KR102009949B1 - Food waste water control system and method thereof - Google Patents

Abstract

The present invention relates to a food waste effluent integrated control system and a control method thereof, wherein the system increases an amount of gas production by automating an input amount of food waste effluent by analyzing a field driving factor between a field part and a center part and constructing a transmission system. In addition, the present invention has an effect of accumulating regional and seasonal properties of returned food waste effluent and predicting the state of operating a food waste effluent treatment process based on the accumulated data to exhibit constant efficiency. The food waste effluent integrated control system comprises: a field part; a server; and the center part.

Description

Negative wastewater integrated control system and its control method {FOOD WASTE WATER CONTROL SYSTEM AND METHOD THEREOF}

The present invention is a negative wastewater integrated control system and the negative wastewater integrated control system that can predict the operation state of the treatment process to respond to the process abnormality according to the region and seasonal characteristics of the negative wastewater brought into the control method and control method and its It relates to a control method.

In general, food waste water is a wastewater that is leached and desorbed during the pretreatment of food wastes discharged from homes and restaurants.

Among them, the negative waste water has a high concentration of chemical oxygen demand (CODcr) and biochemical oxygen demand (BOD), and is mostly composed of organic matter.

In addition, the amount of wastewater generated in Korea is 8,634 tons / day, and the amount of wastewater generated is continuously increasing due to the increase of food consumption due to the improvement of income level and the spread of food collection in the military region.

Wastewater is mainly transported to public sewage treatment plants, wastewater treatment plants, waste incineration facilities, etc.However, the Ministry of Environment prohibits dumping wastewater into the oceans in accordance with international conventions. It is shifting to producing gas.

The energy plant produces biogas using the principle of anaerobic digestion in which organic matter contained in the effluent is gradually decomposed by various anaerobic microorganisms and converted into final methane, carbon dioxide, water, and the like.

However, energy-efficient facilities have a variety of properties depending on the region, season, pretreatment method, etc., it is difficult to treat with a constant efficiency.

Background art of the present invention, Republic of Korea Patent Publication No. 10-2015-0111675 (hereinafter, Document 1), Republic of Korea Patent Publication No. 10-1018886 (hereinafter, Document 2), Republic of Korea Patent Publication No. 10-1237444 And Japanese Patent Application Laid-Open No. 2008-253870 (hereafter, Document 4).

Document 1 diagnoses the operation status of the anaerobic digestion tank (methane fermentation tank) of the sewage treatment plant and predicts the amount of digestion gas generated and diagnoses whether it is operating within the proper operating range for the current operation status of the digester. It is a system that predicts the amount of extinguishing gas under any operating condition.

The system of Document 1 predicts the amount of extinguishing gas through inflow / outflow flow rate and inflow / outflow concentration of water quality data necessary for operation of the digester, but when it is applied to the wastewater treatment process, the conditions of each process according to the water quality change Difficult to predict

In addition, the system is difficult to predict the processing efficiency of each process in real time, so it is difficult to set the optimum operating conditions, and thus there is a problem that it is difficult to cope with any abnormality in the process.

Document 2 is a method of processing organic wastes with a digester predictive control system and a digester predictive control system. The present condition is monitored by measuring equipment to predict and control the condition of the digester through interlocking control of a matlab-fuzzy PLC program. It is a system.

The system of Document 2 evaluates the condition of the digester by analyzing the data by means of a matlab purge program with the average value of the stored data, but this also predicts and controls only the amount of digested gas as in the system of Document 1.

In addition, it is difficult to predict and operate the conditions according to each process by applying the system of Document 2 to the negative wastewater.

Document 3 is a system capable of predictive diagnosis by deriving a diagnosis rule by collecting and processing data on operation and water quality accumulated in the process diagnosis system and method of a wastewater treatment plant.

The system of Document 3 uses a K-means clustering algorithm to give a diagnosis result to each of the processed data, but there is a problem that the result varies depending on how the first representative point is obtained.

In addition, the above system diagnoses only the BOD condition of the effluent and is high / low for the complex factors such as sludge waste volume, reactor temperature, internal return rate, reactor pH, and BOD volume load. have.

Document 4 is a methane fermentation control system that measures the gas content, ammonia concentration, and volatile fatty acid (hereinafter VFA) concentration at the same time to determine the state in the methane fermentation tank, it is a system that can control by controlling the amount of biomass.

