Multi-water-source efficient water reuse regulation system and regulation method

Abstract

The application discloses a kind of multi-source efficient water reuse regulation system and regulation method, the regulation system includes regulating system, industrial workshop, circulation system, control system.Regulating system receives more than one water source with different water quality into regulating pool, control system (4) is connected to regulating system, according to the conductivity demand of regulating pool water body and water source conductivity, the input water volume of exogenous water body is regulated, so that the conductivity in regulating pool meets the conductivity target value of workshop water standard, and each workshop of industrial workshop is supplied with water, control system is connected to circulation system (3), according to the conductivity of wastewater discharged from workshop, the reflux ratio is obtained, and the reflux water of workshop is refluxed into regulating pool to form circulation.The application has the advantages of high long-term management benefit, convenient operation, high regulation benefit and stable performance.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of ecological environment, and particularly relates to a multi-water-source efficient water recycling regulation system and a regulation method. BACKGROUND

[0002] With the rapid development of industrialization and urbanization, the discharge of pollutants from some industries, especially the production wastewater discharge from the metallurgical and iron industry, has led to the aggravation of water pollution. Although the industrial wastewater treatment technology has made certain progress, there are still many problems that are not mature in technology. In particular, some special wastewater, such as industrial wastewater containing heavy metals and having excessive conductivity, has relatively weak treatment technology. From the perspective of water resource utilization, the treatment and recycling of industrial wastewater are of great significance to alleviate water resource shortage. Under this background, improving the efficiency of industrial wastewater treatment and exploring the recycling way of wastewater can not only reduce the dependence on fresh water resources, but also promote the sustainable utilization of resources. By introducing advanced industrial wastewater treatment mode and technology, the environmental protection level of enterprises can be improved, and the market competitiveness of enterprises can be enhanced, so as to promote the sustainable development of economy. Therefore, green treatment of industrial wastewater, reduction of wastewater discharge and improvement of reflux ratio are the inevitable requirements for protecting ecological environment and realizing sustainable development.

[0003] The application number CN201410329583.2 is a drilling waste mud recycling water plugging and profile control process method, which comprises the following steps: using a high-pressure sewage gun to flush the waste mud in the waste mud pool, using a small crane to lower a submersible mud pump into the waste mud pool for stirring, and using a mud tank truck to transport the recovered mud to the water plugging and profile control site; adding reagents to adjust the waste mud into a water plugging and profile control plugging agent, and then pumping into a stir tank for fully stirring and curing by a stirrer; early strong plug, main body plug and sealing plug are divided into three plugs according to the design amount, and are injected into the oil-water well by an intelligent profile control pump to implement the water plugging and profile control process. The advantages of the present application are: eliminating the pollution caused by the waste mud during the waiting period for solidification; the recovered mud pool does not need to be solidified, and a large amount of mud solidification cost is saved; the recovered waste mud is used as an inorganic plugging agent after adjustment, which meets the requirements of remote plugging in deep strata and improves the overall plugging and profile control process effect. However, the patent uses reagents, and does not consider the multi-water-source recycling system and regulation method.

[0004] The application number CN201410280747.7 contains a salt wastewater treatment and reuse device and method, including a pretreatment system 1, an ultrafiltration treatment system 2, a reverse osmosis treatment system 3, and a negative pressure spray evaporation treatment system 4. Advantages: 1) It can be applied to the preliminary treatment of salt-containing wastewater, such as drainage, circulating water pollution, boiler pollution, and desalination water station resin regeneration; 2) It solves the problem of organic pollutants and hardness in salt-containing wastewater and reduces the salt content; 3) It achieves the purpose of reuse and efficient evaporation of concentrated water to achieve zero discharge; 4) It organically combines pretreatment, ultrafiltration, and reverse osmosis; 5) It maximizes the concentration and reduction of volume by combining roll-type reverse osmosis and flat plate reverse osmosis; 6) It is energy-efficient and achieves the purpose of reuse and zero discharge. However, the patent uses membrane treatment, which has high treatment cost and is prone to secondary pollution. In addition, it does not consider a variety of water source reuse systems and control methods.

