Accident regulating pool system based on detection cycle optimization of online water quality monitor and operation method thereof

Abstract

The application relates to an accident adjusting pool system based on detection cycle optimization of an online water quality monitor and a running method thereof, which comprises at least three independent accident adjusting pools, a wastewater inlet main pipe, an outlet main pipe, a sampling main pipe and a sample pipe of an online water quality monitor are arranged outside the accident adjusting pools, the accident adjusting pool is connected with the wastewater inlet main pipe through an inlet branch pipe, an inlet valve is arranged on the inlet branch pipe, the accident adjusting pool is connected with the outlet main pipe through an outlet branch pipe, an accident adjusting pool lifting pump is arranged on the outlet branch pipe, a flow pusher, a liquid level meter and a sampling pump are arranged in the accident adjusting pool, the sampling pump is connected with the sampling main pipe through a sampling branch pipe, a sampling valve is arranged on the sampling branch pipe, and the sampling main pipe is connected with the sample pipe of the online water quality monitor. The application can effectively avoid the impact caused by the wastewater seriously exceeding the standard entering the subsequent biochemical treatment system, and guarantees the safe and stable operation of the sewage treatment system.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, specifically to an emergency regulating tank and its operation method based on the optimization of the detection cycle of an online water quality monitor. Background Technology

[0002] Industrial wastewater inevitably experiences significant fluctuations in water quality or short-term exceedances of standards when it is discharged into sewage treatment plants. This can have a major impact on the biological treatment systems of sewage treatment plants, potentially leading to major production accidents or environmental pollution incidents.

[0003] When wastewater exceeding the standard is introduced, the online water quality monitoring instrument analyzes and determines that an accidental influent has occurred. The influent is immediately switched from the equalization tank to the accident tank, and the wastewater exceeding the standard is temporarily stored in the accident tank. Based on the analysis results, the wastewater is pumped into the subsequent biological treatment system at a low flow rate through the accident tank booster pump to reduce the impact on the biological treatment system.

[0004] Because online water quality monitors do not provide real-time monitoring, the detection cycle is typically around one hour. During this cycle, all wastewater exceeding standards may flow into the equalization tank before it can be switched to the emergency tank in time. The emergency tank then fails to function properly, causing the excessive wastewater to impact the subsequent biological treatment system. Furthermore, the sampling location of online water quality monitors is usually near the inlet. Over time, the water quality data changes continuously due to the agitator. There is a time lag between the entry and exit of industrial wastewater from the emergency equalization tank, meaning the online water quality monitor's results cannot accurately guide the subsequent wastewater treatment process. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the existing technology and provide an emergency regulating tank system and its operation method based on the optimization of the detection cycle of an online water quality monitor.

[0006] According to the technical solution provided by the present invention, the emergency regulating pool system based on the optimized detection cycle of the online water quality monitor includes at least three independent emergency regulating pools. A wastewater inlet main pipe, an outlet main pipe, a sampling main pipe, and an online water quality monitor sample supply pipe are provided on the outside of the emergency regulating pools. Each emergency regulating pool is connected to the wastewater inlet main pipe through at least one inlet branch pipe, and an inlet valve is installed on each inlet branch pipe. Each emergency regulating pool is connected to the outlet main pipe through at least two outlet branch pipes, and an emergency regulating pool lift pump is installed on each outlet branch pipe. Each emergency regulating tank is equipped with at least one flow generator, one level gauge and one sampling pump. The sampling pump is connected to the sampling main pipe through sampling branch pipes. A sampling valve is installed on each sampling branch pipe. The sampling main pipe is connected to the sample supply pipe of the online water quality monitor.