The system of Document 4 controls the fermentation state of the methane fermentation tank, i.e., controls the amount of gas, establishes the condition of the input amount of the negative wastewater, and thus, it is difficult to operate automatically. Therefore, problems may occur in each process even if it is applied to the wastewater treatment process.

Background literature

(Document 1) Republic of Korea Patent Publication No. 10-2015-0111675

(Document 2) Republic of Korea Patent Publication No. 10-1018886

(Document 3) Republic of Korea Patent Publication No. 10-1237444

(Document 4) Japanese Unexamined Patent Publication No. 2008-253870

The present invention is to solve the problems of the background art, the wastewater integrated control system and control method that can predict the operation state of the wastewater treatment process by measuring a variety of properties and regional characteristics of the imported wastewater is different and seasonal To provide.

In particular, the present invention is to establish a field operation factor analysis and transmission system between the field and the central part to quickly respond to problems in the wastewater treatment process, and to establish the optimum operating conditions.

In addition, the present invention intends to simultaneously predict the water quality and gas amount of each process.

Furthermore, the present invention is to maximize the gas production by automating the negative waste water input by establishing an automatic measurement for the water quality of the negative waste water treatment process.

In order to achieve the above object, the present invention, water quality information and gas information according to each process in the wastewater treatment process site is measured and transmitted to the server 20, and receives control information through the server 20 to control A field unit 10 for operating each process according to the information and transmitting operation information to the server 20; Receives and analyzes the water quality information and gas information measured in the field unit 10, transmits the control information to the field unit 10 based on the analysis information, receives the operation information, and transmits the received operation information to the central unit ( 30, a server 20 for receiving the setting information set in the central portion 30 and stores each information; And a central unit (30) for receiving driving information from the server (20) and transmitting setting information to the server (20) to check the information of the wastewater treatment process in real time. It features.

The on-site unit 10 includes: a water quality unit 110 for measuring water quality information according to each process; A driving unit 120 driving according to the control information received from the server 20; A gas unit 130 for measuring the generated gas; A confirmation unit 140 confirming whether the driving unit 120 is performed by the control information received from the server 20; An on-site transmitter 150 for transmitting water quality information, operation information, gas information, and confirmation information to the server 20; And an on-site receiver 160 for receiving control information from the server 20.

The server 20 includes a server receiver 210 for receiving information transmitted from the field unit 10 and information transmitted from the central unit 30; An analysis unit 220 analyzing the information received by the server receiving unit 210; A control unit 230 for generating control information on the field unit 10 based on the information analyzed by the analysis unit 220; A server transmitter 240 for transmitting control information to the field unit 10 and transmitting operation information received from the field unit 10 to the central unit 30; And a storage unit 250 storing information received from the server receiver 210, analysis information, control information, and information transmitted from the server transmitter 240.

The central unit 30 includes a central receiving unit 310 for receiving information from the server 20; A setting unit 320 for manually selecting control information for controlling each process; An input unit 330 for inputting previous water quality information, gas information, and driving information; A central confirmation unit 340 for receiving information from the server 20 and confirming in real time; And a central transmitter 350 for transmitting the selection information selected by the setting unit 320 and the input information input by the input unit 330 to the server 20.

Water quality information of the present invention is characterized in that any one or more of VFA, Bicarbonate, Alkalinity, pH, Ammonia Nitrogen is included.

The server 20 may further include a detector 260 that checks the driving information received from the field unit 10 and detects an abnormality.

Method for controlling the negative wastewater by the negative wastewater integrated control system includes the step of measuring the water quality information of the negative wastewater treatment process in the field unit (10) (S100); Analyzing the measured water quality information in the server 20 to generate control information (S200); The sound wastewater treatment process is driven by the control information (S300); Driving information is generated in the field unit 10 (S400); And receiving operation information from the server 20 and confirming in real time in the central unit 30 (S500).

The method for controlling the negative wastewater integrated control system may include detecting an abnormality of the field part 10 and transferring the abnormality information to the central part 300 (S600).

The water quality information is characterized in that any one or more of VFA, bicarbonate, alkalinity, pH, ammonia nitrogen.

It is characterized in that it provides a negative wastewater integrated control system that can control the negative wastewater by the method of controlling the negative wastewater by the negative wastewater integrated control system.

The present invention has the effect of preventing the problems occurring in the process in advance by predicting the treatment efficiency of each wastewater process in real time.

That is, the present invention has the effect of predicting the water quality change in the wastewater treatment process in advance and at the same time predict the amount of gas produced.

