KR101271736B1 - Sludge treatment system to adjust the medication dosage depending on the concentration of the sludge - Google Patents

Abstract

PURPOSE: A sludge treatment system is provided to reduce the amount of used cohesion medicines, and to reduce incineration costs by lowering the water content of dehydrated sludge, thereby eventually reducing an amount of sludge buried. CONSTITUTION: A sludge treatment system comprises a sludge equalization basin(120), a measurement tub(150), an MLSS(Mixed Liquor Suspended Solid) sensor(180), a rapid reactor(240), and an integrated control panel(220). A first agitator(110) which agitates sludge flowed in for the first time is installed in the sludge equalization basin. A second agitator(170), which agitates the sludge agitated in the previous step and dilution water flows from a dilution water tank for the second time, is installed in the measurement tub. The MLSS sensor measures an MLSS concentration in the sludge which is agitated twice. A third agitator(230), which agitates the sludge agitated for the first time by supplying chemicals, is installed in the rapid reactor. A chemical injection controller, which controls the injected amount of chemicals added into the rapid reactor by the concentration of MLSS measured above, is installed in the integrated control panel.

Description

SLODGE TREATMENT SYSTEM TO ADJUST THE MEDICATION DOSAGE DEPENDING ON THE CONCENTRATION OF THE SLUDGE}

The present invention relates to a sludge treatment system that adjusts the chemical input amount according to the sludge concentration, and more particularly, using a measurement system in real time to measure the concentration of sludge before dehydration generated in the water treatment process, such as water treatment, wastewater treatment and sewage treatment To reduce the amount of coagulant used by automatically adjusting the coagulant drug used for dewatering the sludge, and further reduce the incineration cost by lowering the water content of the dewatered sludge and ultimately reclaiming the sludge. The present invention relates to a drug injection control system by measuring sludge concentrations that can help to reduce the amount of water, thereby minimizing the impact on the ecosystem.

In general, water treatment can be classified into three categories: water treatment, sewage treatment, and wastewater treatment. The water purification treatment produces drinking water from the beginning through the chemical agglomeration, and the waste water treatment utilizes the chemical agglomeration as a preliminary stage of biological treatment, and the sewage treatment has recently been used in the total phosphorus treatment facility to protect the water quality of the four rivers. I use it. In all three fields, sludge, which is a by-product of water treatment, is inevitably generated and needs treatment. The sludge treatment method uses a method of increasing the dehydration capacity by adding flocculating chemicals. The reason is that when dehydration is not performed without the coagulant drug, the dehydration is not performed well, and the water content of the dewatered sludge is high, so the amount of dewatered sludge to be disposed of is greatly increased, which increases the waste treatment cost.

As such, drugs are inevitably used in all areas of water treatment, and people's expectation for water quality is increasing day by day, and the use of drugs is also increasing. Some drugs remain ecologically and environmentally troubled as they remain downstream without being reacted. Is likely to cause an increase. Therefore, even though it is necessary to minimize the amount of chemicals to reduce the overall cost of the country as well as to prevent adverse effects on the eco-environment, the technology for reducing the use of chemicals is not applied to the field, which is pointed out as a problem every year.

Currently, most of the drugs are injected in the field, regardless of the sludge properties, by the intuition of the on-site manager or by following the injection of the previous worker. In fact, over 40% of drugs are being administered in an overdose. Most of the drug injection control devices developed so far are chemical injection control devices that automatically inject disinfecting chemicals in water purification plants and water distribution, and most of them have a function of changing drug injection in response to changes in treatment flow rate.

Some investigators have attempted to change the dose of drug by using the SS (suspended solids) concentration of the dehydrated liquid after the flocculation reaction, but the concentration of fresh sludge is measured by measuring the sample after the reaction time of the flocculation reaction. There is a disadvantage that can not reflect, and SS of dehydration amount does not correlate with the overdosed drug injection is not a suitable alternative to prevent overdose of the drug. As such, in the field where the characteristics of the influent water to be treated change every moment, simply changing the treatment flow rate by detecting only the change in the treatment flow rate reduces the amount of the chemical used in order to reduce the amount of the chemical used, and the flow rate of the treatment flow is reduced. Rather, there is an inevitable disadvantage of increasing drug usage.

Referring to (a) and (b) of Figure 1 shows the change in the drug consumption according to the change in the concentration of sludge in the sewage treatment plant. Looking at Figure 1, both types of sludge can be seen that the chemical injection amount changes in proportion to the sludge concentration, it shows that the chemical injection amount can be adjusted to the sludge concentration. (a) shows the dosage of the drug according to the excess sludge concentration, (b) shows the dosage of the drug according to the raw sludge concentration. The excess sludge refers to the remaining sludge of the transport sludge recycled in the sludge produced by the sedimentation in the final sedimentation basin to remove the final sludge, also called excess sludge. The raw sludge is freshly taken out of the sedimentation basin, and the decomposition has not yet proceeded, that is, the sediment or suspended matter seen in the initial sedimentation basin, and refers to sludge that is not digested.