[0007] An operation method for an emergency equalization tank system based on the optimized detection cycle of the aforementioned online water quality monitor, the method comprising the following steps: S1. Open any one of the inlet valves and close all other inlet valves. Industrial wastewater enters the corresponding emergency regulating tank from the wastewater inlet main pipe through the inlet valve. S2. When the liquid level in the emergency equalization tank reaches the start-up requirements of the flow mixer, start the flow mixer to stir the wastewater in the emergency equalization tank. S3. When the level gauge in the emergency regulating tank detects that the water level has reached the set value, the inlet valve is closed, and the emergency regulating tank completes the water intake. S4. Open the sampling valve corresponding to the accident regulating pool, start the sampling pump, and after the wastewater in the sampling main pipe is discharged, draw water samples from the sampling main pipe and supply them to the online water quality monitor through the online water quality monitor sample supply pipe. After the sample supply is completed, the online water quality monitor will start the detection. S5. If the online water quality monitor shows that the wastewater exceeds the standard after the test is completed, the wastewater shall be temporarily stored in the emergency regulating tank. Once the online water quality monitor completes its test, if the result shows that the wastewater does not exceed the standard, the booster pump in the emergency regulating tank will be started to pump water to the subsequent biological treatment system through the main outlet pipe of the emergency regulating tank. S6. Open any one of the corresponding inlet valves in the remaining emergency regulating tank, and close all other inlet valves. Industrial wastewater enters the corresponding emergency regulating tank from the wastewater inlet main pipe through the inlet valve. S7. When the liquid level in the emergency equalization tank reaches the start-up requirements of the flow mixer, start the flow mixer to stir the wastewater in the emergency equalization tank. S8. When the level gauge in the emergency regulating tank detects that the water level has reached the set value, the inlet valve is closed, and the emergency regulating tank completes the water intake. S9. Close the sampling valve opened in S4, open the sampling valve corresponding to the emergency regulating pool, start the sampling pump, and after the wastewater in the sampling main pipe is discharged, draw water samples from the sampling main pipe and supply them to the online water quality monitor through the online water quality monitor sample supply pipe. After the sample supply is completed, the online water quality monitor starts to detect. S10. After the online water quality monitoring instrument completes its detection, if it shows that the wastewater exceeds the standard, the wastewater will be temporarily stored in the emergency regulating tank. Once the online water quality monitor completes its test, if the result shows that the wastewater does not exceed the standard and there is already an emergency equalization tank temporarily storing wastewater exceeding the standard, then the booster pumps in both the emergency equalization tank containing the non-standard wastewater and the wastewater exceeding the standard will be started simultaneously. By adjusting the operating frequency of the two booster pumps, the wastewater exceeding the standard and the non-standard wastewater will be mixed in proportion and then pumped into the subsequent biological treatment system through the main outlet pipe of the emergency equalization tank. At the same time, the return water valve of the emergency equalization tank containing the wastewater exceeding the standard will be opened, and by adjusting the three-way valve, a portion of the mixed wastewater will be pumped out from the main outlet pipe and into the emergency equalization tank containing the wastewater exceeding the standard through the return water main pipe, so as to speed up the emptying speed of the emergency equalization tank containing the non-standard wastewater. Once the online water quality monitor completes its test, if the result shows that the wastewater does not exceed the standard and there is no wastewater exceeding the standard temporarily stored in the emergency equalization tank, then the booster pump in the emergency equalization tank containing the wastewater that does not exceed the standard will be started, and water will be pumped to the subsequent biological treatment system through the main outlet pipe of the emergency equalization tank. S11. Repeat steps S6-S10; S12. When all emergency equalization tanks temporarily store wastewater exceeding the standard, the flow rate of the booster pump shall be determined based on the wastewater index in the subsequent biological treatment system, and the source of the wastewater shall be investigated.

[0008] As a preferred option, a return water main is also provided outside the emergency regulating pool. The return water main is connected to the outlet main through a three-way valve. The return water main is connected to each emergency regulating pool through a return water branch pipe, and a return water valve is installed on each return water branch pipe.