In addition, the present invention is different in the region and season characteristics of the wastewater, measuring the various properties and accumulating data to build the optimum operating conditions to increase the wastewater treatment capacity and at the same time has the effect of maximizing gas production.

1 is a control flow chart between the wastewater integrated control system and the wastewater treatment process of the present invention.
2 is a flow chart of the negative wastewater integrated control system of the present invention.
Figure 3 is a flow chart schematically showing the configuration of the negative wastewater integrated control system of the present invention.
4 is a flowchart illustrating a control method using an integrated sound wastewater control system.
5 is a result of throughput, organic acid accumulation and gas generation according to before and after application of the negative wastewater integrated control system 1 to the methane fermentation tank 5.
<Description of the code>
1: negative wastewater integrated control system,
2: wastewater treatment process, 3: wastewater storage tank, 4: acid fermentation tank, 5: methane fermentation tank, 6: stabilization tank,
10: field department,
110: water quality unit, 120: driving unit, 130: gas unit, 140: check unit, 150: field transmitter, 160: field receiver,
20: server,
210: server receiving unit, 220: analyzing unit, 230: control unit, 240: server transmitting unit, 250: storage unit,
30: central part,
310: central receiving unit, 320: setting unit, 330: input unit, 340: central confirmation unit, 350: central transmission unit,
S100: step of measuring the water quality information of the wastewater treatment process in the field unit 10,
S200: step of generating control information by analyzing the measured water quality information in the server 20,
S300: step of operating the wastewater treatment process by the control information,
S400: step of driving information generated in the field unit 10,
S500: Receiving driving information from the server 20 is confirmed in real time in the central portion 30

Hereinafter, the present invention will be described in detail through examples.

The objects, features and advantages of the present invention will be readily understood through the following examples.

The invention is not limited to the embodiments disclosed herein, but may be embodied in other forms. The embodiments disclosed herein are provided to sufficiently convey the spirit of the present invention to a person having ordinary knowledge in the technical field to which the present invention belongs, and all the transformations included in the technical spirit and technical scope of the present invention. It should be understood to include equivalents, substitutes, or substitutes.

Therefore, the present invention should not be limited by the following embodiments, and it should be understood that all transformations included in the technical spirit and technical scope of the present invention are included. That is, a person having ordinary knowledge in the technical field to which the present invention belongs may variously modify or modify the present invention by adding, changing, deleting, or adding components within the scope not departing from the spirit of the present invention described in the claims. It will be possible to change, which will also be within the scope of the invention.

As the present invention allows for various changes and numerous embodiments, particular embodiments will be illustrated in the drawings and described in detail. In the drawings, the size of elements or the relative sizes between elements may be somewhat exaggerated for clarity of understanding of the present invention. In addition, the shape of the elements shown in the drawings may be somewhat changed due to variations in the manufacturing process.

Accordingly, the embodiments disclosed herein are not to be limited to the shapes shown in the drawings unless specifically stated, it should be understood to include some modification.

On the other hand, various embodiments of the present invention can be combined with any other embodiment unless clearly indicated to the contrary. Any feature indicated as particularly preferred or advantageous may be combined with any other feature and features indicated as preferred or advantageous. That is, various aspects, features, embodiments or implementations of the invention may be used alone or in various combinations.

It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only, and is not intended to be limited by the claims. All technical and scientific terms used herein are commonly described unless otherwise indicated. It has the same meaning as is generally understood for a person with. Singular expressions include plural expressions unless the context clearly indicates otherwise.

In the following description of the present invention, if it is determined that the detailed description of the related known technology may obscure the gist of the present invention, the detailed description thereof will be omitted.

As shown in FIG. 1, a negative waste water storage tank 3; Acid fermentation tank (4); By measuring the water quality information of each process at the site of the wastewater treatment process (2) including the methane fermentation tank (5) and the stabilization tank (6), the water quality state is predicted through the integrated wastewater control system (1), The methane fermentation tank 5 derives the wastewater treatment volume, and the amount of gas generated in the stabilization tank 4 can be predicted.

As shown in FIG. 2, the negative wastewater integrated control system 1 may continuously and automatically exchange information of the field unit 10, the server 20, and the central unit 30 through wired / wireless networks. .

First, the site portion 10 may be installed in the whole wastewater treatment process (2), may be partially installed according to the wastewater treatment process, it is installed in a plurality of wastewater treatment process (2) by season, region Information can be measured and collected.

