A sewage pipe network partition tracing control system and a control method thereof

Abstract

The application discloses a sewage pipe network partition tracing control system and a control method thereof. The system comprises a pipe network system, an intelligent control system and a sewage plant. The pipe network system transports sewage in each partition to the sewage plant through a sewage main pipe. An electric conductivity detection device is arranged at a tail water outlet of the sewage plant, which is used for real-time monitoring of tail water of the sewage plant. When the electric conductivity exceeds a standard, a sewage plant outlet valve is closed, and the electric conductivity along the pipe network system is investigated. The control system calculates the sewage inflow along the pipe network system, controls the sewage discharge flow and time, and thus guarantees that the electric conductivity of the tail water of the sewage plant reaches the standard. A plurality of pipe wells are arranged along the pipe network system, and an integrated detection device is arranged in each pipe well, which is used for real-time monitoring of liquid level, flow velocity, flow rate and electric conductivity data, and sending the monitoring data to a monitoring system and a control system. The system can intelligently control and optimally dispatch the sewage discharge of the sewage pipe network system according to local conditions, and thus guarantees that the tail water of the sewage plant stably reaches the standard.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of municipal sewage treatment, and particularly relates to a pipe network partition control system and a control method thereof. BACKGROUND

[0002] In recent years, with the rapid development of industrialization, the number of industrial enterprises in cities and towns has increased, and the conductivity value of the sewage is significantly greater than that of domestic sewage, which will directly lead to an increase in the sewage treatment load of the sewage plant, may lead to a decrease in the treatment efficiency, and even cannot meet the discharge standard, bringing challenges to the treatment process of the sewage plant. In order to cope with the high-conductivity sewage, more advanced and more complex treatment technologies need to be used, which will increase the energy consumption and operation cost of the sewage plant. The existing technologies mainly focus on the flow control of the sewage pipe network, and there is still a lack of a scientific, effective and accurate measure to control the water quality of the drainage of industrial enterprises. Therefore, how to realize the reasonable and stable conductivity of the inflow of the sewage plant is increasingly urgent.

[0003] A sewage pipe network water quality monitoring device with the application number CN202410042504.3 is disclosed, which comprises a box body, a sewage passage, a timely temperature control assembly, an automatic temperature adjusting assembly, a water power pipe sealing assembly, a surrounding cleaning assembly, a cleaning water power assembly, a heating box and a fixing seat. The heating box is fixedly arranged in the box body, the sewage passage is fixedly arranged on the outer wall of the heating box, the fixing seat is fixedly arranged on the heating box, the timely temperature control assembly is rotatably arranged on the fixing seat, the automatic temperature adjusting assembly is fixedly arranged on the heating box, the water power pipe sealing assembly is fixedly arranged on the outer wall of the heating box, the surrounding cleaning assembly is arranged in the heating box, and the cleaning water power assembly is rotatably arranged on the fixing seat. The timely temperature control assembly, the surrounding cleaning assembly and the cleaning water power assembly are arranged to solve the problems that the sewage pipe network water quality monitoring device on the market cannot adjust the sewage temperature and cannot clean the stains on the monitoring head with the sewage itself as the power. However, the inflow water quality problem of the sewage plant is not concerned, and real-time, accurate and effective treatment measures cannot be taken in time.

[0004] The Chinese patent application with the application number CN202410020218.7, entitled "Sewage concentration adjustment method into the plant", provides a sewage concentration adjustment method into the plant, relating to the technical field of water ecological management, comprising the following steps: by gradually decomposing the engineering construction within the block, the engineering construction benefit is improved, and the close combination of theory and practice is realized; a closed sewage system is constructed within the block to avoid the occurrence of river water backflow due to high river water level, for blocks that do not have transformation conditions, storage and regulation equipment is constructed to complete the peak-shaving treatment system, which can relieve the operation pressure of the pipe network during the day and night, reduce the probability of pipe network leakage, and reduce the groundwater infiltration amount; a smart monitoring and management system is established for external water intrusion points; a rainwater regulation system is established to relieve the water pressure of the rainwater pipe network and set detection points within the block, detect the water quality of the detection points, compare the detection results with the theoretical data, and review the implementation scheme and the error of the theoretical data; the sewage concentration into the plant is improved, and the technical effects of improving the quality and efficiency of the sewage plant and improving the water quality of the river are realized. However, this method only focuses on peak-shaving discharge in the morning and evening to maximize the treatment efficiency of the sewage plant, and does not involve water quality issues.

[0005] The Chinese patent application with the application number CN202321022609.X, entitled "Sewage pipe network water quality and quantity early warning integrated device", comprises a pipe well, a water level sensor, a turbidity sensor, an electrical conductivity sensor, a temperature sensor, a data collector, a hollow pipe, and a base. The hollow pipe is a multi-section pipe that can be detachably connected, with the top outer wall fixed to the top port of the pipe well wall and the bottom outer wall fixed to the bottom of the pipe well wall, and installed on the upper surface of the base. The water level sensor, turbidity sensor, electrical conductivity sensor, and temperature sensor are independently electrically connected to the data collector through transmission lines, with the other end of the transmission lines placed in the installation box on the surface of the base. The data collector is fixedly installed on the outer wall of the top end of the hollow pipe. This device can collect sensor data through the data collector, then transmit the data wirelessly using a 4G card, and then transmit the data in the data collector to the Internet of Things platform, where the data can be viewed and analyzed, playing a role in early warning of the sewage pipe network. However, this method only provides early warning for poor water quality in the sewage pipe network and does not involve treatment measures for poor water quality. SUMMARY