[0005] The patent application number CN202122647710.1 discloses an industrial wastewater reuse system, belonging to the technical field of industrial wastewater. It includes a main box, a sterilization lamp installed inside the main box, a drain pipe installed on one side of the main box, a valve installed at the central position of the drain pipe, multiple legs installed below the main box, and a circulating treatment device installed on the side of the main box away from the drain pipe. The circulating treatment device includes activated carbon, a pump body, a mesh box, a liquid return pipe, and a treatment box. The main box has a treatment box installed on the side away from the drain pipe, and a liquid return pipe installed on the main box corresponding to the treatment box. The utility model sets up a circulating treatment device, stirring blades, and a motor, so that the system can recycle and treat industrial wastewater when needed, and can stir the wastewater when needed, making the wastewater treatment more sufficient and improving the working capacity of the system. However, it does not consider the situation where the reused water may not meet the standards.

[0006] The patent application number CN202220460092.1 relates to the technical field of water-jet looms, especially a water-jet loom wastewater reuse system. It includes a machine body, a water inlet on one side of the upper end of the machine body, a drain outlet on the other side of the lower end of the machine body, both the water inlet and the drain outlet being connected to the inside of the machine body, an opening on the upper end of the machine body, a top cover inside the opening, lifting rods on both sides of the upper surface of the top cover, a detachable middle cover on the middle part of the top cover, a connecting rod connected to the output end of the motor, and a impurity removal assembly connected to the connecting rod. The utility model sets up an impurity removal assembly inside the filter assembly, which can regularly remove the particulate matter and thread ends filtered by the filter assembly. For the existing wastewater reuse system, it can conveniently remove the particulate matter and thread ends without disassembly, saving a lot of disassembly and cleaning time and ensuring the normal use of the wastewater reuse system. However, it does not perform targeted treatment on the water quality. SUMMARY

[0007] The application discloses a kind of multi-source efficient water reuse control system and control method, the system includes regulating system, industrial workshop, circulating system, control system.Regulating system has three kinds of water including river water, sewage treatment plant water, workshop backflow water.Different water quality water enters regulating pool, conductivity can be neutralized and diluted, by scheduling river water and sewage treatment plant water, to maximize the use of workshop tail water to recycle, improve backflow ratio to save water resources, respond to the low-carbon environment and control production cost.The conductivity in regulating pool meets the water quality standard of industrial iron and steel, and water is supplied to different water-consuming workshops.For different scale industrial wastewater, the application can use mixing pool to preliminarily control conductivity, promote the green development of heavy industry enterprises.Using control system, scientifically, accurately and timely optimize the scheduling of different water quantity, ensure the stability of water quality in enterprises to improve production stability.Realize the common development of production benefit and social environmental protection benefit, long-term guarantee the excellent and cyclic stability of water in factory area.The application has the advantages of long-term management benefit, convenient operation, high control benefit and stable performance.

[0008] Technical scheme: The purpose of the application is achieved by the following technical scheme:

[0009] A kind of multi-source efficient water reuse control system, including regulating system (1), industrial workshop (2), circulating system (3) and control system (4);Regulating system (1) includes sewage treatment plant water (1-1), river water (1-2), workshop backflow water (1-3) and regulating pool (1-4).The regulating pool (1-4) has three kinds of water including sewage treatment plant water (1-1), river water (1-2) and workshop backflow water (1-3);Control system (4) regulates the water quantity of sewage treatment plant water (1-1) and river water (1-2) according to the conductivity in regulating pool (1-4), so that the conductivity in regulating pool (1-4) meets the conductivity target value σ of workshop water standard.After the conductivity in regulating pool (1-4) meets the workshop water standard, water is supplied to workshop (2-1), (2-2)... (2-n), and control system (4) obtains backflow ratio according to the conductivity of workshop wastewater, then workshop backflow water (1-3) backflows into regulating pool (1-4), forming a cycle.

[0010] A control method based on a multi-source efficient water reuse control system, the steps are as follows:

[0011] Step 1), conductivity detector (4-3) detects the conductivity σ of regulating pool (1-4) 调; conductivity detector (4-1) detects the conductivity σ1 of the sewage treatment plant inflow (1-1), and the conductivity neutralization strength W1 of the sewage treatment plant inflow (1-1) is obtained according to formula (1); conductivity detector (4-2) detects the conductivity σ2 of the river inflow (1-2), and the conductivity neutralization strength W2 of the river inflow (1-2) is obtained according to formula (2); the judging system (4-II) controls the gate valve (4-5) and the gate valve (4-6) according to the conductivity σ 调 of the adjusting tank (1-4) to control the water volume V1 and V2 of the sewage treatment plant inflow (1-1) and the river inflow (1-2), that is, formula (4), so that the conductivity of the adjusting tank (1-4) meets the conductivity standard σ of the workshop water. The flow meter (4-9) displays the water volume V1, and the flow meter (4-10) displays the water volume V2.