As shown in FIG. 3, the field unit 10 includes a water quality unit 110, a driver 120, a gas unit 130, a check unit 140, a field transmitter 150, and a site receiver 160. Included.

The water quality unit 110 includes a first water quality unit 111, a second water quality unit 112, and a third water quality information for measuring water quality information including at least one of a wandering, VFA, bicarbonate, alkalinity, pH, and ammonia nitrogen. It may be composed of the water quality section 113.

An automatic water quality analyzer may be included in the measurement valve to measure the water quality information.

The first water quality unit 111 may measure the first water quality information in a measurement valve included between the negative wastewater storage tank 3 and the acid fermentation tank 4.

The second water quality unit 112 may measure the second water quality information in a measurement valve included between the acid fermentation tank 4 and the methane fermentation tank 5.

The water quality information of the first water quality portion 111 and the second water quality portion 112 may be utilized by receiving water quality information (for example, three years) accumulated in the central portion 30 to be described later.

The third water quality unit 113 may measure the third water quality information from a measurement valve included between the methane fermentation tank 5 and the stabilization tank 6.

In addition, the time at which each item is measured in the water quality unit 110 may be performed 1 to 25 minutes, preferably 5 to 20 minutes, most preferably 10 to 15 minutes.

By using the water quality information measured through the water quality unit 110, it is possible to determine the risk level of the organic acid, and to perform the optimal treatment below that to increase the negative wastewater throughput.

Next, the driver 120 may operate the sound wastewater treatment process 2 according to the control information received from the server 20.

Among the wastewater treatment process 2, the amount of the wastewater introduced into the methane fermentation tank 5 may be controlled and operated.

The gas unit 130 measures the gas generated in the methane fermentation tank 5 and the stabilization tank 6, that is, methane gas in real time.

In addition, the gas unit 130 may receive the amount of sound waste water discharged from the methane fermentation tank 5 from the server 20 to control the operation of the supply pump.

The confirmation unit 140 may determine whether the driving unit 120 is performed based on the control information received from the server 20.

The field transmitter 150 transmits the water quality information, the operation information, the gas information, and the confirmation information generated by the field unit 10 to the server 20.

The field receiver 160 may receive control information from the server 20.

As shown in FIG. 3, the server 20 includes a server receiver 210, an analyzer 220, a controller 230, a server transmitter 240, and a storage 250.

The server receiver 210 may receive information transmitted from the field unit 10 and information transmitted from the central unit 30.

Information transmitted from the field unit 10 may include water quality information, operation information, gas information, and confirmation information.

The information transmitted from the central unit 30 may include selection information and input information.

The analyzer 220 may analyze the information received by the server receiver 210.

First, a water quality measurement period for obtaining water quality information in the field unit 10 is calculated through selection information transmitted from the central unit 30.

At this time, the water quality measurement period (X) may be calculated as 24 / m / n.

m is the methane fermentation tank quantity, n is the number of measurements.

The number of measurements may be set manually or using a value established in the central portion 30.

The analysis unit 220 may compare and analyze the water quality information transmitted from the field unit 10 and the water quality information transmitted from the central unit 30, and may be used as a driving factor.

The controller 230 generates control information for controlling the field unit 10 based on the information analyzed by the analyzer 220.

The control information means the amount of negative wastewater which is a predicted input amount to the methane fermentation tank 5.

The server transmitter 240 may transmit control information to the field unit 10, and may transmit the operation information received from the field unit 10 to the central unit 30.

The storage unit 250 may store the information received from the server receiver 210, analysis information, control information, and information transmitted from the server transmitter 240 into a DB.

Among them, the storage format of water quality information may be configured as * .csv & SQL, but is not limited thereto.

The server 20 may further include a detector 260 for checking operation information received from the field unit 10 and detecting an abnormality in each process.

As the sensing unit 260 is further included, the notification unit 360 may be further included in the central unit 30 described later.

As shown in FIG. 3, the central unit 30 includes a central receiving unit 310, a setting unit 320, an input unit 330, a confirming unit 340, and a central transmitting unit 350.

The central receiver 310 receives information from the server 20.

In this case, the received information includes driving information.

The setting unit 320 may automatically or manually select control information for controlling each process.

The control information may be preset in the number of times the water quality measured by the field unit 10.

In particular, as the number of times of water quality measurement is preset, it divides the measurement cycle and the measurement time, divides the time for each grain, and continuously measures automatically, thereby improving the efficiency and automation of the measurement cycle.