[0006] The purpose of the invention is to provide a sewage pipe network partition tracing control system and control method to address the problem of excessive electrical conductivity of enterprise sewage water and the lack of timely, accurate, and scientific control measures. When the electrical conductivity of the tail water of the sewage plant exceeds the standard, the control system calculates the flow of sewage discharged along the pipe network, controls the sewage discharge flow and time, and ensures that the electrical conductivity of the tail water of the sewage plant meets the standard. Through intelligent control, the invention optimizes the dispatching of the sewage discharge of the pipe network system scientifically and accurately, and adjusts to local conditions, thereby ensuring the stable and standard compliance of the tail water quality of the sewage plant.

[0007] Technical solution: The purpose of the application is achieved by the following technical solutions:

[0008] A sewage pipe network partition tracing control system, including a pipe network system (1), an intelligent control system (2) and a sewage plant (3);

[0009] The pipe network system (1) includes: well group (1-1), main pipe (1-2), branch pipe (1-3), inspection well (1-4), enterprise sewage pipe valve (1-5), pipe regulating valve (1-6).

[0010] The intelligent control system (2) includes: conductivity detection device (2-1), integrated detection equipment (2-2), monitoring system (2-3), control system (2-4).

[0011] The sewage plant (3) includes sewage plant inlet valve (3-1), adjusting tank (3-2), sewage treatment system inlet valve (3-3), sewage treatment system (3-4), sewage plant outlet valve (3-5).

[0012] The inspection well (1-4) is provided at the key node of the pipe network system (1), and the integrated detection equipment (2-2) is arranged in the inspection well; the industrial enterprise drainage place is provided with the enterprise sewage pipe valve (1-5), and the integrated detection equipment (2-2) is arranged behind the enterprise sewage pipe valve; the integrated detection equipment (2-2) is used for real-time monitoring to obtain liquid level, flow rate, flow, conductivity and other data, and the monitoring data is sent to the monitoring system (2-3) and the control system (2-4).

[0013] The pipe network system (1) has more than one sewage plant inlet pipe, and the sewage plant inlet valve (3-1) and the integrated detection equipment (2-2) are arranged on the sewage plant inlet pipe. The sewage first enters the sewage plant (3) through the sewage plant inlet pipe, then enters the adjusting tank (3-2), then enters the sewage treatment system (3-4) through the sewage treatment system inlet valve (3-3), and then is discharged through the sewage plant outlet valve (3-5) after being treated. The conductivity detection device (2-1) is installed behind the sewage plant outlet valve (3-5), and the monitoring data is sent to the monitoring system (2-3) and the control system (2-4). The monitoring system preliminarily judges the data sent, when the monitoring system (2-3) monitors that the conductivity of the tail water of the sewage plant exceeds the standard, the control system (2-4) starts to work, the sewage plant outlet valve (3-5) is closed, and the control system (2-4) analyzes and calculates according to the monitoring data of each node of the pipe network system (1), so that the conductivity of the tail water of the sewage plant meets the discharge requirements.

[0014] The control method of the above sewage pipe network partition tracing control system comprises the following steps:

[0015] Operating Condition 1: If the conductivity detection device (2-1) installed after the effluent valve (3-5) of the sewage treatment plant detects that the conductivity of the effluent from the sewage treatment plant is σ≤σ0, which meets the discharge requirements, then regardless of the monitoring results of the conductivity detection devices (2-1) and the integrated detection equipment (2-2) before it, the effluent can be discharged smoothly.

[0016] Note:

[0017] σ represents the conductivity of the wastewater effluent from the wastewater treatment plant, in S / m;

[0018] σ0 is the permissible conductivity of the wastewater effluent from the wastewater treatment plant, in S / m.

[0019] Condition 2: The conductivity σ of the wastewater effluent does not meet the discharge requirements. The conductivity σ1 of the wastewater at the inlet valve (3-3) of the wastewater treatment system is ≤ (1.5~2.0)σ0. The exceedance at the inlet valves of the regulating tanks of each pipeline is within the allowable range. Then, the inlet valves of the regulating tanks are further regulated and the flow rate is calculated.

[0020] The inspection wells at the inlet pipes of each sewage treatment plant are named W1, W2, ..., W n It is equipped with an integrated detection device (2-2) for real-time monitoring of data such as liquid level, flow rate, flow volume, and conductivity.

[0021] When the monitoring system (2-3) detects that the conductivity at the inlet valve exceeds the standard, the degree of exceedance is judged. The judgment steps are as follows:

[0022] First, the conductivity of each water inlet pipe exceeded the standard by a factor of B. i Perform the calculation:

[0023]

[0024] Note:

[0025] B i Inspection well W at the inlet pipe of the sewage treatment plant i The number of times the limit was exceeded was dimensionless.

[0026] σ i Inspection well W at the inlet pipe of the sewage treatment plant i The electrical conductivity of the wastewater, S / m.

[0027] σ0 is the permissible conductivity of the wastewater effluent from the wastewater treatment plant, in S / m.

[0028] If B i If the value is ≤(0.5~1), then the water intake meets the requirements and can flow smoothly.

