Underground sewage plant front storage tank and operation method thereof

Abstract

The invention relates to the technical field of underground sewage plants, in particular to an underground sewage plant front regulation and storage tank and an operation method thereof.The underground sewage plant front regulation and storage tank comprises a main water tank, a sludge discharge pipe, an overflow flushing channel and an intelligent electric control module, the main water tank is divided into a plurality of regulation and storage tank cells, and each regulation and storage tank cell is connected with a water inlet channel, a water outlet channel, the sludge discharge pipe and the overflow flushing channel; and the intelligent electrical control module comprises a flood season regulation and storage precipitation mode, a precipitation mode, an underground plant anti-flooding mode and an electric control valve. The method has the advantages that the regulation and storage tank is divided into grids, independent water inlet, water outlet and sludge discharge pipelines are arranged, each grid is provided with a sludge scraper, a sequencing batch operation mode is adopted, water enters each grid of regulation and storage tank in sequence, each grid of regulation and storage tank is rapidly filled with water, the sludge scrapers are used for discharging settled sludge, stirring equipment is not needed, water does not enter an idle regulation and storage tank, the operation number of equipment is reduced, and the whole tank does not need to be flushed; the effects of saving investment, saving water resources and reducing the operation cost are facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of underground sewage treatment plants, and in particular to an underground sewage treatment plant pre-storage tank and its operation method. Background Art

[0002] Underground sewage treatment plants are gradually becoming a new trend and new demand in the construction of urban sewage treatment systems. The disadvantages of fully underground sewage treatment plants, such as high construction and operation and maintenance difficulties, high investment and operation costs, are also obvious. Comparing fully underground sewage treatment plants and conventional above-ground sewage treatment plants of the same scale and the same treatment standard, the lighting energy consumption of underground sewage treatment plants is about 4-6 times that of conventional above-ground sewage treatment plants, the ventilation energy consumption is about 4-6 times that of conventional above-ground sewage treatment plants, and the deodorization energy consumption is about 2-3 times that of conventional above-ground sewage treatment plants. In addition, the ventilation, deodorization and aeration systems account for 40-60% of the energy consumption of the entire underground sewage treatment plant. There is an urgent need for innovative low-carbon energy-saving technical measures in underground sewage treatment plants to solve the problem of excessive operation and maintenance energy consumption in underground sewage treatment plants. Summary of the Invention

[0003] In order to reduce project investment and operation costs, the present invention provides an underground sewage treatment plant pre-storage tank and its operation method.

[0004] The underground sewage treatment plant pre-storage tank and its operation method provided by the present invention adopt the following technical solutions:

[0005] An underground sewage treatment plant pre-storage tank includes a general water tank, a sludge discharge pipe, an overflow flushing channel and an intelligent electrical control module. The general water tank is divided into several storage tanks. Each storage tank is connected to an inlet channel, an outlet channel, a sludge discharge pipe and an overflow flushing channel. The intelligent electrical control module includes a flood season storage and precipitation mode, a precipitation mode, an underground plant flood prevention and soaking mode and an electric control valve. The flood season storage and precipitation mode, the precipitation mode and the underground plant flood prevention and soaking mode are all communicatively connected to the electric control valve. The electric control valve is installed on each storage tank.

[0006] By adopting the above technical solutions, the storage tanks are filled with water in sequence, and each storage tank is quickly filled with water. The idle storage tanks can be used as overflow water tanks and flood prevention water tanks for the underground plant, further ensuring the safety of the underground plant.

[0007] Preferably, the electric control valve includes a plurality of inlet gates, a plurality of outlet valves, a plurality of overflow flushing gates, a plurality of flow meters and a plurality of sludge discharge valves. An inlet channel and an outlet channel are provided in each storage tank. The inside of each storage tank is communicated with the inside of the overflow flushing channel. A sludge hopper is provided in each of the inlet channel and the outlet channel. Each of the inlet gates, each of the outlet valves and each of the sludge discharge valves are respectively installed on the corresponding inlet channel, the corresponding outlet channel and the corresponding sludge hopper. Each of the overflow flushing gates is respectively installed on the corresponding storage tank. Each of the flow meters is respectively installed on the corresponding storage tank.

[0008] By adopting the above technical solution, the idle storage tank can be not filled with water, reducing the number of equipment in operation and eliminating the need for full-tank flushing.

[0009] Preferably, a sludge scraper is fixedly connected to the inside of each storage tank, and the four sludge scrapers are all in communication connection with the intelligent electric control module.

[0010] By adopting the above technical solution, the sediment sludge is removed by the sludge scraper, eliminating the need for stirring equipment. The sludge scraper does not require external water supply, the control system is simple, and the sludge scraping efficiency is relatively high after use.

[0011] Preferably, the four storage tanks adopt a sequential batch operation mode, and the four storage tanks can operate independently.

[0012] By adopting the above technical solution, the entire storage tank operates as a sequential batch primary sedimentation tank, and the primary sedimentation tank in the plant area can be cancelled, reducing the project investment.

[0013] For an underground sewage treatment plant pre-storage tank, the installation height of the overflow flushing gate (8) is denoted as H 1 and the reading of the liquid level gauge in the tank is H 2 The following operation steps are included: Step A: Start the flood season storage and sedimentation mode for storage and sedimentation; Step B: Start the sedimentation mode, and the four storage tanks operate continuously in sequence; Step C: Start the underground plant flood prevention and soaking mode, and start the corresponding overflow flushing gate to enter the corresponding storage tank.

[0014] By adopting the above technical solution, it is convenient to adjust the storage tank through different operation modes to achieve peak shaving and valley filling, water quality balancing, emergency buffering, etc., control rainwater overflow pollution, cope with extreme weather, and improve urban resilience.