The input unit 330 may load the previously collected water quality information, gas information, and operation information DB of each process.

The central verification unit 340 may receive information from the server 20 and check the state of the sound wastewater treatment process 2 with the electric field display device in real time.

The central transmitter 350 may transmit the selection information selected by the setting unit 320 and the input information input by the input unit 330 to the server 20.

As mentioned earlier, the alarm unit 360 may generate an alarm for a predetermined time (for example, 1 to 2 minutes) through a sound or a light emitting device.

As shown in FIG. 4, in the method of controlling the negative wastewater of the negative wastewater treatment process 2 by the integrated negative wastewater control system, water quality information of the negative wastewater treatment process is measured in the field part 10 (S100). ); Analyzing the measured water quality information in the server 20 to generate control information (S200); The sound wastewater treatment process is driven by the control information (S300); Driving information is generated in the field unit 10 (S400); And receiving operation information from the server 20 and confirming in real time at the central unit 30 (S500).

Step (S100) of measuring the water quality information of the wastewater treatment process in the field unit 10 is the step of setting the number of water quality measurement (S110); Calculating a water quality measurement cycle (S120); Measuring the water quality (S130); In operation S140, measured water quality information may be transmitted.

In the step S110 of setting the number of water quality measurements, the predetermined number of times of water quality measurement in the setting unit 320 is transmitted to the server 20, and the server 20 receives the number of times of water quality measurement.

Thereafter, step S120 is performed in which a water quality measurement cycle is calculated.

At this time, the water quality measurement cycle is calculated in the analysis unit 220 by the number of water quality measurement.

Table 1 is an exemplary diagram showing the water quality measurement cycle of the water quality measurement items.

No Water quality measurement item Water quality measurement cycle DBization cycle Measuring time Save Format One VFA

X = 24 / m / n

Same as the water quality measurement cycle

10-15min

* .csv & SQL 2 bicarbonate 3 Alkalinity 4 pH 5 Ammonia nitrogen

As shown in Table 1, the water quality measurement period (X) is calculated as 24 / m / n, m is the methane fermentation tank quantity, n is the number of measurements.

When the water quality measurement cycle is determined, the server 20 performs a step (S130) in which the measurement number is transmitted to the field unit 10 according to the measurement frequency and the water quality is measured.

As the water quality measurement cycle is calculated, the measurement cycle and time may be divided based on the number of measurements, and thus, may be installed in a plurality of negative wastewater treatment processes (2), thereby measuring and collecting seasonal and regional information.

That is, as the seasonal and regional information of the negative wastewater is constructed, the water quality change of the negative wastewater can be predicted in advance.

In addition, as the negative wastewater integrated control system 1 is installed, efficiency and automation of a measurement cycle are established through continuous automatic measurement of a plurality of negative wastewater treatment processes 2, so that the negative wastewater can be efficiently treated.

Thereafter, the field part 10 measures the water quality information through the water quality part 110.

The water quality information may include any one or more of wandering, VFA, bicarbonate, alkalinity, pH, ammonia nitrogen.

Next, the measured water quality information is transmitted to the server 20 through the field transmitter 150 of the field unit 10 (S140).

In step S200, the control information is generated by analyzing the measured water quality information in the server 20.

Analyzing the measured water quality information in the server 20 to generate control information (S200) includes receiving water quality information from the server 20 (S210); Analyzing the water quality information (S220); Generating control information based on the analysis information (S230); Control information may be performed in the order of the step (S240) to be transmitted.

In the step S210 of receiving water quality information from the server 20, the water quality information transmitted from the field unit 10 is received through the server receiver 210.

Thereafter, step S220 of analyzing water quality information is performed.

The received water quality information is analyzed by comparing the water quality information transmitted from the central portion 30 to automate and maximize the amount of sound wastewater flowing into the methane fermentation tank 5 from the analysis unit 220.

In particular, the water quality information transmitted from the central portion 30 may be historical data based on seasonal negative wastewater DB.

That is, the analysis unit 220 automatically starts and ends the date of reflecting the historical data based on the seasonal negative wastewater DB on the basis of the driving time of the field unit 10 to automatically determine the importance of the driving factors from 1 to 5 ranks. By reflecting the amount of wastewater input can be analyzed.

Table 2 below is an exemplary diagram showing the importance of the driver.