In addition, the wastewater and sewage treatment process includes the first step of removing the suspended solids from the wastewater from the home or industrial site through the first settling process, and the supernatant filtered through the settling process receives oxygen from the aeration tank and is active in aerobic state. It is composed of the stage of decomposition using sludge and re-separation of the supernatant water from the secondary sedimentation tank after this process.If necessary, the supernatant water passed through the tertiary sedimentation or filter paper is discharged to the stream. .

In the sewage treatment process, the sediment accumulated on the bottom of the primary, secondary and tertiary sedimentation tanks is collected and discharged using a sludge collector, and is finally landfilled through dehydration and incineration. However, a large amount of flocculant is used in the dehydration process to reduce the water content. Currently, there is no standard and technology to control and inject coagulant drugs in all domestic and foreign wastewater treatment plants. This is being used excessively. This not only leads to an increase in the cost of operating sewage treatment, but also may ultimately adversely affect the ecosystem, and thus, it is necessary to develop a technology for providing a sewage treatment apparatus that can minimize the ecosystem.

The present invention has been made to improve the prior art as described above, by measuring the concentration of sludge before dehydration generated in the water treatment process, such as water treatment, wastewater treatment and sewage treatment in real time using a measurement system, It automatically reduces the amount of flocculating chemicals used for dehydration to reduce the amount of flocculating chemicals, and reduces the incineration cost and ultimately reduces the amount of sludge that is landfilled. It is to provide a drug injection control system by measuring sludge concentration that can minimize the impact on the ecosystem by helping.

In order to achieve the above object and to solve the problems of the prior art, the sludge treatment system for adjusting the chemical input amount according to the sludge concentration according to an embodiment of the present invention, a first stirrer to first stir the incoming sludge is installed Sludge equalization tank; A measuring tank provided with a second stirrer for secondly stirring the first stirred sludge flowing from the sludge equalization tank and the dilution water flowing from the dilution tank; A Mixed Liquer Suspended Solid (MLSS) sensor for measuring the MLSS concentration of the second stirred sludge in the measuring tank; A rapid reaction tank provided with a third stirrer for supplying a chemical to the first stirred sludge introduced from the sludge equalization tank and stirring each other; And an integrated control panel in which a chemical input controller is installed to control the input amount of the chemical input to the rapid reaction tank according to the measured MLSS concentration.

In addition, the sludge treatment system for adjusting the chemical input amount according to the sludge concentration according to an embodiment of the present invention, including one or more opening and closing holes in the opening and closing of each opening and closing hole by the eco-valve plate according to the moving direction of the rail A first eco valve for controlling the amount of sludge introduced into the measuring tank from the sludge equalization tank; A second eco valve including at least one opening and closing hole and controlling the amount of dilution water flowing from the dilution tank into the measurement tank according to the opening and closing of each opening and closing hole by the eco valve plate according to the moving direction of the rail; A third eco valve including at least one opening and closing hole and controlling the amount of sludge introduced into the rapid reaction tank from the sludge equalization tank according to the opening and closing of each opening and closing hole by the eco valve plate according to the moving direction of the rail; And an ecovalve controller installed in the integrated control panel and controlling opening and closing of the opening and closing holes of the first ecovalve, the second ecovalve, and the third ecovalve according to the measured MLSS concentration. do.

In addition, in the sludge treatment system for adjusting the chemical input amount according to the sludge concentration according to an embodiment of the present invention, the sludge equalization tank and the measuring tank is opened or closed with each other through the first eco-valve, the measuring tank and The dilution tank is opened or closed with each other through the second eco valve, the sludge equalization tank and the rapid reaction tank are opened or closed with each other through the third eco valve, and the chemical injection controller and the eco valve controller are It is characterized in that it is installed in one integrated control panel.

In addition, in the sludge treatment system for adjusting the chemical input amount according to the sludge concentration according to an embodiment of the present invention, the eco-valve controller is a memory that records the maximum measured concentration is selected according to the performance of the MLSS sensor (predetermined) When the concentration of the secondary agitation sludge measured in the measuring tank exceeds the maximum measurement concentration, the secondary agitation sludge is controlled by controlling the opening or closing operation of the first eco valve and the second eco valve. It characterized in that the control to control the concentration of less than the maximum measured concentration.

In addition, in the sludge treatment system for adjusting the drug input amount according to the sludge concentration according to an embodiment of the present invention, the drug input controller is at least one sludge identifier and at least one MLSS concentration and the drug input amount corresponding to each sludge identifier Maintain the recorded MLSS concentration-drug dosage table, and if the concentration of the secondary stirred sludge of the measuring tank measured by the MLSS sensor is the first concentration, the first chemical dose corresponding to the first concentration is the MLSS concentration. It is characterized by controlling the input amount of the drug to be injected into the rapid reaction tank by reading through the chemical dose table.

