O (4) = {P (4) -Pt} / Cp (3).

The phosphorus concentration {P '(4)} is obtained for the four samples after the agglomeration experiment.

If P (4) is not greater than Pt, O '(4) is the minimum injection rate.

If P (4) is larger than Pt and P (4) is not larger than P (4), Cp (4) becomes Cp (3).

(4) = {P (4) -P '(4)} / Cj (4) where P (4) is greater than Pt and P (4) Where Cj (4) is obtained from the relationship of Cj (4) = O (3).

When Cp (4) is obtained, O '(4) is the value obtained by the following equation: O' (4) = {P (4) -Pt} / Cp (4)

If O '(4) is not greater than the secondary minimum injection rate, then O' (4) is the minimum injection rate.

When O '(4) is larger than the second-order minimum injection rate, O' (4) is the value obtained from the relation O '(4) = {P (4) -Pt} / Cp (4).

(3) Example 12c

Example 3 (when n = 5)

The concentration {P (5)} before coagulation experiment is obtained for 5 samples.

O (5) is obtained from the relationship O (5) = {P (5) -Pt} / Cp (4).

The concentration of phosphorus {P '(5)} is obtained for five samples after the agglomeration experiment.

Cp (5) is the value obtained from the relationship of Cp (5) = {P (5) -P '(5)} / O' (4)

When Cp (5) is obtained, O '(5) is a value obtained by the following equation: O' (5) = {P (5) -Pt} / Cp (5)

(4) Example 12d

(when n = 5)

The concentration {P (5)} before coagulation experiment is obtained for 5 samples.

O (5) is obtained from the relationship O (5) = {P (5) -Pt} / Cp (4).

The concentration of phosphorus {P '(5)} is obtained for five samples after the agglomeration experiment.

Cp (5) is the value obtained from the relationship of Cp (5) = {P (5) -P '(5)} / O (4)

When Cp (5) is obtained, O '(5) is a value obtained by the following equation: O' (5) = {P (5) -Pt} / Cp (5)

13. Example 13 is an optimal control system implemented as follows.

The initial values Cp (0), O '(0), Pt, and the like are set in advance.

(1) = P (1) -Pt} / Cp (0), P (1), Cp (1) = { (1)} / O '(0), O' (1) = {P (1) -Pt} / Cp (1).

(2) -P (2) -P (2) = P (2) - P (2) (2)} / O '(1), O' (2) = {P (2) -Pt} / Cp (2).

(N) = P (n) -Pt} / Cp (n-1), P '(n) and Cp (n) for each n samples ) = {P (n) -P '(n)} / O' (n-1) and O '(n) = {P (n) -Pt} / Cp (n).

14. Example 14 is an optimal control system implemented as follows.

Initial values O (0), Cp (0), Pt, and the like are set in advance.

(1) = P (1) -Pt} / Cp (0), P '(1), Cp (1) = { (1)} / O (0), O '(1) = {P (1) -Pt} / Cp (1).

P (2) = P (2) -Pt} / Cp (1), P '(2) (2)} / O (1), O '(2) = {P (2) -Pt} / Cp (2).

(N) = P (n) -Pt} / Cp (n-1), P '(n) and Cp (n) for each n samples = P (n) -P '(n)} / Cj (n), Cj (n) = O .

15. Experimental examples will be described in detail.

FIG. 40 shows operational data for an experimental example of an optimum control system including a preprocessing system.

FIG. 41 is a graph showing the raw water sample concentration, the coagulated sample concentration, the experimental example T-P (one hour measurement period), the comparative example T-P, the primary and secondary coagulant injection rates, and the fixed injection rate of the operation data.

According to FIG. 42, it can be seen that the flocculant efficiency fluctuates in inverse proportion to real time in accordance with the change in the phosphorus concentration of the influent water. In other words, as the phosphorus concentration of the influent water changes, the contaminants, such as suspended substances reacting with the flocculant, are also changed. Therefore, rather than simply injecting the flocculant in proportion to the phosphorus concentration change, the actual flocculant efficiency of the influent water is measured , It becomes possible to inject the coagulant injection amount in accordance with the water quality characteristic of the present inflow water.

According to FIG. 43, it can be seen that the coagulant injection rate fluctuates in inverse proportion to the real time according to the change of the coagulant efficiency. FIG. 44 shows that the coagulant injection rate varies in proportion to the real time according to the change of the phosphorus concentration of the raw water Able to know. In addition, the variation of the coagulant injection rate is larger than the variation of the phosphorus concentration of the influent water because the coagulant efficiency is reflected. That is, as the phosphorus concentration increases, the coagulant efficiency is lowered, so that the coagulant injection amount is further increased and the coagulant efficiency is increased when the phosphorus concentration is lowered. In other words, it can be seen that the variation width of the coagulant injection rate is larger than the variation width of the phosphorus concentration. The coagulant injection rate when both the phosphorus concentration and the flocculant efficiency are considered is larger or smaller than the coagulant injection rate when only the phosphorus concentration is taken into consideration so that the coagulant injection rate is efficiently controlled and the target value of the water quality Can be maintained.