Reflected ranking Control factor importance(%) One Methane Fermentation Tank Gas Generation 30 2 Methane fermentation tank methane partial pressure 20 3 Acid Fermentation Tank TS (VS) 20 4 Methane Fermentation VFA 10 5 Methane Fermentation Tank pH 5

As shown in Table 2, methane fermentation tank (5) gas generation amount, methane fermentation tank (5) methane partial pressure, acid fermentation tank (4) TS (VS), methane fermentation tank (5) VFA, methane fermentation tank (5) pH in order Factors may be determined, but control factors may vary depending on season, region, or water quality information.

If the sum of the importance is not 100% of the control signal, in order to compensate for this, the reflection of the importance is supplemented and calculated to transmit the importance information to the central unit 30.

Thereafter, step S230 of generating control information based on the analysis information is performed.

Negative wastewater is difficult to operate the methane fermentation tank (5) because the acid fermentation step in the anaerobic digestion is about 5 times faster than the methane production step due to the pH decrease by the accumulation of organic acids.

Therefore, the concentration of organic acid is proportional to the amount of wastewater treated.Optimum Throughput Determination of the risk level of organic acid in order to maintain the proper concentration of organic acid to prevent pH drop and toxicity, Analyze drinking water inflow.

The optimum throughput calculation formula is Qf = Qa + {(Qm-Qa) x f}.

Qf is the optimum throughput, Qa is the average dose in the organic acid set range, Qm is the maximum dose in the organic acid set range, f is the weight (0.1 ~ 1).

That is, the controller 230 calculates an optimum throughput to control the negative wastewater flowing into the methane fermentation tank 5 based on the operation critical factor, which is the information analyzed by the analyzer 220, and generates control information.

As the optimum throughput is analyzed, the efficiency can be maximized due to the increased throughput of the methane fermentation tank (5), resulting in an increase in the amount of methane gas produced.

In particular, the pH of 4 or less, the methane production step is stopped to solve the problem that the methane gas production is not possible to maintain a constant organic acid concentration has the effect of stabilizing the wastewater treatment process (2).

Thereafter, step S240 is performed in which control information is transmitted.

The control information generated by the controller 230 may be transmitted to the field unit 10 through the server transmitter 240.

In operation S300, the sound wastewater treatment process is operated by the control information.

The field unit 10 receives control information through the field receiver 160, and as the driving unit 120 operates, negative wastewater may be injected into the methane fermentation tank 5.

At the same time, the gas unit 130 measures the methane gas generated in the methane fermentation tank 5 and the stabilization tank 6 in real time, and the gas information is transmitted to the server 20.

In addition, the gas unit 130 automatically corrects the input amount according to the gas generation amount to receive the sound waste water discharged from the methane fermentation tank 5 to control the operation of the feed pump.

That is, the amount of negative waste water flowing into the stabilization tank 6 is adjusted to predict the gas generation, and the stabilization tank 6 is operated in real time.

In operation S400 in which driving information is generated in the field unit 10, driving information is generated in the driving unit 120, and at the same time, gas information is also generated in the gas unit 130.

At this time, the generated information is transmitted to the server 20 through the field transmitter 150.

Thereafter, step S500 of receiving driving information from the server 20 and confirming in real time in the central unit 30 is performed.

The server 20 receives the driving information through the server receiver 210.

The received driving information is displayed on the field display device in real time in the state of the sound wastewater treatment process 2 through the central confirmation unit 340 through the central receiving unit 310 of the central unit 30.

The information received by the server 20 and the information generated by the server 20 through the storage unit 250 of the server 20 are automatically stored in real time DB.

After that, when it is confirmed that there is no abnormality, it is possible to check in real time as the above steps are repeatedly performed.

If an abnormality occurs in the field unit 10, a step S600 of detecting an abnormality of the field unit 10 and transferring the abnormality information to the central unit 300 may be further included.

When the field information received through the field unit 10 detects an abnormality in the detecting unit 260 of the server 20, the detecting unit 260 generates abnormal information.

The abnormality information is received through the server transmitting unit 240 to the central receiving unit 310 of the central unit 300, a predetermined time (for example, 1 to 2 minutes) through the sound or light emitting element through the notification unit 360 An alarm may be generated.

After the alarm, if the action is taken, the above steps are repeated.

In addition, when no action is taken after the alarm is generated (for example, 10 minutes or more after the alarm is generated), the operation of the wastewater treatment process 2 is automatically stopped.

That is, by detecting the abnormality in advance to block the risk factors that can kill the microorganism of the methane fermentation tank (5) has the effect of maintaining a constant operating efficiency.