According to the sludge treatment system for adjusting the chemical input amount according to the sludge concentration of the present invention, the concentration of the sludge before dehydration generated in the water treatment process, such as water treatment, wastewater treatment and sewage treatment is measured in real time using a measurement system, The amount of coagulant used is automatically reduced by automatically adjusting the coagulated drug used for dewatering the sludge, and in addition, the incineration cost is reduced by lowering the water content of the dewatered sludge, and the amount of sludge ultimately landfilled. By reducing the cost of water, the national government can reduce the cost of water treatment.

In addition, according to the sludge treatment system for adjusting the chemical input amount according to the sludge concentration according to the present invention, it is possible to reduce the amount of the flocculant used to obtain the effect of minimizing the effect on the treated water discharged to the ecosystem.

In addition, in order to minimize the use of expensive metering pump, by devising an eco-valve indicating a constant flow rate according to the size of the hole at a constant water level difference, it is possible to obtain an effect that can significantly reduce the amount of the flocculant used at low cost.

1 is a graph showing the change in chemical consumption according to the sludge concentration of the sewage treatment plant.
2 is a first perspective view showing the configuration of a sludge treatment system according to an embodiment of the present invention.
3 is a second perspective view showing the configuration of the sludge treatment system according to an embodiment of the present invention.
4 is a plan view showing the configuration of a sludge treatment system according to an embodiment of the present invention.
5 is a view showing the configuration of the eco valve of the sludge treatment system according to an embodiment of the present invention.
6 is a flow chart showing the flow of the sludge treatment process of the sludge treatment system according to an embodiment of the present invention.
7 is a diagram illustrating a MLSS concentration-drug dosage table according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Sludge treatment system 100 for adjusting the amount of chemical input according to the sludge concentration according to an embodiment of the present invention, the water treatment chemicals (a) technology that can be applied to sewage treatment plants, wastewater treatment plants as well as water purification plants, livestock manure, and food treatment facilities ( The effect of reducing the amount of coagulant) can be obtained. Hereinafter, the 'water treatment drug (coagulant)' will be described as 'drug'. Sensor technology for measuring most suspended solids (MLSS, mixed liquor suspended solids) is implemented as imported products, and there is no technology for measuring high concentration sludge in foreign countries. Therefore, taking into account the fact that the suspended solids (MLSS) has a proportional correlation with the amount of use of the drug, the drug injection control system 100 allows a beginner who handles the drug to easily inject an optimal amount of the drug. It is about. In addition, the sensor for measuring the concentration of the suspended solids to be described as a measuring sensor (180).

2, 3, and 4 are a first perspective view, a second perspective view, and a plan view showing the components of the sludge treatment system for adjusting the chemical input amount according to the sludge concentration according to an embodiment of the present invention. 2, 3, and 4 show the components of the sludge treatment system viewed from various angles. Sludge treatment system for adjusting the chemical input amount according to the sludge concentration according to an embodiment of the present invention will be described by abbreviating as 'sludge treatment system'.

The sludge treatment system 100 includes a first stirrer 110, a sludge equalization tank 120, a first sludge outlet 121, a first sludge lower outlet 122, a first lower valve 123, and a first wear 124, inflow control pump 125, sludge inlet pipe 126, sludge inlet valve 127, sludge inlet pump valve 128, the first eco valve 130, the measuring tank 150, the second sludge Outlet 151, second sludge lower outlet 152, second lower valve 153, second stirrer 170, MLSS sensor 180, second eco valve 190, dilution tank 200, dilution Water level control wear 210, dilution water inlet water pipe 211, dilution water outlet 212, dilution tank bottom outlet 213, dilution tank bottom valve 214, dilution water inlet pump 215, integrated control panel 220, the third stirrer 230, rapid reaction tank 240, the third sludge outlet 241, the third eco valve 250, chemical supply metering pump 260, chemical supply pipe 261, dehydrator inlet pump 270, and a dehydrator inlet pipe 271, a dehydrator inlet valve 272, 3 and a lower sludge outlet (273), the third lower valve 274, and the dehydrator inlet pump valve (275).

In the sludge equalization tank 120, the sludge supplied through the inflow control pump 125 may be transferred to the sludge inlet pipe 126 and supplied into the sludge equalization tank 120. The first sludge outlet 121 may be installed on the rear surface of the sludge equalization tank 120. The first sludge outlet 121 may discharge the sludge to the outside when the sludge accommodated in the sludge equalization tank 120 overflows through the first wear 124. The sludge accommodated in the sludge equalization tank 120 may be first stirred through the first stirrer 110. A first eco valve 130 may be installed between the sludge equalization tank 120 and the measurement tank 150, and the first stirred sludge may be sludge equalization tank 120 through the first eco valve 130. Can be supplied from the measuring tank 150.