[0029] If B i If the flow rate is greater than (0.5~1), the influent flow rate does not meet the requirements and needs to be adjusted. Solve the following equation to obtain the allowable influent flow rate.

[0030]

[0031] Note:

[0032] q i The flow rate of the sewage plant inlet pipe inspection well W i , m 3 / s.

[0033] The allowable inflow of the sewage plant inlet pipe that exceeds the standard, m 3 / s.

[0034] When there are two or more B i (0.5-1), the following should be met:

[0035]

[0036] If the final arbitrary is obtained, the exceeding degree is within a controllable range, and only the sewage plant inlet valve (3-1) needs to be adjusted to make its flow rate

[0037] Case 3: When the sewage treatment system inlet valve (3-3) has sewage conductivity σ1>(1.5-2.0)σ0, or the sewage plant inlet pipe valve exceeds the allowable range, the inflow and proportion of each inlet point of the pipe network system are adjusted to control the sewage plant adjusting pool conductivity to meet the requirements, so as to ensure that the sewage plant tail water meets the discharge requirements, and the control steps are as follows:

[0038] The topological structure of the sewage pipe network in the area is obtained, and each sewage plant inlet pipe inspection well is named as W1, W2, …, W n , the inspection well at the key node of the sewage main pipe is named as W i-1 , W i-2 , …, W i-m , the inspection well at the key node of the sewage branch pipe is named as W i-j-1 , W i-j-2 , …, W i-j-k , each enterprise sewage pipe is named as Q i-j-k-1 , Q i-j-k-2 , …, Q i-j-k-p , and an integrated detection device (2-2) is arranged after each valve (1-5) in the inspection well and the enterprise sewage pipe for real-time monitoring of liquid level, flow rate, flow rate, conductivity and other data.

[0039] From the pipe network end inspection well to the upstream in turn, first check the inspection well W i-1The sewage situation of the sewer, which flows into the inspection well W i-1 The sewage mainly has two kinds, one is from the sewer branch pipe, and the other is from the upstream of the sewer pipe, and the electric conductivity of the two kinds of sewage is monitored and calculated.

[0040] (1), for the sewer branch pipe, according to the inspection well W i-1 The first branch pipe inspection well upstream is W i-1-1 The integrated detection device (2-2) arranged therein sends the monitoring data to the monitoring system (2-3) and the control system (2-4).

[0041] The monitoring system (2-3) makes a preliminary judgment on the electric conductivity σ1 of the sewage sent by the electric conductivity detection device (2-1) at the sewage treatment system inlet valve (3-3).

[0042] If σ i-1-1 ≤(1.2-1.5)σ0, the inlet meets the requirements, and no treatment is needed.

[0043] If σ i-1-1 >(1.2-1.5)σ0, the sewage flow is adjusted, and the adjustment steps are as follows:

[0044] (1a) First, obtain the branch pipe inspection well flow q i-1-1 , electric conductivity σ i-1-1 and the upstream inspection well W i-2 flow q i-2 , electric conductivity σ i-2 and other data.

[0045] Calculate the flow and electric conductivity:

[0046]

[0047] Note:

[0048] σ i-1-1 is the electric conductivity of the branch pipe inspection well W i-1-1 , S / m;

[0049] q i-1-1 is the flow of the branch pipe inspection well W i-1-1 , m 3 / s;

[0050] σ i-2 is the electric conductivity of the branch pipe inspection well W i-2 , S / m;

[0051] q i-2 is the flow of the branch pipe inspection well W i-2 , m 3 / s;

[0052] σ0 is the allowable discharge conductivity of tail water of sewage plant, S / m.

[0053] If this condition is met, the pipeline regulating valve (1-6) set on the branch pipe is adjusted to change its flow rate to The following equation should be met:

[0054]

[0055] Note:

[0056] σ i-1-1 is the conductivity of the branch pipe inspection well W i-1-1 , S / m;

[0057] q i-1-1 is the flow rate of the branch pipe inspection well W 3 , m i-2 / s;

[0058] σ i-2 is the conductivity of the branch pipe inspection well W i-2 , S / m;

[0059] q i-2 is the flow rate of the branch pipe inspection well W i-2 , m 3 / s;

[0060] σ0 is the allowable discharge conductivity of tail water of sewage plant, S / m.

[0061] The solution is and the pipeline regulating valve (1-6) is adjusted to have a flow rate of

[0062] If this condition is not met, further investigation is conducted on the sewage collected into the branch pipe inspection well W i-1-1 .

[0063] (1b) First, the sewage discharged by the enterprises collected into this section is judged. If the conductivity measured by the integrated detection equipment (2-2) set on the pipe sections Q i-1-1-1 , Q i-1-1-2 , …, Q i-1-1-p all meet:

[0064] σ i-j-k-p ≤(1.2~1.5)σ0

[0065] then the upstream branch pipe sewage situation should be further investigated according to step (1a).

[0066] If a certain item does not meet, the enterprise that does not meet is regulated, and its flow rate is set to and the conductivity is σ i-1-1-t . The following equation is solved:

[0067]

[0068] Note:

[0069] σ i-1-1-t For polluting enterprise Q i-1-1-t Electrical conductivity, S / m;

[0070] q i-1-1-t For polluting enterprise Q i-1-1-t Traffic, m 3 / s;

[0071] For the enterprises Q that exceeded the pollution discharge standards i-1-1-t Traffic, m 3 / s.