[0012]

[0013] σ1: conductivity of sewage treatment plant inflow

[0014]

[0015] σ2: conductivity of river inflow

[0016] σ 调 -σ≤W1V1+W2V2 formula (4)

[0017] σ: conductivity standard of workshop water

[0018] σadjust: conductivity of adjusting tank (1-4)

[0019] V1: water volume of sewage treatment plant inflow (1-1)

[0020] V2: water volume of river inflow (1-2)

[0021] W1: conductivity neutralization strength of sewage treatment plant inflow (1-1)

[0022] W2: conductivity neutralization strength of river inflow (1-2)

[0023] Step 2), the control system (4) controls the gate valve (4-5) to input the sewage treatment plant inflow (1-1) with water volume V1, and the control system (4) controls the gate valve (4-6) to input the river inflow (1-2) with water volume V2. The conductivity detector (4-3) detects the conductivity σ' 调 of the adjusting tank (1-4) after adjustment. The judging system (4-II) judges whether the gate valve (4-7) is opened according to formula (5).

[0024]

[0025] σ: conductivity standard of workshop water

[0026] σ' 调 : conductivity of the adjusted pool (1-4)

[0027] Step 3), after the conductivity of the pool (1-4) is adjusted to the conductivity standard σ of the water used in the workshop, water is supplied to the workshops (2-1), (2-2)...(2-n), the flow meter (4-9) displays the water supply amount, after the water is used in the workshops (2-1), (2-2)...(2-n), the production wastewater enters the mixing pool (3-1), the conductivity detector (4-4) detects the conductivity σ3 of the mixing pool (3-1), the judgment system (4-II) determines the reflux ratio according to σ3, and the formula is formula (6)

[0028]

[0029] σ3: conductivity of the workshop reflux water

[0030] Step 4), the water amount of the workshop reflux water (1-3) is determined according to the reflux ratio, and the formula is formula (7),

[0031] V3 (m) =(V1+V2+V3 (m-1) )×(1-α)×η formula (7)

[0032] V1: water amount of the incoming water of the sewage treatment plant

[0033] V2: water amount of the incoming water of the river

[0034] V3 (m-1) : water amount of the workshop reflux water of the m-1th cycle (1≤m≤n), V3 when m=0 (0) =0

[0035] V3 (m) : water amount of the workshop reflux water of the mth cycle (1≤m≤n)

[0036] α: water loss coefficient of the workshop

[0037] η: reflux ratio

[0038] Step 5), the judgment system (4-II) controls the gate valve (4-8) to make the workshop reflux water (1-3) V3 reflux to the pool (1-4), and the remaining wastewater V4 is discharged. The flow meter (4-12) displays the water amount V3 of the workshop reflux water (1-3), and the flow meter (4-13) displays the water amount V4 of the discharged wastewater. A cycle is formed.

[0039] Advantages:

[0040] Compared with the prior art, the advantages of the present application are:

[0041] (1) According to the conductivity of the wastewater discharged by each industrial workshop, the proportion of recycled water is reasonably set, and the existing river and sewage treatment plant water are used to control and adjust the conductivity of the water body in the adjustment tank, and the water body meeting the production standard conductivity is output to each workshop, and the control effect is good.

[0042] (2) The present application utilizes the characteristics of small conductivity of river inflow and sewage treatment plant inflow, strictly controls the water inflow, reasonably determines the reflux ratio of recycled water body according to the conductivity in the adjustment tank and the conductivity standard of the workshop water, and can ensure the stability of the conductivity in real time and accurately.

[0043] (3) The present application proposes a reasonable dynamic control method based on the maximum bearing value of the conductivity of the recycled workshop, which long-term guarantees the excellent and stability of the water quality of the workshop.