One side of the measuring tank 150 may be installed dilution tank (200). The dilution water 200 may be transferred to the dilution water inflow pipe 211 through the dilution water inflow pump 215 and supplied into the dilution water tank 200. Dilution water outlet 212 may be installed on one side of the dilution tank (200). The dilution water outlet 212 may discharge the dilution water to the outside when the dilution water overflowed in the dilution water tank 200 flows through the dilution water level adjusting wear 210. A second eco valve 190 may be installed between the dilution water tank 200 and the measurement tank 150, and the dilution water is measured from the dilution water tank 200 through the second eco valve 190. Can be supplied.

The second stirrer 170 may be installed in the measurement tank 150. The first stirred sludge and the dilution water supplied into the measuring tank 150 may be stirred and mixed through the second stirrer 170 to generate a second stirred sludge. The MLSS sensor 180 may be installed at one upper end of the measuring tank 150. The MLSS sensor 180 may measure the concentration of the second stirred sludge. When the secondary stirred sludge overflows in the measuring tank 150, the secondary stirred sludge may be discharged to the outside through the second sludge outlet 151.

The sludge and the medicine may be accommodated in the rapid reaction tank 240. The third sludge outlet 241 may be installed at the rear surface of the rapid reaction tank 240. The third sludge outlet 241 may discharge the sludge to the outside when the sludge accommodated in the rapid reaction tank 240 overflows. The sludge accommodated in the rapid reactor 240 may be stirred through the third stirrer 230.

A third eco valve 250 may be installed between the rapid reaction tank 240 and the sludge equalization tank 120, and the sludge may be installed from the sludge equalization tank 120 through the third eco valve 250. 240). In addition to the rapid reaction tank 240, the drug supply metering pump 260 may be installed. Rapid reaction tank 240 and the drug supply metering pump 260 may be connected through the drug supply pipe (261). In addition, a dehydrator inlet pump 270 may be installed at the bottom of the rapid reactor 240. The sludge accommodated in the rapid reaction tank 240 may be supplied to the dehydrator through a dehydrator inlet pipe 271 connected to the dehydrator inlet pump 270.

As described above, the sludge may be supplied to the inside of the sludge equalization tank 120 through an inflow control pump 125. At this time, the sludge accommodated in the rapid reaction tank 240 may be supplied from the sludge equalization tank 120 through the third eco-valve 250, the chemical supply pipe 261 through the chemical supply metering pump 260 Is transferred to the rapid reaction tank 240 may be supplied into the.

The sludge accommodated in the sludge equalization tank 120 may be stirred through the first stirrer 110 installed at the top. When a part of the sludge overflows during the stirring process, the sludge may be discharged through the first sludge outlet 121. The sludge may be supplied into the measuring tank 150 through the first eco valve 130. The first eco valve 130 will be described in detail with reference to FIGS. 2, 3, and 4.

As the sludge is introduced, the measuring tank 150 may be uniformly mixed with the second stirrer 170 in order to minimize the error caused by the rapid change in the suspended matter (MLSS) concentration. Between the measuring tank 150 and the sludge equalization tank 120, a first eco valve 130, a second eco valve 190 is installed between the measuring tank 150 and the dilution water tank 200, the sludge and the The dilution water can be operated by the integrated control panel 220 to be supplied at a predetermined flow rate.

The second stirrer 170 may be installed at an upper end of the measuring tank 150. Through the second stirrer 170, the sludge and the dilution water may be stirred and diluted. After the stirring process, a portion of the sludge and the dilution water may be discharged through the second sludge outlet 151. The MLSS sensor 180 may be installed at one upper end of the measuring tank 150. The concentration of the sludge accommodated in the measuring tank 150 may be measured through the MLSS sensor 180. The measured concentration data may be transmitted to the integrated control panel 220. The second eco valve 190 may be installed at the other side of the measuring tank 150. The second eco valve 190 may be controlled by the value of the concentration data. The dilution tank 200 may be supplied with constant or treated plant effluent. The constant or treatment plant effluent may be used as dilution water. Dilution water level control wear 210 may be installed on the upper end of the dilution tank (200).

The dilution water level adjusting wear 210 may control the level of the dilution water accommodated in the dilution water tank 200 and discharge the dilution water to the outside through the dilution water outlet 212. The dilution water is automatically introduced into the measuring tank 150 at the dilution rate by the driver's setting or automatic setting, and at the same time, an appropriate amount of the sludge flows into the measuring tank 150 from the sludge equalization tank 120 to measure the sludge concentration. Can be. The sludge and the medicine may be supplied into the rapid reaction tank 240 as described above. The chemical input amount may be controlled by an operating condition (optimum chemical injection amount) input through the integrated control panel 220.