[0072] σ i-1-2 For the branch pipe inspection well W i-1-2 Electrical conductivity, S / m;

[0073] q i-1-2 For the branch pipe inspection well W i-1-2 Traffic, m 3 / s;

[0074] When there are two or more Bs i When the value is greater than (0.5~1), the following conditions should be met:

[0075]

[0076] like The conductivity can be controlled by adjusting the flow rate of wastewater discharged by the enterprise.

[0077] like Then, the investigation should continue according to steps (1a) and (1b) to check the sewage discharge situation of the upstream branch pipe and the enterprises involved. Ultimately, the conductivity of the sewage discharged from the branch pipe should meet the standard.

[0078] (2) For sewage trunk lines flowing into the main sewer, the location is determined by the inspection well W. i-1 The first upstream main pipeline inspection well is W. i-2 The integrated detection equipment (2-2) installed inside sends the monitoring data to the monitoring system (2-3) and the control system (2-4).

[0079] The monitoring system (2-3) makes a preliminary judgment on the sewage conductivity σ1 sent by the conductivity detection device (2-1) at the sewage inlet valve (3-3) of the sewage treatment system.

[0080] If σ i-2 If the influent concentration is ≤(1.2~1.5)σ0, the influent meets the requirements and no treatment is necessary.

[0081] If σ i-2 (1.2~1.5)σ0, then adjust the sewage flow, and the adjustment steps are as follows:

[0082] (2a) First, obtain the inspection well W i-2 upstream of the sewage main pipe of the sewage treatment plant i-2 , conductivity σ i-2 , branch pipe inspection well flow q i-1-1 , conductivity σ i-1-1 and the like.

[0083] Calculate the flow and conductivity thereof:

[0084]

[0085] Note: If the branch pipe inspection well flow changes, then the flow and conductivity are the adjusted flow q i-1-1 and σ i-1-1 .

[0086] If this condition is met, adjust the pipeline regulating valve (1-6) provided on the main pipe to change the flow to The following equation should be met:

[0087]

[0088] Solving gives and adjusting the pipeline regulating valve (1-6) to make the flow

[0089] If this condition is not met, further investigate the branch pipe sewage flowing into the inspection well W i-2 of the main pipe. The investigation steps are similar to step A.

[0090] Advantages: Compared with the prior art, the advantages of the present application are:

[0091] (1) The present application takes the stable and up-to-standard effluent of the sewage treatment plant as the core, and through real-time monitoring of the pipe network system by the monitoring system and the control system, and reasonable determination of the opening and closing of the regulating valve by the intelligent control system, the water quality of the sewage treatment plant can be timely, accurately and effectively ensured within the controllable range, so as to ensure the stable and up-to-standard effluent of the sewage treatment plant.

[0092] (2) Reasonably plan the urban pipe network system. Adapt to local conditions and fully utilize the treatment capacity of the sewage treatment plant.

[0093] (3) Flexible operation, efficient treatment and high control precision. Through the control system, real-time regulation and control of the sewage pipe network system are realized. BRIEF DESCRIPTION OF DRAWINGS

[0094] Figure 1 It is a schematic diagram of the connection relationship of each functional area of a sewage pipe network partition tracing control system.

[0095] Figure 2 It is a plan view of a sewage pipe network partition tracing control system.

[0096] Figure 3 It is a plan view of a sewage plant.

[0097] Figure 4 It is a flow chart of the operation of a sewage pipe network partition tracing control system.

[0098] In the figure: pipe network system: 1, intelligent control system: 2, sewage plant: 3.

[0099] Well group: 1-1, main pipe: 1-2, branch main pipe: 1-3, inspection well: 1-4, enterprise sewage pipe valve: 1-5, pipe regulating valve: 1-6, conductivity detection device: 2-1, integrated detection equipment: 2-2, monitoring system: 2-3, control system: 2-4, sewage plant inlet valve: 3-1, adjusting tank: 3-2, sewage treatment system inlet valve: 3-3, sewage treatment system: 3-4, sewage plant outlet valve: 3-5. DETAILED DESCRIPTION

[0100] The technical solutions of the present application are further described through the following specific examples.

[0101] Referring to Figure 1 , 2 , a sewage pipe network partition tracing control system includes a pipe network system 1, an intelligent control system 2, and a sewage plant 3. The pipe network system 1 includes a well group 1-1, a main pipe 1-2, a branch main pipe 1-3, an inspection well 1-4, an enterprise sewage pipe valve 1-5, and a pipe regulating valve 1-6. The intelligent control system 2 includes a conductivity detection device 2-1, integrated detection equipment 2-2, a monitoring system 2-3, and a control system 2-4. The sewage plant 3 includes a sewage plant inlet valve 3-1, an adjusting tank 3-2, a sewage treatment system inlet valve 3-3, a sewage treatment system 3-4, and a sewage plant outlet valve 3-5.

[0102] In this example, there are two pipe network partitions, with a river as the dividing line. The left side is pipe network partition I, and the right side is pipe network partition II. Each partition discharges sewage through two sewage main pipes to the sewage plant 3. The sewage main pipes have inspection wells 1-4 at the inlet of the sewage plant 3. The inspection wells 1-4 have integrated detection equipment 2-2 for detecting the quality of the sewage flowing into the sewage plant 3. The integrated detection equipment 2-2 is used for real-time monitoring to obtain data such as liquid level, flow rate, flow volume, and conductivity, and sends the monitoring data to the monitoring system 2-3 and the control system 2-4.