[0044] (4) The present application distributes the respective inflow based on the conductivity neutralization strength W of river inflow and sewage treatment plant inflow, compared with directly using the conductivity of each source inflow, the present application comprehensively considers other water quality index characteristics of the inflow, so that the water quality of the inflow is more stable. BRIEF DESCRIPTION OF DRAWINGS

[0045] Figure 1 It is a plan layout of a multi-water source efficient water recycling control system of the present application;

[0046] Figure 2 It is a principle diagram of the multi-water source efficient water recycling control method of the present application;

[0047] Figure 3 It is a working principle diagram of the control system (4).

[0048] Adjustment system-1, industrial workshop-2, circulation system-3, control system-4;

[0049] Sewage treatment plant inflow-1-1, river inflow-1-2, workshop reflux water-1-3, adjustment tank-1-4;

[0050] Industrial workshop-2, workshop-2-1, workshop-2-2...workshop-2-n;

[0051] Mixing tank-3-1;

[0052] Detection system-4-I, judgment system-4-II, display system-4-III.

[0053] Conductivity detector-4-1, conductivity detector-4-2, conductivity detector-4-3, conductivity detector-4-4.

[0054] Gate valve-4-5, gate valve-4-6, gate valve-4-7, gate valve-4-8.

[0055] Flow meter-4-9, Flow meter-4-10, Flow meter-4-11, Flow meter-4-12, Flow meter-4-13. Detailed Implementation

[0056] The technical solution of the present invention will be further described through the following specific embodiments.

[0057] Example 1

[0058] A multi-source, high-efficiency water reuse and regulation system includes a regulation system 1, an industrial workshop 2, a circulation system 3, and a control system 4. The regulation system 1 includes wastewater treatment plant influent 1-1, river influent 1-2, workshop return water 1-3, and a regulating tank 1-4. All three types of influent—wastewater treatment plant influent 1-1, river influent 1-2, and workshop return water 1-3—are fed into the regulating tank 1-4. The control system 4 regulates the flow rates of wastewater treatment plant influent 1-1 and river influent 1-2 based on the conductivity of the water in the regulating tank 1-4, ensuring that the conductivity of the water in the regulating tank 1-4 meets the target conductivity value σ for the workshop's water usage standards. Once the conductivity of the water in the regulating tank 1-4 meets the workshop's water usage standards, water is supplied to different workshops. The control system 4 calculates the return ratio based on the conductivity of the workshop wastewater, causing the workshop return water 1-3 to flow back into the regulating tank 1-4, forming a circulation.

[0059] The control system 4 includes a detection system 4-Ⅰ, a judgment system 4-Ⅱ, and a display system 4-Ⅲ. The detection system is connected to the judgment system, and the judgment system is also connected to the display system. The detection system detects the detection data of the three types of incoming water and sends it to the judgment system, which then displays it on the display system. The judgment system determines whether the water should continue to flow back or be output to each workshop if it meets the standards, based on the threshold set by the system. The detection system 4-Ⅰ includes a conductivity meter for detecting the conductivity of the wastewater 1-1 from the wastewater treatment plant. The conductivity neutralization intensity W1 can be determined based on the conductivity. The judgment system 4-Ⅱ includes a gate valve. The display system 4-Ⅲ includes one or more flow meters for displaying the flow rates of different incoming waters. Flow meter 4-9 displays the flow rate V1 of the wastewater 1-1 from the wastewater treatment plant, flow meter 4-10 displays the flow rate V2 of the river 1-2, flow meter 4-11 displays the flow rate V1+V2+V3 of the equalization tank 1-4, flow meter 4-12 displays the flow rate V3 of the workshop return water 1-3, and flow meter 4-13 displays the flow rate V4 of the discharged wastewater.

[0060] V3 includes: V3 (0) =0, V3 (1) (i.e., the amount of water returning to the workshop during the first cycle), V3 (2) (i.e., the amount of workshop return water in the second cycle)....V3 (m-1) : The amount of workshop return water in the (m-1)th cycle (1≤m≤n), V3(m) : the water quantity of the inter-plant backflow water of the mth cycle (1≤m≤n) V3 (n) (i.e. the water quantity of the inter-plant backflow water of the nth cycle).