The third stirrer 230 may be installed at an upper end of the rapid reaction tank 240. The third stirrer 230 may cause turbulence in the rapid reaction tank 240 to allow the sludge and the chemical to react rapidly. The other side of the rapid reaction tank 240 may be provided with a chemical supply metering pump 260 through the chemical supply pipe 261. The medicine supply metering pump 260 may supply the medicine through the medicine supply pipe 261.

The drug may aggregate the sludge and foreign substances generated in various water treatment processes, including sewage treatment. The dehydrator inlet pump 270 may be connected to the dehydrator through the dehydrator inlet pipe 271 at the lower end of the rapid reaction tank 240. The sludge which has been reacted with the chemical to the dehydrator inlet pipe 271 may be supplied to the dehydrator.

Integrated control panel 220 is the first stirrer 110, the first eco valve 130, the second stirrer 170, MLSS sensor 180, the second eco valve 190, the inflow control pump 125, dilution The water inflow pump 215, the third stirrer 230, the third eco valve 250, the chemical supply metering pump 260, and the dehydrator inflow pump 270 may be respectively controlled. Integrated control panel 220 may be controlled by automatic and manual operation. When the integrated control panel 220 is set as an automatic operation condition, the concentration of the sludge and foreign substances generated in various water treatment processes including the sewage treatment may be measured by the MLSS sensor 180 to automatically control the appropriate amount of drug injection concentration.

Based on the concentration measured in the measuring tank 150 and the flow rate of the sludge supplied from the sludge equalization tank 120 to the rapid reaction tank 240, the amount of chemicals used in the rapid reaction tank 240 to the optimum conditions Can be controlled to be supplied. In the autonomous driving conditions, the concentration may be measured for a predetermined time (minutes to several tens of minutes) to collect an average concentration, and the chemicals may be supplied to the rapid reaction tank 240 by automatically determining the increase and decrease of the use of the chemical against the concentration change.

In the manual operating conditions, the operator can change the operating conditions of the site by changing the operating condition step and directly checking the concentration and aggregation of sludge, foreign substances and chemicals. At this time, the measurement concentration and the operating conditions can be checked by the operator through the display device.

5 is a view showing the configuration of the eco valve of the sludge treatment system according to an embodiment of the present invention.

Referring to FIGS. 2, 3, and 4, in the eco valve, a first eco valve 130 is installed between the sludge equalization tank 120 and the measurement tank 150, and the measurement tank 150 and the dilution water tank ( The second eco valve 190 may be installed between the 200, and the third eco valve 250 may be installed between the sludge equalization tank 120 and the rapid reaction tank 240. The structures and functions of the first eco valve 130, the second eco valve 190, and the third eco valve 250 are the same. In FIG. 5, the first eco valve 130 will be described. The first eco valve 130 is a rail driving motor 131, a driving pulley 132, a rail 133, a position sensor 134, a sensor kicker 135, a roller 136, a driven pulley 137, and a belt. 138, an LM guide 139, a first opening and closing hole 140, a second opening and closing hole 141, and an eco valve plate 142.

Referring back to FIGS. 2, 3, and 4, the first eco valve 130 may be controlled according to the concentration of the suspended matter (SSSS) measured by the MLSS sensor 180. When the rail driving motor 131 is driven, the driving pulley 132 is rotated, and a driving force is transmitted to the belt 138 to reciprocate in the horizontal direction, and the driven pulley 137 connected to the end of the belt 138 is rotated. You can. When the rail driving motor 131 is rotated in the 'a' direction, the rail 133 is moved in the 'd' direction, and the position sensor 134 mounted on the rail 133 is moved to one or more sensor kicker 135 positions. Can be moved. In this case, the roller 136 located on the sensor kicker 135 may move to the upper portion of the rail 133, and the eco valve plate 142 mounted below the roller 136 may move in the 'e' direction.

When the eco valve plate 142 is moved in the 'e' direction, the first opening and closing hole 140 and the second opening and closing hole 141 may be switched to 'open'. When set to 'open', the sludge, the dilution water, and the like may move a predetermined flow rate according to the size of the adjacent hole in each of the tanks. The sensor kicker 135 may be mounted as many as the number of the first opening and closing holes 140, and the opening and closing number of the first opening and closing holes 140 may be controlled according to the MLSS concentration measured by the MLSS sensor 180. The size of the opening and closing hole may be manufactured in a predetermined size according to the flow rate of the sludge or dilution water passing through.

The rail 133 is adjacent to the upper surface of the LM guide 139, and can perform a linear reciprocating motion. The ecovalve plate 142 may be moved by neighboring one or more guides formed on one side of the first ecovalve. When the rail driving motor 131 is rotated in the 'b' direction, the rail 133 is moved in the 'c' direction, and the position sensor 134 mounted on the rail 133 is moved to one or more sensor kicker 135 positions. Can be moved. In this case, the roller 136 located on the sensor kicker 135 may move to the lower portion of the rail 133, and the eco valve plate 142 mounted to the lower portion of the roller 136 may move in the 'f' direction. When the eco valve plate 142 is moved in the 'f' direction, the first opening and closing hole 140 and the second opening and closing hole 141 may be switched to 'closed'. When set to 'closed', the sludge and the dilution water, etc. can be blocked from moving to the adjacent tank in each tank.