FIG. 45 shows changes in phosphorus concentration, changes in flocculant efficiency, changes in the field coagulant injection rate, and changes in T-P. It can be seen that the target value of the water quality is stably maintained below the phosphorus concentration value set at 0.5 ppm set in the experimental example.

FIG. 46 shows the experimental results in which the coagulant injection rate is varied and the comparison example in which the coagulant injection rates are fixed. In the comparative example in which the coagulant injection rate is fixed, the TP of the discharged water is kept low when the phosphorus concentration of the influent raw water is low, but the TP of the discharged water exceeds the target value when the phosphorus concentration is high, In the experimental example of controlling, it can be confirmed that the coagulant injection rate is changed according to the change of the phosphorus concentration of the influent water, and the TP is stably maintained.

Even if the measurement period is slightly increased compared with the experimental example, the error may be reduced in the actual field. That is, when the measurement value is smaller than the actual value, and the magnitude of the negative error is small or the frequency of the error is small, as in the wastewater treatment apparatus schematically shown in FIG. 7, There is a settling tank for 10 to 20 minutes of reaction (stay) in the water tank or a settling tank for about 3 hours in the case of a structure without a total facility, so that when the coagulant injection on the site is determined to be a relatively short period, The water quality is kept below the target value.

The present invention not only shortens the time of one cycle so that the recent measured value of the phosphorus concentration becomes an approximate value with little difference from the actual value of the field but also the concentration after the aggregation experiment necessary for the calculation of the flocculant efficiency within the measurement period of such phosphorus concentration The present invention also provides an optimum control system and method that can optimize the amount of coagulant injected by controlling the coagulant injection rate twice in one cycle using such a pretreatment system. That is, it is possible to determine the coagulant injection rate to be firstly injected into the site according to the phosphorus concentration measured in one cycle section, and to determine the coagulant injection rate to be injected in the second site according to the calculated efficiency of the coagulant, It is possible to optimize the amount of coagulant injected in real time.

Further, since the pH value affects the flocculation experiment, it is necessary to maintain the pH value appropriately during the flocculation experiment. The optimal control system installed at the wastewater treatment plant is used to control the flocculation rate by receiving the sewage inflow, pH, temperature, alkalinity, and discharge TMS (TP) information.

100, 200, 300, 400, 500: Pretreatment system
101, 201, 301, 401, 501: a pre-
110, 210: inflow filtration tank 110a, 210a: inflow section 110b, 210b:
310, 410, 510, 610: inlet water tank
312, 412, 512, 612: filtration tank
111, 211, 311, 411, 511, 611:
120, 220, 320, 420, 520, 620: jitter tester
155, 255, 355, 455, 555, 655:
155a, 255a, 355a, 455a, 555a, 655a:
115, 215, 315, 415, 515, 615: raw water supply valve
125, 225, 325, 425, 525, 525:
133, 233, 333, 433, 533:
122, 222, 322, 422, 522: a transfer valve of the transfer pipe
155, 255, 355, 455, 555:
156, 256, 356, 456, 556:
344, 444: Supply pipes 366, 466: Supply valves for supply pipes
357, 457: a supply pipe inlet 358, 458: a supply pipe outlet
121: stirrer
124, 224, 324, 424, 524, 624: coagulant (medicine) tank
123, 223, 323, 423, 523, 623: coagulant supply valve
123a, 223a, 323a, 423a, 523a, 623a:
565, 665:
The washing water supply valve 141 is connected to the water supply valve 141, 143, 241, 243, 341, 342, 343, 441, 442, 443, 541, 542, 641,
The washing water supply pipe 141a, 143a, 241a, 243a, 341a, 342a, 343a, 441a, 442a, 443a, 541a, 542a, 641a,
517, 518, 519, 616, 617, 618, 619: drain valve 517, 518, 519, 516, 517, 518, 619, 619, 617, 618, 619, 116, 117, 129, 216, 217, 229, 316, 317, 318,
160, 260, 360, 460, 560, 660: drain (tube)

Claims (31)