[0061] The multi-water source efficient water recycling control method based on the multi-water source efficient water recycling control system is as follows:

[0062] Step 1), the conductivity detector 4-3 detects that the conductivity σ of the adjusting pool 1-4 is 1200 μs / cm; the conductivity detector 4-1 detects that the conductivity σ1 of the sewage treatment plant incoming water 1-1 is 200 μs / cm, and according to formula (1)

[0063]

[0064] It is obtained that the conductivity neutralization intensity W1 of the sewage treatment plant incoming water 1-1 is 0.6.

[0065] The conductivity detector 4-2 detects that the conductivity σ2 of the riverway incoming water 1-2 is 700 μs / cm, and according to formula (2)

[0066]

[0067] It is obtained that the conductivity neutralization intensity W2 of the riverway incoming water 1-2 is 0.06.

[0068] The judgment system 4-Ⅱ judges according to the conductivity σ of the adjusting pool 1-4 调 =1200 μs / cm, and the conductivities of the sewage treatment plant incoming water 1-1 and the riverway incoming water 1-2 are lower than the conductivity of the inter-plant backflow water 1-3, and the control system 4 can control the gate valve 4-5 and the gate valve 4-6 to control the water quantities V1 and V2 of the sewage treatment plant incoming water 1-1 and the riverway incoming water 1-2 according to the conductivity σ of the adjusting pool 1-4, i.e. formula (4), so that the conductivity in the adjusting pool 1-4 meets the conductivity standard σ of the plant water. 调

[0069] σ 调 -σ≤W1V1+W2V2 formula (4)

[0070] The flow meter 4-9 displays that the water quantity V1 is 50 m 3 , and the flow meter 4-10 displays that the water quantity V2 is 100 m 3 .

[0071] The conductivity σ is 800 μs / cm.

[0072] ​Step 2), the control system 4 controls the gate valve 4-5 to input the water quantity V1 of the sewage treatment plant inflow 1-1, and the control system 4 controls the gate valve 4-6 to input the water quantity V2 of the river inflow 1-2. The conductivity detector 4-3 detects the conductivity σ' of the adjusted water in the adjusting tank 1-4. 调 = 800 μs / cm. The judging system 4-II can judge that the gate valve 4-7 is opened according to formula (5).

[0073]

[0074] σ: the conductivity standard of the water used in the workshop

[0075] σ' 调 : the conductivity of the water adjusted by the adjusting tank (1-4).

[0076] Step 3), when the conductivity of the adjusting tank (1-4) reaches the conductivity standard σ of the water used in the workshop, the water is supplied to each workshop, the flow meter (4-9) displays the water supply quantity, and after the water used in the workshop, the production wastewater enters the mixing tank (3-1), the conductivity detector 4-4 detects the conductivity σ3 of the mixing tank 3-1, and the judging system (4-II) determines the reflux ratio η = 61.41% according to σ3 and formula (6);

[0077]

[0078] Step 4), the water quantity of the workshop reflux water 1-3 is determined according to the reflux ratio, and the formula is formula (7),

[0079] V3 (2) = (V1+V2+V3 (1) )×(1-α)×η

[0080] = (50+100+100)×(1-0.15)×61.41% = 130.5 m 3

[0081] V1: the water quantity of the sewage treatment plant inflow

[0082] V2: the water quantity of the river inflow

[0083] V3 (1) : the water quantity of the workshop reflux water in the first cycle

[0084] V3 (2) : the water quantity of the workshop reflux water in the second cycle

[0085] α: the water consumption loss coefficient of the workshop

[0086] η: the reflux ratio.

[0087] Step 5), the system 4-ll judges to control the gate valve 4-8, so that the water volume V3 of the workshop backflow water 1-3 backflows to the adjusting pool (1-4), and the remaining wastewater volume V4 is discharged. The flow meter 4-12 displays the water volume V3 of the workshop backflow water 1-3, and the flow meter 4-13 displays the water volume V4 of the discharged wastewater = 82 m 3 . The circulation is formed.