The position sensor 134 senses the position of the rail 133 and the position of the sensor kicker 135 and is transmitted to the integrated control panel 220, and the eco valve plate 142 can be controlled to be 'open' and 'closed'. have. One or more eco-valve plates 142 are sequentially controlled to be 'open' and 'closed' according to the moving direction of the rail 133 to control the flow amount of the sludge and the dilution water so that the MLSS sensor 180 is an accurate MLSS. It is possible to measure the concentration, thereby obtaining the effect of injecting the optimal drug amount.

6 is a flow chart showing the flow of the sludge treatment process of the sludge treatment system according to an embodiment of the present invention.

Referring to FIG. 6, the LADDER LOGIC mounted motion control controller 300 includes a first stirrer 110, an inflow control pump 125, a first eco valve 130, and a second stirrer at a control device operation test 310. (170), MLSS sensor 180, second eco valve 190, dilution water inlet pump 215, third stirrer 230, third eco valve 250, and dehydrator inlet pump 270 and Test runs can be performed automatically or manually to check for normal operation.

In addition, in the control device operation test 310, the sludge and the dilution water by the inflow control pump 122 and the dilution water inflow pump 215 are introduced, and the first stirrer 110, the second stirrer 170, and the first stirrer are introduced. By operating the stirrer 230, the sludge may be uniformly stabilized in the sludge treatment system 100. In this case, in order to properly set the dilution ratio of the sludge introduced into the measuring tank 150, The eco valve 130 and the second eco valve 190 may be adjusted. In this case, the MLSS sensor 180, the chemical supply metering pump 260, and the dehydrator inflow pump 270 do not operate and the total amount of introduced sludge may be recovered to the sump again.

As a result of the operation test, the sludge inflow amount, the source water output 320 may be displayed to check the operation test results in the control device operation test 310 step. In addition, the sludge inflow amount from the sludge equalization tank 120 to the rapid reaction tank 240, and the source formula for the injection of the appropriate amount of the chemical reacted with the sludge flowing into the rapid reaction tank 240 can be further displayed, Various information that can be obtained from the sludge treatment system 100 can be displayed.

When a response signal is received as 'NO' in a subsequent setting value maintaining step 330, a preparation step for injecting an appropriate amount of the medicine may be performed by setting or resetting the source water formula and the sludge inflow amount. In addition, when a response signal is received as 'YES' at the set value maintaining step 330, the process proceeds to the set value storing step 350 and at the same time, the inflow amount of sludge flowing into the rapid reactor 240 is determined, and the source water equation is Can be determined to carry out the finishing preparation stage for operation.

In the MLSS concentration measurement step 360, the sludge introduced from the sludge equalization tank 120 and the dilution water flowing from the dilution tank 200 may be mixed and the concentration may be measured by the MLSS sensor 180.

Measuring tank dilution rate, MLSS concentration, drug dosage, sludge inflow output step 370, the sludge and dilution water dilution rate introduced into the measuring tank 150, MLSS concentration measured by the MLSS sensor 180, source water formula The drug dosage calculated by and the sludge inflow can be displayed. At this time, since there is a maximum limit range of the MLSS concentration that can be measured by the MLSS sensor 180, the step of satisfying the requirements of the MLSS concentration measurement 380 is performed.

When the response signal is received as 'NO' in the step Satisfying the requirement of the MLSS concentration measurement 380, the MLSS sensor 180 is above or below the limit range of the MLSS concentration that the MLSS sensor 180 can measure. Cannot see that the correct measurement has been made, and the dilution ratio is automatically adjusted (390).

In the automatic dilution ratio adjustment step 390, the dilution ratio newly adjusted through the first eco valve 130 and the second eco valve 190 is measured tank dilution ratio, MLSS concentration, drug dosage, and sludge inflow output 370. Can be applied to the stage.

When the response signal is received as 'YES' in the step of satisfying the requirements of the MLSS concentration measurement (380), the application of the rapid dose of the appropriate chemicals and the observation of the aggregation state (400) are continued.

Appropriate amount of drug input In the rapid reaction tank application and aggregation state observation step 400, the appropriate amount of drug input can be calculated from the determined MLSS concentration and the sludge inflow controlled by the third eco-valve 250, wherein the appropriate amount of drug input The coagulation reaction state which is automatically controlled by the chemical supply metering pump 260 and introduced into the rapid reaction tank 240 through the chemical supply pipe 261 can be observed.

In step 410, if the response signal is received as 'NO', the drug input rate adjustment step 420 may be performed to increase or decrease the calculated amount of the drug input. When the response signal is received as 'YES' in the agglomeration state satisfaction step 410, the measuring tank dilution ratio, MLSS concentration, drug dosage, and sludge inflow amount is displayed. At this time, the aggregated sludge may be introduced into the dehydrator through the dehydrator inflow pump 270 and treated.