[0009] An operation method for an emergency equalization tank system based on the optimized detection cycle of the aforementioned online water quality monitor, the method comprising the following steps: S1. Open any one of the inlet valves and close all other inlet valves. Industrial wastewater enters the corresponding emergency regulating tank from the wastewater inlet main pipe through the inlet valve. S2. When the liquid level in the emergency equalization tank reaches the start-up requirements of the flow mixer, start the flow mixer to stir the wastewater in the emergency equalization tank. S3. When the level gauge in the emergency regulating tank detects that the water level has reached the set value, the inlet valve is closed, and the emergency regulating tank completes the water intake. S4. Open the sampling valve corresponding to the accident regulating pool, start the sampling pump, and after the wastewater in the sampling main pipe is discharged, draw water samples from the sampling main pipe and supply them to the online water quality monitor through the online water quality monitor sample supply pipe. After the sample supply is completed, the online water quality monitor will start the detection. S5. If the online water quality monitor shows that the wastewater exceeds the standard after the test is completed, the wastewater shall be temporarily stored in the emergency regulating tank. Once the online water quality monitor completes its test, if the result shows that the wastewater does not exceed the standard, the booster pump in the emergency regulating tank will be started to pump water to the subsequent biological treatment system through the main outlet pipe of the emergency regulating tank. S6. Open any one of the corresponding inlet valves in the remaining emergency regulating tank, and close all other inlet valves. Industrial wastewater enters the corresponding emergency regulating tank from the wastewater inlet main pipe through the inlet valve. S7. When the liquid level in the emergency equalization tank reaches the start-up requirements of the flow mixer, start the flow mixer to stir the wastewater in the emergency equalization tank. S8. When the level gauge in the emergency regulating tank detects that the water level has reached the set value, the inlet valve is closed, and the emergency regulating tank completes the water intake. S9. Close the sampling valve opened in S4, open the sampling valve corresponding to the emergency regulating pool, start the sampling pump, and after the wastewater in the sampling main pipe is discharged, draw water samples from the sampling main pipe and supply them to the online water quality monitor through the online water quality monitor sample supply pipe. After the sample supply is completed, the online water quality monitor starts to detect. S10. After the online water quality monitoring instrument completes its detection, if it shows that the wastewater exceeds the standard, the wastewater will be temporarily stored in the emergency regulating tank. Once the online water quality monitor completes its test, if the result shows that the wastewater does not exceed the standard and there is already an emergency equalization tank temporarily storing wastewater exceeding the standard, then the booster pumps in both the emergency equalization tank containing the non-standard wastewater and the wastewater exceeding the standard will be started simultaneously. By adjusting the operating frequency of the two booster pumps, the wastewater exceeding the standard and the non-standard wastewater will be mixed in proportion and then pumped into the subsequent biological treatment system through the main outlet pipe of the emergency equalization tank. At the same time, the return water valve of the emergency equalization tank containing the wastewater exceeding the standard will be opened, and by adjusting the three-way valve, a portion of the mixed wastewater will be pumped out from the main outlet pipe and into the emergency equalization tank containing the wastewater exceeding the standard through the return water main pipe, so as to speed up the emptying speed of the emergency equalization tank containing the non-standard wastewater. Once the online water quality monitor completes its test, if the result shows that the wastewater does not exceed the standard and there is no wastewater exceeding the standard temporarily stored in the emergency equalization tank, then the booster pump in the emergency equalization tank containing the wastewater that does not exceed the standard will be started, and water will be pumped to the subsequent biological treatment system through the main outlet pipe of the emergency equalization tank. S11. Repeat steps S6-S10; S12. When all emergency equalization tanks temporarily store wastewater exceeding the standard, the flow rate of the booster pump shall be determined based on the wastewater index in the subsequent biological treatment system, and the source of the wastewater shall be investigated.

[0010] The present invention has the following advantages: 1. In this invention, the wastewater in the emergency regulating tank is fully stirred by the flow mixer before the water quality is tested. The wastewater pumped out by the booster pump has a stable water quality and is closer to the test value, which is conducive to the timely adjustment of the operating parameters of the subsequent biochemical treatment system and reduces the system operating cost. 2. It can effectively prevent the impact caused by wastewater exceeding the standards entering the subsequent biological treatment system, and ensure the safe and stable operation of the sewage treatment system. Attached Figure Description

[0011] Figure 1 This is a system layout diagram of Embodiment 1 of the present invention.

[0012] Figure 2 This is a system layout diagram of Embodiment 2 of the present invention. Detailed Implementation

[0013] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this invention, and not all of them. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0014] The terminology used in the embodiments of this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention. The singular forms “a,” “the,” and “the” as used in the embodiments of this invention and the appended claims are also intended to include the plural forms, and “multiple” generally includes at least two unless the context clearly indicates otherwise.

[0015] Example 1: An emergency regulating tank system based on optimized detection cycle of online water quality monitors, such as... Figure 1 As shown, it includes at least three independent emergency regulating tanks 1. A wastewater inlet main pipe 2, an outlet main pipe 3, a sampling main pipe 4, and an online water quality monitoring instrument sampling pipe 5 are provided on the outside of the emergency regulating tank 1. Each emergency regulating tank 1 is connected to the wastewater inlet main pipe 2 through at least one inlet branch pipe. An inlet valve 1.1 is installed on each inlet branch pipe. Each emergency regulating tank 1 is connected to the outlet main pipe 3 through at least two outlet branch pipes. An emergency regulating tank booster pump 1.2 is installed on each outlet branch pipe. Each emergency regulating tank 1 is equipped with at least one flow generator 1.3, one level gauge 1.4 and one sampling pump 1.5. The sampling pump 1.5 is connected to the sampling main pipe 4 through sampling branch pipes. A sampling valve 1.6 is installed on each sampling branch pipe. The sampling main pipe 4 is connected to the online water quality monitoring instrument sample supply pipe 5.