Claims

1. A multi-source efficient water reuse regulation system, characterized in that, The system comprises an adjusting system (1), an industrial workshop (2), a circulating system (3) and a control system (4). The adjusting system (1) comprises one or more than one water source with different water quality and an adjusting pool (1-4); the water source comprises sewage treatment plant water (1-1), river water (1-2) and workshop backflow water (1-3), which are all input into the adjusting pool (1-4); the control system (4) is connected to the adjusting system, and the water quantity of the sewage treatment plant water (1-1) and the river water (1-2) is adjusted according to the conductivity of the adjusting pool (1-4) so that the conductivity of the adjusting pool (1-4) meets the conductivity standard σ of the industrial workshop water standard; after the conductivity of the adjusting pool (1-4) meets the workshop water standard, the water is supplied to each workshop of the industrial workshop, and the control system is connected to the circulating system (3) to obtain the backflow ratio according to the conductivity of the workshop wastewater, so that the workshop backflow water (1-3) is backflowed into the adjusting pool (1-4) to form a cycle; The control system (4) comprises a detection system (4-I), a judgment system (4-II) and a display system (4-III); the detection system (4-I) comprises one or more than one conductivity detector, which is installed in the sewage treatment plant water pipeline, the river, the adjusting pool and the mixing pool respectively; the judgment system (4-II) comprises one or more than one gate valve; and the display system (4-III) comprises one or more than one flow meter, which is used for displaying the water quantity of different water sources. In the one or more than one conductivity detector, the conductivity detector (4-1) is used for detecting the conductivity σ1 of the sewage treatment plant water (1-1) and obtaining the conductivity neutralization strength W1 according to formula (1): σ1: the conductivity of the sewage treatment plant water; The conductivity detector (4-2) is used for detecting the conductivity σ2 of the river water (1-2) and obtaining the conductivity neutralization strength W2 according to formula (2): σ2: the conductivity of the river water; The conductivity detector (4-3) is used for detecting the conductivity of the adjusting pool (1-4); and the conductivity detector (4-4) is used for detecting the conductivity of the mixing pool (3-1). The detection system is connected to the judgment system, the judgment system is connected to the display system, the detection system sends the detection data of the three water sources to the judgment system, and the detection data is displayed on the display system; the judgment system determines the water quantity and the backflow ratio of each water source according to the threshold value of the system, and outputs the qualified water to each industrial workshop.

2. The multi-source efficient water reuse control system according to claim 1, wherein, 3. The multi-source efficient water recycling control system according to claim 2, wherein ​ Flow meter (4-9) is installed in the sewage treatment plant inflow pipeline, used to show the sewage treatment plant inflow (1-1) water volume V1; flow meter (4-10) is installed in the river, used to show the river inflow (1-2) water volume V2; flow meter (4-12) is installed in the backwater pipeline, used to show the workshop backflow water (1-3) water volume V3; flow meter (4-11) is installed in the regulating tank output pipeline, used to show the regulating tank (1-4) water supply volume, which is V1+V2+V3; flow meter (4-13) is installed in the system drain pipe, used to show the discharge of wastewater water volume V4.

4. The multi-source efficient water reuse control system according to claim 3, wherein, The conductivity of the sewage treatment plant incoming water (1-1) and the river incoming water (1-2) is lower than that of the workshop backflow water (1-3), and the control system (4) controls the conductivity σ in the adjusting tank (1-4) according to the conductivity σ of the workshop water 调 The water volume V1 and V2 of the sewage treatment plant incoming water (1-1) and the river incoming water (1-2) are obtained according to formula (4), and the gate valve (4-5) and the gate valve (4-6) are controlled to regulate the water volume, so that the conductivity in the adjusting tank (1-4) meets the conductivity standard σ of the workshop water. σ 调 - σ ≤ W1V1 + W2V2 Equation (4) σ: conductivity standard of workshop water; σ 调 : regulating the conductivity of the pool (1-4); V1: sewage treatment plant inflow (1-1) water volume; V2: river inflow (1-2) water volume; W1: sewage treatment plant inflow (1-1) conductivity neutralization strength; W2: river inflow (1-2) conductivity neutralization strength; The judging system (4-II) judges whether the gate valve (4-7) is opened according to the conductivity of the regulating tank (1-4) after adjustment, and the judging formula is formula (5): σ: conductivity standard of workshop water; σ' 调 : conductivity adjusted by the conditioning tank (1-4); The judging system (4-II) obtains the backflow ratio of the recycled water according to the conductivity of the mixing tank (3-1), and controls the gate valve (4-8) according to the backflow ratio.