Referring to FIGS. 2, 3, and 4 as described above, the first stirrer 110 connected to the sludge equalization tank 120, the sludge inflow control pump 122, the first eco valve, and the measurement tank 150 are described. A second stirrer 170 connected to the MLSS sensor 180, a second eco valve 190, a dilution water inflow pump 215 connected to the dilution tank 200, and a third stirrer 230 connected to the rapid reactor 240. ), The third eco-valve 250, the chemical supply metering pump 260, the dehydrator inlet pump 270 may be operated through a relay of a programmable logic control (PLC) constituting the integrated control panel 230. OFF 'can be controlled. Through the integrated control panel 220 connected from the first LADDER LOGIC mounted motion control controller 300, the drug injection control system 100 can be checked whether the normal operation and the output operation test.

Thereafter, the basic program connected to the LADDER LOGIC may be driven to determine whether or not the medicine injection control system 100 is abnormal. The MLSS sensor 180 may send data for each measurement cycle. The data may be received through the basic and the data transmitted through the communication port may be stored in numerical conversion in the basic. The data stored in the basic is determined to be included in the measurable range (hereinafter, referred to as an effective range) by the MLSS sensor 180, and when it is out of the measurable range, the first eco valve 130 based on the data stored in the basic. ), The second eco valve 190, and the third eco valve 250 may be operated.

When the sludge and the dilution water are supplied through the first eco valve 130, the second eco valve 190, and the third eco valve 250, respectively, the dilution is performed at least 2 times and at most 10 times in the measuring tank 150. Can proceed. At this time, depending on the size of the hole of the eco-valve may be diluted more than 10 times. When the data measured by the MLSS sensor 180 enters the effective range, the corresponding operation is stopped, and the data measured by the MLSS sensor 180 may be stored in the internal memory of the controller. The stored data is output on the screen and confirmed by the site manager, and the amount of chemicals used may be monitored for each operating condition. At the same time, the aggregation reaction result of the rapid reaction tank 250 can be visually confirmed.

As such, the sludge treatment system 100 measures the concentration of sludge generated in a water treatment process such as sewage treatment, wastewater treatment, and water treatment using a measurement system in real time, and measures the amount of flocculating chemicals used for dewatering the sludge. Reduce the impact on the ecosystem.

7 is a diagram illustrating a MLSS concentration-drug dosage table according to an embodiment of the present invention.

2, 3, and 4, when the integrated control panel 220 is set as an automatic operation condition, the sludge concentration measured through the MLSS sensor 180 and the sludge obtained through the control of the third eco-valve 250. Operating conditions according to flow rate fluctuation can be controlled.

By adjusting the injection amount of the drug compared to the concentration value measured based on the concentration and the flow rate change amount may be controlled to supply the amount of the chemical used in the rapid reaction tank 240 in the optimum conditions. In the autonomous driving conditions, the concentration measurement data for a predetermined time (minutes to several tens of minutes) may be continuously collected to automatically determine the increase or decrease of the use of the medicine compared to the concentration change, and the medicine may be supplied to the rapid reaction tank 240.

In the manual operating conditions, the operator can change the operating conditions of the site by changing the operating condition step and directly checking the concentration and aggregation of sludge, foreign substances and chemicals. At this time, the measurement concentration and the operating conditions can be checked by the operator through the display device.

Referring back to FIG. 6, the integrated control panel 220 maintains an MLSS concentration-drug dosage table 500 in which one or more sludge identifiers and one or more MLSS concentrations and drug doses corresponding to the respective sludge identifiers are recorded, and the MLSS When the concentration of the second agitated sludge in the measuring tank 150 measured by the sensor is the first concentration, the first chemical dose corresponding to the first concentration is read through the MLSS concentration-drug dosage table 500. The amount of chemicals introduced into the rapid reaction tank 240 may be controlled.

In the case of sludge 1, when the MLSS concentration (mg / L) is measured as 'concentration A', the chemical dose (mg / L) may be input as the 'first-first dose'. When the MLSS concentration (mg / L) is measured as 'concentration B', the drug dosage (mg / L) may be added as 'first-second dosage'. When the MLSS concentration (mg / L) is set to 'concentration C', the drug dosage (mg / L) may be input as the 'first 1-3 dosage'. If the sludge concentration is changed afterwards can be added as a corresponding dose.

In the case of sludge 2, when the MLSS concentration (mg / L) is set to 'concentration A', the chemical dosage (mg / L) may be input as the 'second-1 dosage'. When the MLSS concentration (mg / L) is measured as 'concentration B', the drug dose (mg / L) may be added as the 'second-2 dose'. When the MLSS concentration (mg / L) is measured as 'concentration C', the drug dose (mg / L) may be added as the 'second dose'. If the sludge concentration is changed afterwards can be added as a corresponding dose.