[0016] The operation method of the emergency equalization tank system based on the above-mentioned optimized detection cycle of the online water quality monitor includes the following steps: S1. Open any one of the inlet valves 1.1, and close all other inlet valves 1.1. Industrial wastewater enters the corresponding emergency regulating tank 1 from the wastewater inlet main pipe 2 through the inlet valve 1.1. S2. When the liquid level of the emergency regulating tank 1 reaches the start-up requirement of the impeller 1.3, the impeller 1.3 is started to stir the wastewater in the emergency regulating tank 1. S3. When the level gauge 1.4 in the emergency regulating tank 1 detects that the water level has reached the set value, the inlet valve 1.1 is closed, and the emergency regulating tank 1 completes the water intake. S4. Open the sampling valve 1.6 corresponding to the accident regulating pool 1, start the sampling pump 1.5, and after the wastewater in the sampling main pipe 4 is discharged, water samples are drawn from the sampling main pipe 4 and supplied to the online water quality monitor through the online water quality monitor sampling pipe 5. After the sampling is completed, the online water quality monitor starts to detect. S5. If the online water quality monitoring instrument shows that the wastewater exceeds the standard after the test is completed, the wastewater shall be temporarily stored in the emergency regulating tank 1. Once the online water quality monitor completes its test, if the water quality is not exceeding the standard, the booster pump 1.2 in the emergency regulating tank 1 will be started, and water will be pumped to the subsequent biological treatment system through the main outlet pipe 3 of the emergency regulating tank. The water quality pumped out from the emergency regulating tank 1 is stable and controllable. The wastewater indicators of the emergency regulating tank 1 serve as the basis for the operation of the subsequent biological treatment system, such as the setting of variables such as dosage and aeration rate. S6. Open any one of the corresponding inlet valves 1.1 in the remaining emergency regulating tank 1, and close all other inlet valves 1.1. Industrial wastewater enters the corresponding emergency regulating tank 1 from the wastewater inlet main pipe 2 through the inlet valve 1.1. S7. When the liquid level of the emergency regulating tank 1 reaches the start-up requirement of the impeller 1.3, the impeller 1.3 is started to stir the wastewater in the emergency regulating tank 1. S8. When the level gauge 1.4 in the emergency regulating tank 1 detects that the water level has reached the set value, the inlet valve 1.1 is closed, and the emergency regulating tank 1 completes the water intake. S9. Close the sampling valve 1.6 opened in S4, open the sampling valve 1.6 corresponding to the emergency regulating pool 1, start the sampling pump 1.5, discharge the wastewater from the sampling main pipe 4 and then extract water samples from the sampling main pipe 4, supply the samples to the online water quality monitor through the online water quality monitor sample supply pipe 5, and after the sample supply is completed, the online water quality monitor starts to detect. S10. After the online water quality monitoring instrument completes the test, if it shows that the wastewater exceeds the standard, the wastewater will be temporarily stored in the emergency regulating tank 1. Once the online water quality monitor completes its test, if the result shows non-standard wastewater and an emergency equalization tank 1 has already temporarily stored excess wastewater, then the booster pumps 1.2 in both the non-standard and excess wastewater in the emergency equalization tank 1 will be activated simultaneously. By adjusting the operating frequency of the two booster pumps 1.2, the excess and non-standard wastewater will be mixed in a specific ratio (ensuring that the mixed wastewater meets the treatment requirements of the subsequent biological treatment system). This mixture will then be pumped into the subsequent biological treatment system through the main outlet pipe 3 of the emergency equalization tank. This significantly reduces the impact on the subsequent biological treatment system, and the water quality pumped into the system is stable and controllable. Furthermore, the water quality parameters after dilution and mixing can be calculated, which can serve as the basis for the operation of the subsequent biological treatment system, such as setting variables like dosage and aeration rate. After the online water quality monitor completes its test, if it shows that the wastewater is not exceeding the standard and there is no wastewater exceeding the standard temporarily stored in the emergency equalization tank 1, then the lift pump 1.2 in the emergency equalization tank 1, which contains wastewater not exceeding the standard, will be started, and water will be pumped to the subsequent biological treatment system through the main outlet pipe 3 of the emergency equalization tank. S11. Repeat steps S6-S10; S12. When all emergency equalization tanks 1 temporarily store wastewater exceeding the standard, the flow rate of booster pump 1.2 shall be determined according to the wastewater index in the subsequent biochemical treatment system, and the source of wastewater shall be investigated.