[0103] Inspection wells 1-4 are installed at pipeline intersections within each pipeline network zone. Each inspection well 1-4 is equipped with an integrated detection device 2-2 for real-time, segmented monitoring of wastewater quality in each area of ​​the network zone. Pipeline regulating valves 1-6 are installed on each wastewater pipeline to promptly respond to and adjust flow rates when standards are not met. Enterprise wastewater discharge valves 1-5 and integrated detection devices 2-2 are also installed at enterprise discharge pipelines to monitor wastewater quality and regulate flow rates, ensuring the entire wastewater network system is under real-time monitoring and facilitates adjustments.

[0104] Figure 3 This is a plan view of the wastewater treatment plant, for reference. Figure 3 As shown in this embodiment, wastewater treatment plant 3 has two wastewater inlet pipes, each equipped with a wastewater inlet valve 3-1 and an integrated detection device 2-2. Wastewater first enters wastewater treatment plant 3 through the wastewater inlet pipe, then enters the equalization tank 3-2, and after passing through the wastewater treatment system inlet valve 3-3, enters the wastewater treatment system 3-4 for treatment. After treatment, it is discharged through the wastewater effluent valve 3-5. The conductivity detection device 2-1 is installed after the wastewater effluent valve 3-5 and sends the monitoring data to the monitoring system 2-3 and the control system 2-4. The monitoring system makes a preliminary judgment on the sent data. When the monitoring system 2-3 detects that the conductivity of the wastewater effluent exceeds the standard, the control system 2-4 starts working, the wastewater effluent valve 3-5 is closed, and the control system 2-4 analyzes and calculates the monitoring data of each node in the pipeline system 1 to control the conductivity of the wastewater effluent to meet the discharge requirements.

[0105] Example 1

[0106] The conductivity detection device 2-1 installed after the effluent valve 3-5 of the wastewater treatment plant detected that the conductivity σ of the wastewater effluent conforms to the following formula:

[0107] σ≤σ0

[0108] σ represents the conductivity of the wastewater effluent from the wastewater treatment plant, and σ0 represents the permissible discharge conductivity of the wastewater effluent from the wastewater treatment plant. Both are in units of S / m.

[0109] If the water flows through the wastewater treatment system, it will meet the discharge requirements. Depending on the order of the water flow, the data may not meet the requirements due to dilution or other factors before the wastewater treatment plant's effluent valve. However, if the data after the wastewater treatment plant's effluent valve meets the discharge requirements (the data at the final point the water flows through meets the requirements), the water can be discharged smoothly regardless of the monitoring results of the conductivity detection device 2-1 and the integrated detection equipment 2-2 before the wastewater treatment system 3-4.

[0110] If the conductivity detection device 2-1 arranged after the effluent valve 3-5 of the sewage plant detects that the conductivity σ of the tail water of the sewage plant is greater than σ0, the effluent valve 3-5 of the sewage plant is closed.

[0111] Embodiment 2

[0112] The monitoring system 2-3 monitors that the conductivity σ1 of the sewage at the sewage inlet valve 3-3 of the sewage treatment system is less than or equal to (1.5-2.0) σ0, and the conductivity is not over standard; and the integrated detection equipment 2-2 in the inspection well 1-4 at the inlet of the sewage plant 3 monitors that the over-standard situation of the sewage quality flowing into the sewage plant 3 is within the allowable range, then the inlet valve of the adjusting tank is regulated and controlled, the flow rate is calculated, and the conductivity of each sewage inlet pipeline of the pipe network system is monitored. The inspection wells of the sewage inlet pipelines of the sewage plants are respectively named as W1, W2, …, Wn. n The integrated detection equipment 2-2 is arranged in the inspection well, and is used for monitoring data such as liquid level, flow rate, flow, and conductivity in real time.

[0113] When σ1 is greater than (1.5-2.0) σ0, the conductivity at the inlet valve 3-3 is over standard, and the over-standard degree needs to be distinguished, and the distinguishing steps are as follows:

[0114] First, the over-standard multiple B of the conductivity of each inlet pipeline is calculated: i

[0115]

[0116] Note:

[0117] B i is the over-standard multiple of the inspection well W i of the sewage inlet pipeline of the sewage plant, and is dimensionless;

[0118] σ i is the conductivity of the inspection well W i of the sewage inlet pipeline of the sewage plant, and is S / m.

[0119] σ0 is the allowable discharge conductivity of the tail water of the sewage plant, and is S / m.

[0120] If B i is less than or equal to (0.5-1), the inlet water meets the requirements and can flow smoothly;

[0121] If B i is greater than (0.5-1), the inlet water does not meet the requirements, and the passing flow needs to be adjusted, and the allowable passing flow is obtained by solving the following formula:

[0122]

[0123] Note: ​

[0124] σ i is the conductivity of the sewage plant inlet pipe at the inspection well W i , S / m;

[0125] q i is the flow rate of the sewage plant inlet pipe at the inspection well W i , m 3 / s;

[0126] is the allowable inflow of the sewage plant inlet pipe that exceeds the standard, m 3 / s.