A system for optimally controlling the amount of coagulant injected using n concentration of each n sample in which the incoming raw water is sampled by intervals and concentration of phosphorus after the coagulation test,
The concentration {P (n)} before the agglomeration experiment of each n sample was measured, and the concentration of each n sample in the agglutination experiment was measured according to the jatester coagulant injection rate {Cj (n)} for each n sample A preprocessing unit for injecting the coagulant before the measurement of {P (n)} and measuring the phosphorus concentration {P '(n)} after the coagulation experiment of each n sample;
Calculating a jatestor coagulant injection rate {Cj (n)} for each n sample; The primary coagulant injection rate {O (n)) injected into the field according to the coagulation concentration {P (n)} and the flocculant efficiency {Cp (n-1)} of each n- }; The coagulant efficiency {Cp (n)} of each n sample is calculated using the concentration before the coagulation experiment of each n sample and the concentration {P '(n)} after the coagulation experiment of the coagulation experiment of each of the n samples; (N)} injected into the site according to the concentration {P (n)} before coagulation experiment of each n sample and the coagulant efficiency {Cp (n)} of each n sample And a controller for controlling the amount of flocculant injected.
The method according to claim 1, wherein the jatester coagulant injection rate {Cj (n)} for each of the n samples is calculated according to a second coagulant injection rate {O '(n-1)} of each Wherein the amount of the coagulant injected is controlled to be an optimum amount.
The method according to claim 1, wherein the jatester coagulant injection rate {Cj (n)} for each of the n samples is calculated in accordance with the primary coagulant injection rate {O (n-1)} of each A system for optimally controlling the amount of flocculant injected.
The method according to any one of claims 1, 2, and 3, wherein the coagulant efficiency {Cp (n)} of each n sample is calculated as [concentration before the coagulation experiment { n)}] / the jatesther coagulant injection rate {Cj (n)} for each n sample.
The method of any one of claims 1, 2, and 3, wherein the primary coagulant injection rate {O (n)} of each n sample sections is [ Value (Pt)] / (n-1) sample coagulant efficiency {Cp (n-1)}.
The method according to any one of claims 1, 2, and 3, wherein the second coagulant injection rate {O '(n)} of each n sample sections is [concentration {P (n)} - Target value Pt] / coagulant efficiency {Cp (n)} of each n sample.
delete delete delete delete delete A system for optimally controlling the amount of coagulant injected using n concentration of each n sample in which the incoming raw water is sampled by intervals and concentration of phosphorus after the coagulation test,
The coagulant concentration of each n sample was measured, and the coagulant was injected into the jatester tank using the jatester coagulant injection rate for each of the n samples before the concentration of each n sample was measured before the coagulation experiment. A pretreatment unit for measuring the concentration of phosphorus after the experiment of aggregation of the sample;
Calculating the jatester coagulant injection rate for each n sample; Control the injection rate of primary coagulant injected into the site according to the concentration of each n sample before coagulation; The coagulant efficiency is calculated using the concentration of each n sample before the coagulation experiment and the concentration of the coagulation experiment of each j sample of the n samples; And an operation control unit for controlling the injection rate of the second coagulant injected into the site by using the coagulant efficiency of each of the n samples in each of the n sample sections.
The system of claim 12, wherein the jatester coagulant loading rate for each of the n samples is calculated using the coagulant loading rate injected into the site prior to each n sample section.
delete delete delete delete delete delete delete delete delete [14] The method according to claim 12 or 13, wherein the pretreatment unit injects the coagulant into at least one of the n samples (n = 2 or more) And the flocculant efficiency {Cp (n)} of each of the n samples in the section of the sample (n = 2 or more) is calculated.
The method according to claim 23, wherein the preprocessing unit measures the second phosphorus concentration of the sample that has further sampled the influent water instead of performing the coagulation test in each of the n sample sections, and at least one of the n samples (n = (N)} of each of the n sample sections is calculated using the second phosphorus concentration with respect to the second coagulant injection rate {overscore (2)}.
The system according to claim 12 or 13, wherein each of the n samples is two samples simultaneously or sequentially sampled in each section.
A method for optimally controlling the amount of coagulant injected using n concentration of each n sample in which the incoming raw water is sampled by intervals and concentration of phosphorus after the coagulation test,
(a) obtaining concentration {P (n)} before coagulation experiment for each n samples sampled after each (n-1) sample interval;
(b) calculating the primary coagulant injection rate {O (n)} injected into the site in a relationship of O (n) = {P (n) -Pt} / Cp (n-1);
(c) The coagulant is injected according to the injection rate {O '(n-1)} of the second coagulant injected into the site of each (n-1) sample section, P '(n)};
(d) the flocculant efficiency {Cp (n)} is calculated from a relational expression of Cp (n) = {P (n) - P '(n)} / O'(n-1);
(n) = {P (n) -Pt} / Cp (n)} of the second coagulant injection rate {O ' The method comprising:
A method for optimally controlling the amount of coagulant injected using n concentration of each n sample in which the incoming raw water is sampled by intervals and concentration of phosphorus after the coagulation test,
(a) obtaining concentration {P (n)} before coagulation experiment for each n samples sampled before the end of each (n-1) sample interval;
(b) calculating the primary coagulant injection rate {O (n)} injected into the site in a relationship of O (n) = {P (n) -Pt} / Cp (n-1);
(c) The coagulant is injected according to the primary coagulant injection rate {O (n-1)} injected into the site of each (n-1) sample section and the concentration {P '(n)};
(d) the flocculant efficiency {Cp (n)} is calculated from a relational expression of Cp (n) = {P (n) - P '(n)} / O (n-1);
(n) = {P (n) -Pt} / Cp (n)} of the second coagulant injection rate {O ' The method comprising: delete delete delete delete

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