[0017] The emergency equalization tank system and operation method based on the optimized detection cycle of the online water quality monitor in Example 1 can prevent wastewater exceeding the standard from entering the emergency equalization tank 1 within the detection cycle of the water quality monitor. The wastewater is then pumped into the subsequent biological treatment system by a booster pump, causing an impact on the system. At the same time, it can ensure the stability of the water quality entering the subsequent biological treatment system, providing a reliable basis for the precise control of the subsequent biological treatment process. This can reduce the consumption of energy and chemicals and lower operating costs.

[0018] Example 2: An emergency regulating tank system based on optimized detection cycle of online water quality monitors, such as... Figure 2 As shown, it includes at least three independent emergency regulating tanks 1. A wastewater inlet main pipe 2, an outlet main pipe 3, a sampling main pipe 4, and an online water quality monitoring instrument sampling pipe 5 are provided on the outside of the emergency regulating tank 1. Each emergency regulating tank 1 is connected to the wastewater inlet main pipe 2 through at least one inlet branch pipe. An inlet valve 1.1 is installed on each inlet branch pipe. Each emergency regulating tank 1 is connected to the outlet main pipe 3 through at least two outlet branch pipes. An emergency regulating tank booster pump 1.2 is installed on each outlet branch pipe. At least one flow generator 1.3, one level gauge 1.4 and one sampling pump 1.5 are installed in each emergency regulating pool 1. The sampling pump 1.5 is connected to the sampling main pipe 4 through sampling branch pipes. A sampling valve 1.6 is installed on each sampling branch pipe. The sampling main pipe 4 is connected to the online water quality monitoring instrument sample supply pipe 5. Outside the emergency regulating pool 1, there is also a return water main pipe 6. The return water main pipe 6 is connected to the outlet main pipe 3 through a three-way valve 7. The return water main pipe 6 is connected to each emergency regulating pool 1 through a return water branch pipe. A return water valve 1.7 is installed on each return water branch pipe.

[0019] The operation method of the emergency equalization tank system based on the above-mentioned optimized detection cycle of the online water quality monitor includes the following steps: S1. Open any one of the inlet valves 1.1, and close all other inlet valves 1.1. Industrial wastewater enters the corresponding emergency regulating tank 1 from the wastewater inlet main pipe 2 through the inlet valve 1.1. S2. When the liquid level of the emergency regulating tank 1 reaches the start-up requirement of the impeller 1.3, the impeller 1.3 is started to stir the wastewater in the emergency regulating tank 1. S3. When the level gauge 1.4 in the emergency regulating tank 1 detects that the water level has reached the set value, the inlet valve 1.1 is closed, and the emergency regulating tank 1 completes the water intake. S4. Open the sampling valve 1.6 corresponding to the accident regulating pool 1, start the sampling pump 1.5, and after the wastewater in the sampling main pipe 4 is discharged, water samples are drawn from the sampling main pipe 4 and supplied to the online water quality monitor through the online water quality monitor sampling pipe 5. After the sampling is completed, the online water quality monitor starts to detect. S5. If the online water quality monitoring instrument shows that the wastewater exceeds the standard after the test is completed, the wastewater shall be temporarily stored in the emergency regulating tank 1. Once the online water quality monitor completes its test, if the water quality is not exceeding the standard, the booster pump 1.2 in the emergency regulating tank 1 will be started, and water will be pumped to the subsequent biological treatment system through the main outlet pipe 3 of the emergency regulating tank. The water quality pumped out from