[0127] When there are two or more B i (0.5-1), the following conditions should be met:

[0128]

[0129] Finally, any is obtained, and the exceeding degree is within the controllable range. Only the sewage plant inlet valve 3-1 needs to be regulated to make its flow rate

[0130] Example 3

[0131] When the above-mentioned existing is obtained, the exceeding degree exceeds the controllable range, and the inflow and proportion of each inlet point of the sewage pipe network tracing system need to be regulated;

[0132] The topological structure of the sewage pipe network in the region is obtained, and each sewage plant inlet pipe inspection well is named as W1, W2, …, W n , the inspection well at the key node of the sewage main pipe is named as W i-1 , W i-2 , …, W i-m , the inspection well at the key node of the sewage branch main pipe is named as W i-j-1 , W i-j-2 , …, W i-j-k , each enterprise sewage pipe is named as Q i-j-k-1 , Q i-j-k-2 , …, Q i-j-k-p according to its belonging branch pipe, and an integrated detection device 2-2 is arranged after each valve 1-5 in the inspection well and the enterprise sewage pipe for real-time monitoring of liquid level, flow rate, flow, conductivity and other data.

[0133] From the pipe network end inspection well to the upstream in turn, first check the sewage into the inspection well W i-1 , the inspection well W i-1The sewage mainly has two kinds, one is from the sewage branch pipe, and the other is from the upstream of the sewage pipe, and the conductivity of the two kinds of sewage is monitored and calculated respectively.

[0134] (1), for the sewage branch pipe, according to the inspection well W i-1 The first branch pipe inspection well upstream is W i-1-1 The integrated detection device 2-2 arranged in the inspection well W

[0135] The monitoring system 2-3 judges the conductivity σ1 of the sewage sent by the conductivity detection device 2-1 at the sewage treatment system inlet valve 3-3.

[0136] σ i-1-1 (1.2-1.5) σ0, then adjust the sewage flow, and the adjustment steps are as follows:

[0137] (1a) first obtain the branch pipe inspection well flow q i-1-1 , conductivity σ i-1-1 And the flow q i-2 , conductivity σ i-2 , etc. of the upstream inspection well W i-2 of the sewage pipe.

[0138] The flow and conductivity are calculated:

[0139]

[0140] Note:

[0141] σ i-1-1 The conductivity of the branch pipe inspection well W i-1-1 , S / m;

[0142] q i-1-1 The flow of the branch pipe inspection well W i-1-1 , m 3 / s;

[0143] σ i-2 The conductivity of the branch pipe inspection well W i-2 , S / m;

[0144] q i-2 The flow of the branch pipe inspection well W i-2 , m 3 / s;

[0145] σ0 is the allowable discharge conductivity of the tail water of the sewage plant, S / m.

[0146] If the condition is not met, further investigation is carried out on the sewage into the branch pipe inspection well W i-1-1 .

[0147] (1b) judging the sewage discharged by the enterprises merged into this section, if the pipe section

[0148] Q i-1-1-1 , Q i-1-1-2 , …, Q i-1-1-p The conductivity measured by the integrated detection device 2-2 set on the pipe is all satisfied with:

[0149] σ i-j-k-p ≤(1.2-1.5)σ0

[0150] If not, continue to investigate the sewage of the upstream branch pipe according to step (1a).

[0151] If a certain item does not satisfy σ i-j-k-p ≤(1.2-1.5)σ0, then regulate the enterprise that does not satisfy, set its flow rate as and the conductivity as σ i-1-1-t . Solve the following equations:

[0152]

[0153] Note:

[0154] σ i-1-1-t is the conductivity of the sewage enterprise Q i-1-1-t , S / m;

[0155] q i-1-1-t is the flow rate of the sewage enterprise Q i-1-1-t , m 3 / s;

[0156] is the flow rate of the sewage enterprise Q i-1-1-t , m 3 / s.

[0157] σ i-1-2 is the conductivity of the branch pipe inspection well W i-1-2 , S / m;

[0158] q i-1-2 is the flow rate of the branch pipe inspection well W i-1-2 , m 3 / s;

[0159] When there are two or more B i (0.5-1), it should be satisfied with:

[0160]

[0161] Then regulate the conductivity by adjusting the flow rate of the sewage discharged by the enterprise.

[0162] (2) for the upstream of the sewer trunk, according to the inspection well W i-1 The first upstream trunk inspection well is W i-2 The integrated detection device 2-2 arranged therein sends the monitoring data to the monitoring system 2-3 and the control system (2-4).

[0163] The monitoring system 2-3 makes a preliminary judgment on the sewage conductivity σ1 sent by the conductivity detection device 2-1 at the sewage treatment system inlet valve 3-3.

[0164] σ i-2 (1.2-1.5) σ0, the sewage flow is adjusted, and the adjustment steps are as follows:

[0165] (2a) first obtain the inspection well W i-2 Flow q i-2 , conductivity σ i-2 , branch trunk inspection well flow q i-1-1 , conductivity σ i-1-1 and other data.

[0166] The flow and conductivity are calculated:

[0167]

[0168] Note: if the branch trunk inspection well flow changes, the flow and conductivity are q i-1-1 , σ i-1-1 after adjustment.