5. The multi-source efficient water reuse control system according to claim 1, wherein, The circulating system (3) comprises a mixing tank (3-1) and a recycling pipeline, the mixing tank receives water output from each industrial workshop, the conductivity of the wastewater in the mixing tank (3-1) is σ3, the judging system (4-II) determines the backflow ratio η according to σ3, and the judging process is shown in formula (6): σ3: conductivity of wastewater in the mixing tank; The water volume of the workshop backflow water (1-3) is determined according to the backflow ratio η and formula (7), V3 (m) = (V1+V2+V3 (m-1) ) x (1-α) x η Equation (7) V1: sewage treatment plant inflow water volume; V2: river inflow water volume; V3 (m-1) : amount of water of the m-1th circulation of the interplant reflux water (1≤m≤n) V3 (m) : amount of water of the mth circulation of the interplant backflow (1≤m≤n) α: workshop water consumption coefficient; η: backflow ratio.

6. The multi-water source efficient water reuse regulating system and method according to claim 1, wherein, The method comprises the following steps: Step 1) The conductivity σ of the conditioning cell (1-4) is detected by the conductivity meter (4-3). 调 The conductivity meter (4-1) detects the conductivity σ1 of the wastewater (1-1) from the wastewater treatment plant, and calculates the conductivity neutralization intensity W1 of the wastewater (1-1) according to formula (1); the conductivity meter (4-2) detects the conductivity σ2 of the river water (1-2), and calculates the conductivity neutralization intensity W2 of the river water (1-2) according to formula (2); the control system (4) calculates the conductivity σ1 of the river water (1-2) from the equalization tank (1-4) according to the conductivity σ1 of the river water (1-2). 调 The control valves (4-5) and (4-6) regulate the water flow rates V1 and V2 of the wastewater treatment plant inflow (1-1) and river inflow (1-2) according to formula (4), so that the conductivity in the regulating tank (1-4) meets the conductivity standard σ for workshop water use; the flow meter (4-9) displays the water flow rate V1, and the flow meter (4-10) displays the water flow rate V2. σ1: conductivity of sewage treatment plant inflow σ2: conductivity of river inflow σ 调 -σ ≤ W1V1 + W2V2 Equation (4) σ: conductivity standard of workshop water σ 调 : adjusting conductivity of the pool (1-4) V1: sewage treatment plant inflow (1-1) water volume V2: river inflow (1-2) water volume W1: sewage treatment plant inflow (1-1) conductivity neutralization strength W2: river inflow (1-2) conductivity neutralization strength Step 2), the control system (4) controls the gate valve (4-5) to input the sewage treatment plant influent (1-1) with a water volume of V1, and the control system (4) controls the gate valve (4-6) to input the river influent (1-2) with a water volume of V2; the conductivity detector (4-3) detects the conductivity σ' of the adjusted sewage in the adjusting tank (1-4) 调 ; the judgment system (4-II) judges whether the gate valve (4-7) is opened according to formula (5): σ: conductivity standard of workshop water σ' 调 : conductivity adjusted by the conditioning tank (1-4); Step 3), after the conductivity of the regulating tank (1-4) reaches the conductivity standard σ of the workshop water, water is supplied to each workshop, the flow meter (4-11) shows the water supply volume, after the water is used in each workshop, the production wastewater enters the mixing tank (3-1), the conductivity detector (4-4) detects the conductivity σ3 of the mixing tank (3-1), the judging system (4-II) determines the backflow ratio according to σ3, and the judging process is formula (6): σ3: conductivity of wastewater in the mixing tank; Step 4), the water volume of the workshop backflow water (1-3) is determined according to the backflow ratio, and the formula is formula (7), V3 (m) = (V1+V2+V3 (m-1) ) x (1 - a) x η Equation (7) V1: sewage treatment plant inflow water volume V2: river inflow water volume V3 (m-1) : amount of water of the m-1th circulation of the interplant reflux water (1 ≤ m ≤ n) V3 (m) : amount of water of the mth circulation of the interplant backflow water (1 ≤ m ≤ n) α: workshop water consumption coefficient η: backflow ratio Step 5), the judging system (4-II) controls the gate valve (4-8) to make the water quantity V3 of the workshop backflow water (1-3) backflow to the adjusting pool (1-4), and the remaining wastewater quantity V4 is discharged; the flowmeter (4-12) displays the water quantity V3 of the workshop backflow water (1-3), and the flowmeter (4-13) displays the water quantity V4 of the discharged wastewater; circulation is formed.

Images