Experimental Example 1

Before, after the application of the negative wastewater integrated control system (1) of the present invention to the methane fermentation tank (5) was confirmed the amount of treatment, the amount of organic acid accumulation, the amount of gas generated.

The experimental group applied the negative wastewater integrated control system (1) to the methane fermentation tank (5), and the control group did not apply the negative wastewater integrated control system (1) to the methane fermentation tank (5).

The throughput, organic acid accumulation, and gas generation for four weeks were checked in real time.

As shown in FIG. 5, the experimental group has an organic acid concentration difference of 760 mg / l with a throughput of 140 m ³ / day, an organic acid concentration of up to 6,972 mg / l, and a minimum of 6,212 mg / l, according to the application of the negative wastewater integrated control system 1. Confirmed.

If the organic acid concentration is more than 7,000 mg / l, the methane production step is stopped due to the danger zone and methane gas production is impossible.

On the other hand, the control group 133m ³ / day, organic acid concentration up to 7,068mg / ℓ, at least 4,864mg / ℓ was confirmed that the difference in the organic acid concentration of 2,204mg / ℓ.

In particular, when the concentration of the organic acid in the methane fermentation tank increases, it can be seen that the methane production step is stopped to reduce the throughput.

In addition, the experimental group and the control group confirmed that the throughput, the amount of organic acid accumulation, and the amount of gas generated were proportional to each other.

In addition, the experimental group was increased by 1.05 times as compared to the control group, the organic acid concentration was maintained constant as the difference in organic acid concentration was reduced to 2.9 times confirmed the effect of stabilizing the wastewater treatment process (2).

Experimental Example 2

The amount of treated wastewater before and after the application of the integrated wastewater control system 1 of the present invention was confirmed.

The experimental group applied the negative wastewater integrated control system, and the control group compared the negative wastewater throughput in 2005 without the negative wastewater integrated control system.

[Table 3] below is the result of confirming the negative wastewater throughput before and after the application of the negative wastewater integrated control system (1).

division Wastewater Throughput Work throughput (m ³ ) Lead Throughput (m ³ ) Control 422 159,002 Experimental group 443 166,952 increase 21 increase 7,950 increase

As shown in Table 3, when comparing the experimental group and the control group, it can be seen that the treatment of the negative wastewater increased by applying the integrated negative wastewater control system (1).

In particular, the experimental group analyzes the cumulative problem of measuring the organic acid analysis every day according to the application of the negative wastewater integrated control system (1) three times a day as the automatic water quality analyzer is used in the water quality unit 110 to determine the organic acid accumulation state and Can be adjusted.

Therefore, there is an effect of increasing the maximum wastewater treatment by maintaining a constant optimal organic acid concentration.

Experimental Example 3

The biogas production amount before and after the application of the negative wastewater integrated control system 1 of the present invention was confirmed.

The experimental group applied the integrated negative wastewater control system, and the control group confirmed biogas production in 2005 without the integrated negative wastewater integrated control system.

[Table 4] below shows the results of confirming biogas production before and after application of the negative wastewater integrated control system (1).

division Biogas Generation Biogas conversion rate Amount of work
(Nm ³ ) Annual occurrence
(Nm ³ ) Per inflow CODcr
(Nm ³ / kg CODcr) Per capita income
(Nm ³ / ton) Control 35,374 12,911,494 0.55 (153,603) 84 Experimental group 37,142 13,557,069 - - increase 1,768 increase 645,575 increase - -

As shown in Table 4, when comparing the experimental group and the control group it can be confirmed that the biogas generation amount increased by applying the integrated negative wastewater control system (1).

In particular, the annual amount of biogas is 645,575Nm ³ In this case, take advantage of it LNG in accordance with generally increased as LNG price is 693.3 won / Nm ³ days, when converted to LNG replacement costs, the economic benefits of about 300 million won to infer balsaengdoem Can be.

The present invention is an industrially available invention in which gas production is increased by automating negative wastewater input by constructing a system for analyzing and transmitting field operator between the field and the central part with the integrated wastewater control system and its control method.