[0169] If the condition is met, adjust the pipeline regulating valve 1-6 arranged on the trunk to change the flow to The following equation should be satisfied:

[0170]

[0171] Solving gives and adjusting the pipeline regulating valve 1-6 to make its flow

Claims

1. A sewer network zonal tracing control system, characterized in that, It comprises a pipe network system (1), an intelligent control system (2) and a sewage plant (3); The pipe network system (1) transports the sewage discharged in each subarea to the sewage plant through a sewage main pipe; detection devices of the intelligent control system (2) are arranged at key nodes and cross positions of the pipe network system, front and back positions of each functional area of the sewage plant, for obtaining sewage quality data including liquid level, flow rate, flow volume and conductivity in real time, and providing the data to a monitoring system and a control system of the intelligent control system; the control system adjusts the opening degree of the regulating valve on the pipe network system (1) and the connecting pipe of the sewage plant according to the real-time data and each parameter threshold value, so as to control the operation of the sewage plant; The pipe network system (1) comprises a well group (1-1), a main pipe (1-2), a branch main pipe (1-3), an inspection well (1-4), an enterprise sewage pipe valve (1-5) and a pipe regulating valve (1-6); The intelligent control system (2) comprises a conductivity detection device (2-1), an integrated detection device (2-2), a monitoring system (2-3) and a control system (2-4); The sewage plant (3) comprises a sewage plant inlet valve (3-1), a regulating tank (3-2), a sewage treatment system inlet valve (3-3), a sewage treatment system (3-4) and a sewage plant outlet valve (3-5); The main pipe (1-2) and the branch main pipe (1-3) of the pipe network system (1) are provided with the inspection well (1-4) at the cross position, and the inspection well is provided with the integrated detection device (2-2) for real-time segmented monitoring of the water quality of the sewage discharged in each area of the pipe network subarea; the pipe regulating valve (1-6) is arranged on the sewage pipe, so that the pipe flow is adjusted in time when the sewage quality is not up to the standard; the enterprise sewage pipe valve (1-5) and the integrated detection device (2-2) are arranged at the enterprise sewage pipe, so as to monitor the sewage quality discharged by the enterprise and adjust the sewage flow discharged by the enterprise, thereby ensuring that the entire sewage pipe network system is under real-time monitoring and convenient adjustment; According to different pipe network inlet water quality conditions, the following three working conditions are divided: Working condition 1: the conductivity detection device (2-1) arranged after the sewage plant outlet valve (3-5) detects that the sewage plant tail water conductivity σ≤σ0 meets the discharge requirement, so that no matter the monitoring results of each conductivity detection device (2-1) and integrated detection device (2-2) before the sewage plant outlet valve (3-5) are how, the sewage can be discharged smoothly; Working condition 2: the conductivity detection device (2-1) arranged after the sewage plant outlet valve (3-5) detects that the sewage plant tail water conductivity σ>σ0 does not meet the discharge requirement, and the sewage conductivity σ1≤1.5σ0 at the sewage treatment system inlet valve (3-3) and the over-standard condition of the sewage plant inlet pipe valve are within the allowable range, so that the regulating tank inlet valve is further adjusted and controlled, and the flow volume is calculated; Working condition 3: The conductivity detection device (2-1) arranged after the sewage plant effluent valve (3-5) detects that the sewage plant tail water conductivity σ>σ0, which does not meet the discharge requirements, and the sewage treatment system inlet valve (3-3) sewage conductivity σ1>1.5σ0, or the sewage plant inlet pipeline valve exceeds the allowable range, then by adjusting the inlet flow and proportion of each inlet point of the pipe network system, the conductivity of the sewage plant regulating tank is controlled to meet the requirements, so as to ensure that the sewage plant tail water meets the discharge requirements; σ is the sewage plant tail water conductivity, S / m; σ1 is the sewage treatment system inlet valve (3-3) sewage conductivity, S / m; σ0 is the sewage plant tail water allowable discharge conductivity, S / m.

2. A sewer network zonal tracing control system according to claim 1, characterized in that, The sewage plant (3) has more than one inlet pipeline, the number of which is based on the number of municipal sewage pipe network partitions, and the sewage plant inlet valve (3-1) and integrated detection equipment (2-2) are installed on the inlet pipeline; the sewage first enters the sewage plant (3) through the sewage plant inlet pipeline, then enters the regulating tank (3-2), and then enters the sewage treatment system (3-4) for sewage treatment after the sewage treatment system inlet valve (3-3), and then is discharged through the sewage plant effluent valve (3-5); the conductivity detection device (2-1) is installed after the sewage plant effluent valve (3-5), and sends the monitoring data to the monitoring system (2-3); the monitoring system preliminarily judges the data sent, when the monitoring system (2-3) monitors that the sewage plant tail water conductivity exceeds the standard, the data is sent to the control system (2-4), and the control system (2-4) analyzes and calculates according to the monitoring data of each node of the pipe network system (1), so as to control the sewage plant tail water conductivity to meet the discharge requirements.