the emergency regulating tank 1 is stable and controllable. The wastewater indicators of the emergency regulating tank 1 serve as the basis for the operation of the subsequent biological treatment system, such as the setting of variables such as dosage and aeration rate. S6. Open any one of the corresponding inlet valves 1.1 in the remaining emergency regulating tank 1, and close all other inlet valves 1.1. Industrial wastewater enters the corresponding emergency regulating tank 1 from the wastewater inlet main pipe 2 through the inlet valve 1.1. S7. When the liquid level of the emergency regulating tank 1 reaches the start-up requirement of the impeller 1.3, the impeller 1.3 is started to stir the wastewater in the emergency regulating tank 1. S8. When the level gauge 1.4 in the emergency regulating tank 1 detects that the water level has reached the set value, the inlet valve 1.1 is closed, and the emergency regulating tank 1 completes the water intake. S9. Close the sampling valve 1.6 opened in S4, open the sampling valve 1.6 corresponding to the emergency regulating pool 1, start the sampling pump 1.5, discharge the wastewater from the sampling main pipe 4 and then extract water samples from the sampling main pipe 4, supply the samples to the online water quality monitor through the online water quality monitor sample supply pipe 5, and after the sample supply is completed, the online water quality monitor starts to detect. S10. After the online water quality monitoring instrument completes the test, if it shows that the wastewater exceeds the standard, the wastewater will be temporarily stored in the emergency regulating tank 1. Once the online water quality monitor completes its test, if the result shows non-standard wastewater and an emergency equalization tank 1 has already temporarily stored excess wastewater, then simultaneously start the booster pumps 1.2 in both the non-standard and excess wastewater in the emergency equalization tank 1. By adjusting the operating frequency of the two booster pumps 1.2, the excess and non-standard wastewater are mixed in a specific ratio (ensuring the mixed wastewater meets the treatment requirements of the subsequent biological treatment system). This mixture is then pumped into the subsequent biological treatment system through the main effluent pipe 3 of the emergency equalization tank (this significantly reduces the impact on the subsequent biological treatment system). The water quality supplied to the subsequent biological treatment system is stable and controllable. At the same time, the water quality parameters after dilution and mixing can be calculated. These water quality parameters can also serve as the basis for the operation of the subsequent biological treatment system, such as the setting of variables such as dosage and aeration. Meanwhile, the return water valve 1.7 of the emergency regulating tank 1 containing wastewater exceeding the standard is opened. By adjusting the three-way valve 7, a portion of the mixed wastewater is pumped out from the outlet main pipe 3 and into the emergency regulating tank 1 containing wastewater exceeding the standard through the return water main pipe 6, so as to accelerate the emptying speed of the emergency regulating tank 1 containing non-excessive wastewater. After the online water quality monitor completes its test, if it shows that the wastewater is not exceeding the standard and there is no wastewater exceeding the standard temporarily stored in the emergency equalization tank 1, then the lift pump 1.2 in the emergency equalization tank 1, which contains wastewater not exceeding the standard, will be started, and water will be pumped to the subsequent biological treatment system through the main outlet pipe 3 of the emergency equalization tank. S11. Repeat steps S6-S10; S12. When all emergency equalization tanks 1 temporarily store wastewater exceeding the standard, the flow rate of booster pump 1.2 shall be determined according to the wastewater index in the subsequent biochemical treatment system, and the source of wastewater shall be investigated.