Claims (10)

A negative waste water storage tank 3; Acid fermentation tank (4); In the wastewater treatment process site including the methane fermentation tank 5 and the stabilization tank 6, water quality information and gas information of each process are measured and transmitted to the server 20, and control information is received through the server 20. A field unit 10 for operating each process according to the control information and transmitting the operation information to the server 20;
Receives and analyzes the water quality information and gas information measured in the field unit 10, transmits the control information to the field unit 10 based on the analysis information, receives the operation information, and transmits the received operation information to the central unit ( 30, a server 20 for receiving the setting information set in the central portion 30 and stores each information; And
And a central unit 30 for receiving driving information from the server 20 and transmitting setting information to the server 20 to check information of the wastewater treatment process in real time.
The on-site unit 10 includes: a water quality unit 110 for measuring water quality information according to each process; A driving unit 120 driving according to the control information received from the server 20; A gas unit 130 for measuring the generated gas; A confirmation unit 140 confirming whether the driving unit 120 is performed by the control information received from the server 20; An on-site transmitter 150 for transmitting water quality information, operation information, gas information, and confirmation information to the server 20; And a field receiver 160 which receives control information from the server 20.
The server 20 includes a server receiver 210 for receiving information transmitted from the field unit 10 and information transmitted from the central unit 30; An analysis unit 220 analyzing the information received by the server receiving unit 210; A control unit 230 for generating control information for controlling the field unit 10 based on the information analyzed by the analysis unit 220; A server transmitter 240 for transmitting control information to the field unit 10 and transmitting operation information received from the field unit 10 to the central unit 30; And a storage unit 250 that stores information received from the server receiver 210, analysis information, control information, and information transmitted from the server transmitter 240.
The controller 230 includes Equation 1 below, which is an optimum throughput calculation formula for analyzing the inflow of wastewater,
The central unit 30 includes a central receiving unit 310 for receiving information from the server 20; A setting unit 320 for automatically or manually selecting control information for controlling each process; An input unit 330 for inputting previous water quality information, gas information, and driving information; A central confirmation unit 340 for receiving information from the server 20 and confirming in real time; And a central transmitter 350 for transmitting the selection information selected by the setting unit 320 and the input information input by the input unit 330 to the server 20.
Water quality information includes any one or more of volatile fatty acids (VFA), Bicarbonate, Alkalinity, pH, Ammonia Nitrogen,
The gas unit 130 automatically corrects the amount of wastewater discharged according to the amount of gas generated to receive the amount of wastewater discharged from the methane fermentation tank 5 to control the operation of the supply pump, thereby adjusting the amount of wastewater flowing into the stabilization tank 6. To predict the amount of gas generated by the negative wastewater integrated control system.
[Equation 1]
Qf = Qa + [(Qm-Qa) × f], (Qf is the optimum throughput, Qa is the average dose within the organic acid setting range, Qm is the maximum dose within the organic acid setting range, f is the weight (0.1 ~ 1))
delete delete delete delete The method according to claim 1,
The server 20,
Confirming operation information received from the field unit 10, characterized in that it further comprises a detection unit for detecting an abnormality, negative wastewater integrated control system.
By the negative wastewater integrated control system to control the negative wastewater,
Setting the number of times of water quality measurement (S110); Calculating a water quality measurement cycle (S120); Measuring the water quality (S130); And step S100 of measuring the water quality information of the sound wastewater treatment process comprising the step (S140) of the measured water quality information is transmitted (S100);
Receiving water quality information from the server 20 (S210); Analyzing the water quality information (S220); Generating control information based on the analysis information (S230); And generating control information by analyzing the measured water quality information including the step of transmitting the control information (S240) in the server 20 (S200).
The sound wastewater treatment process is driven by the control information (S300);
Driving information is generated in the field unit 10 (S400); And
Receiving the driving information from the server 20 includes a step (S500) that is confirmed in real time in the central portion 30,
Water quality information is measured at least one of volatile fatty acids (VFA), Bicarbonate, Alkalinity, pH, Ammonia Nitrogen,
The step (S230) of generating control information based on the analysis information includes Equation 1 below, which is an optimum throughput calculation formula for analyzing negative wastewater inflow,
The step S300 of operating the wastewater treatment process by the control information (S300) is characterized in that the gas portion 130 can automatically correct the amount of wastewater discharged according to the amount of gas generated, thereby predicting the amount of gas generation. Way.
[Equation 1]
Qf = Qa + [(Qm-Qa) × f], (Qf is the optimum throughput, Qa is the average dose within the organic acid setting range, Qm is the maximum dose within the organic acid setting range, f is the weight (0.1 ~ 1))
The method according to claim 7,
The negative wastewater integrated control system control method,
Sensing the abnormality of the field unit 10 and transmitting the abnormality information to the central portion 300 (S600); characterized in that it further comprises, the negative wastewater integrated control system control method. delete delete

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