As described above, the present invention has been described by way of limited embodiments and drawings, but the present invention is not limited to the above embodiments, and those skilled in the art to which the present invention pertains various modifications and variations from such descriptions. This is possible.

Therefore, the scope of the present invention should not be limited to the described embodiments, but should be determined by the equivalents of the claims, as well as the claims.

100: sludge treatment system 110: first stirrer
120: sludge equalization tank 121: first sludge discharge port
122: first sludge lower outlet 123: first sludge lower valve
124: first weir 125: inflow control pump
126: sludge inlet pipe 127: sludge inlet valve
128: sludge inflow pump valve 130: the first eco-valve
131: rail drive motor 132: drive pulley
133: rail 134: position sensor
135: sensor kicker 136: roller
137: driven pulley 138: belt
139: LM guide 140: first opening and closing hole
141: second opening and closing hole
142: eco valve plate 150: measuring tank
151: second sludge outlet 152: second sludge lower outlet
153: second lower check valve
170: second stirrer 180: MLSS sensor
190: second eco valve 200: dilution water tank
210: dilution water level control wear 211: dilution water inlet constant piping
212: dilution water outlet 213: dilution tank bottom outlet
214: dilution tank lower valve 215: dilution water inlet pump
220: integrated control panel 230: third stirrer
240: rapid reaction tank 241: third sludge outlet
250: third eco valve
260: chemical supply metering pump 261: chemical supply pipe
270: dehydrator inlet pump 271: dehydrator inlet pipe
272: dehydrator inlet valve 273: third sludge lower outlet
274: third lower valve 275: dehydrator inlet pump valve
500: MLSS concentration-drug dosage table

Claims (5)

A sludge equalization tank in which a first stirrer for firstly stirring the introduced sludge is installed;
A measuring tank provided with a second stirrer for secondly stirring the first stirred sludge flowing from the sludge equalization tank and the dilution water flowing from the dilution tank;
A Mixed Liquer Suspended Solid (MLSS) sensor for measuring the MLSS concentration of the second stirred sludge in the measuring tank;
A rapid reaction tank provided with a third stirrer for supplying a chemical to the first stirred sludge introduced from the sludge equalization tank and stirring each other; And
An integrated control panel in which a chemical input controller is installed to control the input amount of the chemical input to the rapid reaction tank according to the measured MLSS concentration.
Sludge treatment system for adjusting the chemical input amount according to the sludge concentration, characterized in that it comprises a. The method of claim 1,
A first eco valve including one or more opening and closing holes and controlling the amount of sludge flowing into the measuring tank from the sludge equalization tank according to the opening and closing of each opening and closing hole by the eco valve plate according to the moving direction of the rail;
A second eco valve including at least one opening and closing hole and controlling the amount of dilution water flowing from the dilution tank into the measurement tank according to the opening and closing of each opening and closing hole by the eco valve plate according to the moving direction of the rail;
A third eco valve including at least one opening and closing hole and controlling the amount of sludge introduced into the rapid reaction tank from the sludge equalization tank according to the opening and closing of each opening and closing hole by the eco valve plate according to the moving direction of the rail; And
An eco-valve controller installed in the integrated control panel and controlling opening and closing of each opening and closing hole of the first eco valve, the second eco valve, and the third eco valve according to the measured MLSS concentration.
Sludge treatment system for adjusting the dosage of the drug according to the sludge concentration, characterized in that it further comprises. The method of claim 2,
The sludge equalization tank and the measurement tank are opened or closed to each other through the first eco valve, and the measurement tank and the dilution water tank are opened or closed to each other through the second eco valve, and the sludge equalization tank and the rapid reaction tank. Is opened or closed with each other through the third eco valve, and the chemical injection controller and the eco valve controller are installed in the one integrated control panel, the sludge treatment system for adjusting the chemical input amount according to the sludge concentration. The method of claim 2,
The eco-valve controller maintains a memory in which a maximum measured concentration is determined according to the performance of the MLSS sensor, and the concentration of the secondary stirred sludge measured in the measuring tank exceeds the maximum measured concentration. By controlling the opening or closing operation of the first eco-valve and the second eco-valve to control the concentration of the second agitation sludge is less than the maximum measured concentration to adjust the chemical input amount according to the sludge concentration Sludge treatment system. The method of claim 1,
The dosing controller maintains an MLSS concentration-drug dosage table in which one or more sludge identifiers and one or more MLSS concentrations and drug doses corresponding to each sludge identifier are recorded, and the second agitation of the measuring tank measured by the MLSS sensor. When the concentration of sludge is the first concentration, the first chemical dose corresponding to the first concentration is read through the MLSS concentration-drug dose table to control the dose of chemicals introduced into the rapid reaction tank Sludge treatment system to adjust the dosage of chemicals according to the concentration.

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