[0020] The emergency equalization tank system and operation method based on the optimized detection cycle of the online water quality monitor in Example 2 can prevent wastewater exceeding the standard from entering the emergency equalization tank 1 within the detection cycle of the water quality monitor. Instead, it is pumped into the subsequent biological treatment system by the booster pump 1.2, causing an impact on the system. At the same time, it can ensure the stability of the water quality entering the subsequent biological treatment system, providing a reliable basis for the precise control of the subsequent biological treatment process. This can reduce the consumption of energy and chemicals, and lower operating costs. Moreover, by adjusting the three-way valve 7, a portion of the mixed wastewater can be pumped from the outlet main pipe 3 and through the return main pipe 6 into the emergency equalization tank 1 containing wastewater exceeding the standard, thereby accelerating the emptying speed of the emergency equalization tank 1 containing non-exceeding standard wastewater and improving the utilization rate of the emergency equalization tank 1.

Claims

1. An operation method for an emergency equalization tank system based on the optimization of the detection cycle of an online water quality monitor, characterized by: The emergency regulating pool system includes at least three independent emergency regulating pools (1). A wastewater inlet main pipe (2), an outlet main pipe (3), a sampling main pipe (4), and an online water quality monitoring instrument sampling pipe (5) are provided on the outside of the emergency regulating pool (1). Each emergency regulating pool (1) is connected to the wastewater inlet main pipe (2) through at least one inlet branch pipe. An inlet valve (1.1) is installed on each inlet branch pipe. Each emergency regulating pool (1) is connected to the outlet main pipe (3) through at least two outlet branch pipes. An emergency regulating pool booster pump (1.2) is installed on each outlet branch pipe. At least one flow generator (1.3), one level gauge (1.4) and one sampling pump (1.5) are installed in each emergency regulating pool (1). The sampling pump (1.5) is connected to the sampling main pipe (4) through sampling branch pipes. A sampling valve (1.6) is installed on each sampling branch pipe. The sampling main pipe (4) is connected to the online water quality monitoring instrument sample supply pipe (5). The operating method includes the following steps: S1. Open any one of the inlet valves (1.1) and close all other inlet valves (1.1). Industrial wastewater enters the corresponding emergency regulating tank (1) from the wastewater inlet main pipe (2) through the inlet valve (1.1). S2. When the liquid level of the emergency regulating tank (1) reaches the start-up requirements of the flow generator (1.3), start the flow generator (1.3) to stir the wastewater in the emergency regulating tank (1); S3. When the level gauge (1.4) in the emergency regulating tank (1) detects that the water level has reached the set value, the inlet valve (1.1) is closed, and the emergency regulating tank (1) completes the water intake. S4. Open the sampling valve (1.6) corresponding to the accident regulating pool (1), start the sampling pump (1.5), discharge the wastewater from the sampling main pipe (4), and then extract water samples from the sampling main pipe (4). Supply the samples to the online water quality monitor through the online water quality monitor sample supply pipe (5). After the sample supply is completed, the online water quality monitor starts to detect. S5. After the online water quality monitoring instrument completes the test, if it shows that the wastewater exceeds the standard, the wastewater will be temporarily stored in the emergency regulating tank (1). Once the online water quality monitor has completed its test, if the result shows that the wastewater does not exceed the standard, the booster pump (1.2) in the emergency regulating tank (1) will be started, and water will be pumped to the subsequent biochemical treatment system through the main outlet pipe (3) of the emergency regulating tank. S6. Open any one of the corresponding inlet valves (1.1) in the remaining emergency regulating tank (1), and close all other inlet valves (1.1). Industrial wastewater enters the corresponding emergency regulating tank (1) from the wastewater inlet main pipe (2) through the inlet valve (1.1). S7. When the liquid level of the emergency regulating tank (1) reaches the start-up requirements of the flow mixer (1.3), start the flow mixer (1.3) to stir the wastewater in the emergency regulating tank (1); S8. When the level gauge (1.4) in the emergency regulating tank (1) detects that the water level has reached the set value, the inlet valve (1.1) is closed, and the emergency regulating tank (1) completes the water intake. S9. Close the sampling valve (1.6) opened in S4, open the sampling valve (1.6) corresponding to the emergency regulating pool (1) in S6, start the sampling pump (1.5), discharge the wastewater from the sampling main pipe (4) and then extract water samples from the sampling main pipe (4), supply the samples to the online water quality monitor through the online water quality monitor sample supply pipe (5), and after the sample supply is completed, the online water quality monitor starts to detect; S10. After the online water quality monitoring instrument completes the test, if it shows that the wastewater exceeds the standard, the wastewater will be temporarily stored in the emergency regulating tank (1). After the online water quality monitor completes the test, if it shows that the wastewater is not exceeding the standard and the wastewater exceeding the standard has been temporarily stored in the emergency regulating tank (1), the booster pump (1.2) in the emergency regulating tank (1) containing both the non-exceeding wastewater and the wastewater exceeding the standard will be started at the same time. By adjusting the operating frequency of the two booster pumps (1.2), the wastewater exceeding the standard and the non-exceeding wastewater will be mixed in proportion and then pumped to the subsequent biochemical treatment system through the main outlet pipe (3) of the emergency regulating tank. After the online water quality monitor completes the test, if it shows that the wastewater is not exceeding the standard and there is no wastewater exceeding the standard temporarily stored in the emergency regulating tank (1), then the booster pump (1.2) in the emergency regulating tank (1) containing the wastewater not exceeding the standard will be started, and water will be pumped to the subsequent biochemical treatment system through the main outlet pipe (3) of the emergency regulating tank. S11. Repeat steps S6-S10; S12. When all emergency regulating tanks (1) temporarily store wastewater exceeding the standard, the flow rate of the booster pump (1.2) is determined according to the wastewater index in the subsequent biochemical treatment system, and the wastewater source is investigated.