3. The control method of a sewer network zonal tracing control system according to claim 1, characterized in that, For working condition 2: the inspection wells at the inlet pipes of each sewage plant are respectively named as W1, W2, …, W n ; an integrated detection device (2-2) is arranged in the tank for monitoring liquid level, flow rate, flow, and conductivity data in real time; When the monitoring system (2-3) monitors that the sewage treatment system inlet valve (3-3) conductivity exceeds the standard, the degree of over standard is distinguished, and the distinguishing steps are as follows: First, the conductivity of each inlet pipe is calculated as follows: B = (C - C0) / C0 i where C is the measured conductivity, C0is the standard conductivity, and B is the conductivity exceeding multiple. Note: B i For the sewage plant inlet pipeline inspection well W i The exceeding multiple of the standard, dimensionless; σ i inspection well W for the influent pipeline of the sewage plant i the sewage conductivity, S / m; σ0 is the sewage plant tail water allowable discharge conductivity, S / m; If B i ≤ 0.5, the water inflow meets the requirements and can flow smoothly. If B i > 0.5, the water inflow does not meet the requirements, and the flow rate needs to be adjusted, and the following equation is solved to obtain the allowable inflow flow rate Note: q i For the sewage plant inflow pipe inspection well W i The flow rate of m 3 / s; m = allowable inflow for the inflow pipe of the sewage treatment plant 3 / s.

4. The control method of a sewer network zonal tracing control system according to claim 1, characterized in that, For working condition 3, the specific control steps are as follows: the topological structure of the sewage pipe network in the region is obtained, and the inspection wells at the inlet pipes of each sewage plant are respectively named as W1, W2, …, W n , the inspection wells at the key nodes of the sewage main pipes are named as W i-1 , W i-2 , …, W i-m , the inspection wells at the key nodes of the sewage branch pipes are named as W i-j-1 , W i-j-2 , …, W i-j-k , the enterprise sewage pipes are named as Q i-j-k-1 , Q i-j-k-2 , …, Q i-j-k-p according to the branch pipes to which they belong, and an integrated detection device (2-2) is arranged after each valve (1-5) in the inspection well and the enterprise sewage pipe for real-time monitoring of liquid level, flow rate, flow, and conductivity data; From the pipe network end inspection well upstream in turn, first check into the inspection well W i-1 sewage, into the inspection well W i-1 sewage from the main pipe into two kinds, one from the sewage, one from the upstream sewage pipe into two kinds of sewage conductivity monitoring calculation; (1) For sewage branch pipe into, according to the inspection well W i-1 The first branch pipe inspection well upstream is W i-1-1 The integrated detection device (2-2) arranged therein sends monitoring data to the monitoring system (2-3) and the control system (2-4); The monitoring system (2-3) checks the manholes W i-1 of the first upstream branch i-1-1 The conductivity σ i-1-1 of the water is determined If σ i-1-1 ≤ 1.2 σ0, the water meets the requirements and does not need to be treated; If σ i-1-1 >1.2σ0, then the sewage flow is adjusted, and the adjustment steps are as follows: First, obtain the flow rate q of its branch pipe inspection well. i-1-1 Conductivity σ i-1-1 and the inspection well W upstream of the sewage trunk line i-2 Traffic q i-2 Conductivity σ i-2 ; The flow and conductivity are calculated: Note: σ i-1-1 For the inspection well W of the branch pipe i-1-1 conductivity, S / m; q i-1-1 To check the flow of the branch pipe well W i-1-1 m 3 / s; σ i-2 For dry pipe inspection well W i-2 Conductivity, S / m; q i-2 To dry pipe inspection well W i-2 Flow, m 3 / s; σ0 is the sewage plant tail water allowable discharge conductivity, S / m; If this condition is satisfied, the pipeline regulating valve (1-6) provided on the branch main is adjusted to change its flow rate to The following equation should be satisfied. Note: σ i-1-1 for the inspection well W of the branch pipe i-1-1 conductivity, S / m; For the branch pipe inspection well W i-1-1 Flow rate, m 3 / s; σ i-2 For dry pipe inspection well W i-2 Conductivity, S / m; q i-2 To dry pipe inspection well W i-2 Flow, m 3 / s; σ0 is the sewage plant tail water allowable discharge conductivity, S / m; Solving gives and adjusting the pipeline regulating valve (1-6) to a flow of If this condition is not met, further check the inflow of this branch pipe inspection well W i-1-1 sewage further investigation; (2) for the sewage upstream of the confluence, according to the inspection well W i-1 The first upstream inspection well of the main pipe is W i-2 The integrated detection device (2-2) arranged therein sends the monitoring data to the monitoring system (2-3) and the control system (2-4). The monitoring system (2-3) checks the manholes W i-1 The first upstream dry pipe manhole W i-2 The conductivity σ i-2 A preliminary judgement is made; If σ i-2 ≤ 1.2 σ0, the water meets the requirements and does not need to be treated; If σ i-2 >1.2σ0, then the sewage flow is adjusted, and the adjustment steps are as follows: (2a) first acquire its sewer upstream inspection well W i-2 flow rate q i-2 conductivity σ i-2 , branch inspection well flow rate q i-1-1 conductivity σ i-1-1 ; The flow and conductivity are calculated: Note: if the flow of the branch pipe inspection well changes, both the flow and the conductivity are q after the flow is adjusted i-1-1 , σ i-1-1 ; If this condition is satisfied, the pipe regulating valve (1-6) provided on the main pipe is adjusted to change its flow rate to The following equation should be satisfied. Solving gives and adjusting the pipeline regulating valve (1-6) to a flow of If the condition is not met, further check the inflow of the branch sewer of the inspection well W i-2 of the main sewer; the checking steps are similar to step (1).

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