2. An operation method for an emergency regulating tank system based on the optimization of the detection cycle of an online water quality monitor, characterized by: The emergency regulating pool system includes at least three independent emergency regulating pools (1). A wastewater inlet main pipe (2), an outlet main pipe (3), a sampling main pipe (4), and an online water quality monitoring instrument sampling pipe (5) are provided on the outside of the emergency regulating pool (1). Each emergency regulating pool (1) is connected to the wastewater inlet main pipe (2) through at least one inlet branch pipe. An inlet valve (1.1) is installed on each inlet branch pipe. Each emergency regulating pool (1) is connected to the outlet main pipe (3) through at least two outlet branch pipes. An emergency regulating pool booster pump (1.2) is installed on each outlet branch pipe. At least one flow generator (1.3), one level gauge (1.4) and one sampling pump (1.5) are installed in each emergency regulating pool (1). The sampling pump (1.5) is connected to the sampling main pipe (4) through sampling branch pipes. A sampling valve (1.6) is installed on each sampling branch pipe. The sampling main pipe (4) is connected to the online water quality monitoring instrument sample supply pipe (5). Outside the emergency regulating pool (1), there is also a return water main pipe (6). The return water main pipe (6) is connected to the outlet main pipe (3) through a three-way valve (7). The return water main pipe (6) is connected to each emergency regulating pool (1) through a return water branch pipe. A return water valve (1.7) is installed on each return water branch pipe. The operating method includes the following steps: S1. Open any one of the inlet valves (1.1) and close all other inlet valves (1.1). Industrial wastewater enters the corresponding emergency regulating tank (1) from the wastewater inlet main pipe (2) through the inlet valve (1.1). S2. When the liquid level of the emergency regulating tank (1) reaches the start-up requirements of the flow generator (1.3), start the flow generator (1.3) to stir the wastewater in the emergency regulating tank (1); S3. When the level gauge (1.4) in the emergency regulating tank (1) detects that the water level has reached the set value, the inlet valve (1.1) is closed, and the emergency regulating tank (1) completes the water intake. S4. Open the sampling valve (1.6) corresponding to the accident regulating pool (1), start the sampling pump (1.5), discharge the wastewater from the sampling main pipe (4), and then extract water samples from the sampling main pipe (4). Supply the samples to the online water quality monitor through the online water quality monitor sample supply pipe (5). After the sample supply is completed, the online water quality monitor starts to detect. S5. After the online water quality monitoring instrument completes the test, if it shows that the wastewater exceeds the standard, the wastewater will be temporarily stored in the emergency regulating tank (1). Once the online water quality monitor has completed its test, if the result shows that the wastewater does not exceed the standard, the booster pump (1.2) in the emergency regulating tank (1) will be started, and water will be pumped to the subsequent biochemical treatment system through the main outlet pipe (3) of the emergency regulating tank. S6. Open any one of the corresponding inlet valves (1.1) in the remaining emergency regulating tank (1), and close all other inlet valves (1.1). Industrial wastewater enters the corresponding emergency regulating tank (1) from the wastewater inlet main pipe (2) through the inlet valve (1.1). S7. When the liquid level of the emergency regulating tank (1) reaches the start-up requirements of the flow mixer (1.3), start the flow mixer (1.3) to stir the wastewater in the emergency regulating tank (1); S8. When the level gauge (1.4) in the emergency regulating tank (1) detects that the water level has reached the set value, the inlet valve (1.1) is closed, and the emergency regulating tank (1) completes the water intake. S9. Close the sampling valve (1.6) opened in S4, open the sampling valve (1.6) corresponding to the emergency regulating pool (1) in S6, start the sampling pump (1.5), discharge the wastewater from the sampling main pipe (4) and then extract water samples from the sampling main pipe (4), supply the samples to the online water quality monitor through the online water quality monitor sample supply pipe (5), and after the sample supply is completed, the online water quality monitor starts to detect; S10. After the online water quality monitoring instrument completes the test, if it shows that the wastewater exceeds the standard, the wastewater will be temporarily stored in the emergency regulating tank (1). After the online water quality monitor finishes its test, if it shows that the wastewater is not exceeding the standard and the wastewater exceeding the standard has already been temporarily stored in the emergency regulating tank (1), the booster pump (1.2) in the emergency regulating tank (1) containing both the non-exceeding wastewater and the wastewater exceeding the standard will be started at the same time. By adjusting the operating frequency of the two booster pumps (1.2), the wastewater exceeding the standard and the non-exceeding wastewater will be mixed in proportion and pumped to the subsequent biochemical treatment system through the main outlet pipe (3) of the emergency regulating tank. At the same time, the return water valve (1.7) of the emergency regulating tank (1) containing the wastewater exceeding the standard will be opened. By adjusting the three-way valve (7), a portion of the mixed wastewater will be pumped out from the main outlet pipe (3) and pumped into the emergency regulating tank (1) containing the wastewater exceeding the standard through the return water pipe (6) to speed up the emptying speed of the emergency regulating tank (1) containing the non-exceeding wastewater. After the online water quality monitor completes the test, if it shows that the wastewater is not exceeding the standard and there is no wastewater exceeding the standard temporarily stored in the emergency regulating tank (1), then the booster pump (1.2) in the emergency regulating tank (1) containing the wastewater not exceeding the standard will be started, and water will be pumped to the subsequent biochemical treatment system through the main outlet pipe (3) of the emergency regulating tank. S11. Repeat steps S6-S10; S12. When all emergency regulating tanks (1) temporarily store wastewater exceeding the standard, the flow rate of the booster pump (1.2) is determined according to the wastewater index in the subsequent biochemical treatment system, and the wastewater source is investigated.

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