[0015] Preferably, in Step A, the specific operation steps of starting the flood season storage and sedimentation mode for storage and sedimentation include: A1: In the initial state; A2: Start the daytime state, open the inlet gate of one of the storage tanks, and according to the liquid level H in the storage tank 2, after reaching the set maximum liquid level, close the corresponding inlet sluice, start the corresponding sludge scraper, and open the inlet sluice of another storage tank. At this time, the other storage tank starts to fill with water; one of the storage tanks operates in the sedimentation mode; A3, and so on, start other storage tanks. If there is no more inflow of water, the remaining storage tanks are idle and the corresponding equipment is closed; A4, start the night state. When the inflow of the sewage treatment plant reaches the trough, the storage and sedimentation mode starts to drain water. Open the corresponding outlet sluice, and the sewage enters the sewage treatment plant through the outlet channel for treatment.

[0016] By adopting the above technical solution, after the liquid level of the first storage tank reaches the lowest again, close the inlet sluice and the sludge scraper of the first storage tank, and the remaining sediment in the sludge hopper in the tank is emptied by the sludge system. And so on, which is beneficial to saving investment, saving water resources and reducing operation costs.

[0017] Preferably, in step B, when starting the flood season storage and sedimentation mode, the specific operation steps of storage and sedimentation include: on the basis of the flood season storage and sedimentation mode, the storage tanks operate continuously in sequence batch, and in combination with the sedimentation inside the corresponding storage tank, adjust the opening and closing time of other storage tanks.

[0018] By adopting the above technical solution, by adopting sequence batch operation, the batch time can be adjusted in combination with the sedimentation effect of the storage tank, the sedimentation effect can be controlled, and various purposes such as saving carbon source and hydrolysis acidification can be achieved.

[0019] Preferably, in step C, when starting the flood season storage and sedimentation mode, the specific operation steps of storage and sedimentation include: start the continuous operation sedimentation mode of two or three storage tanks, and start the overflow flushing sluice of the remaining storage tanks. The overflow sewage flows into the remaining storage tanks through the overflow flushing channel.

[0020] By adopting the above technical solution, when an overflow or flooding accident occurs in a single unit of the underground plant, the overflow water enters the overflow flushing channel and enters the storage tank through the opened overflow flushing sluice to ensure the safety of the underground plant.

[0021] Preferably, it also includes the flood season storage and sedimentation mode, the sedimentation mode and the underground plant flood prevention mode, and multiple modes can be combined for operation.

[0022] By adopting the above technical solution, each tank is an independent system and can be switched or overhauled arbitrarily. Similarly, multiple mode combinations can be selected according to the actual situation for operation.

[0023] In summary, the present invention has the following beneficial technical effects:

[0024] 1. The present invention is provided with several regulating reservoirs. By dividing the regulating reservoirs into compartments, independent inlet, outlet, and sludge discharge pipelines are set up. A sludge scraper is set in each compartment, and the sequential batch operation mode is adopted. Each regulating reservoir is filled with water in sequence. Each regulating reservoir is quickly filled with water, and the sediment sludge is removed by the sludge scraper. There is no need for a stirring device. The idle regulating reservoir does not intake water, reducing the number of operating devices. There is no need for full-pool flushing, which is beneficial to saving investment, conserving water resources, and reducing operating costs;

[0025] 2. In the present invention, the entire regulating reservoir operates as a sequential batch primary sedimentation tank, and the primary sedimentation tank in the plant area can be cancelled, reducing the project investment. Combining the characteristics of the underground plant, the idle regulating reservoir can be used as the overflow water tank and flood prevention water tank of the underground plant, further ensuring the safety of the underground plant;

[0026] 3. In the present invention, the first regulating reservoir can use the sediment supernatant of the second regulating reservoir for tank body flushing, and there is no need to set up a separate flushing device. After the liquid level of the first regulating reservoir reaches the lowest again, the inlet gate and sludge scraper of the first regulating reservoir are closed, and the remaining sediment in the sludge hopper in the tank is emptied by the sludge system, and so on. This is beneficial to saving investment, conserving water resources, and reducing operating costs;

[0027] 4. Compared with the traditional regulating reservoir in front of the plant, the present invention can also achieve peak shaving and valley filling, water quality balancing, emergency buffering, etc., control rainwater overflow pollution, cope with extreme weather, and improve urban resilience. Brief Description of the Drawings

[0028] Figure 1 is a schematic structural diagram of an underground sewage plant front regulating reservoir in an embodiment of the present invention;

[0029] Figure 2 is a schematic structural diagram of an underground sewage plant front regulating reservoir in an embodiment of the present invention;

[0030] Figure 3 is a flow chart of the connection between an underground sewage plant front regulating reservoir and a sewage plant in an embodiment of the present invention;

[0031] Figure 4 is a flow chart of an operation method of a regulating reservoir in an embodiment of the present invention.

[0032] Description of the Reference Numerals: 1, inlet channel; 2, outlet channel; 3, sludge discharge pipe; 4, overflow flushing channel; 5, regulating reservoir; 6, inlet gate; 7, outlet valve; 8, overflow flushing gate; 9, flow meter; 10, sludge discharge valve; 11, inlet pipe; 12, outlet pipe; 13, sludge scraper; 14, sludge hopper. Detailed Embodiments

[0033] The following further elaborates on the present invention in conjunction with the attached Figures 1-4 drawings.

[0034] An embodiment of the present invention discloses an underground pre-storage tank for a sewage treatment plant.

[0035] Referring to Figure 1 、 Figure 2 , it includes a general water tank, a sludge discharge pipe 3, an overflow flushing channel 4 and an intelligent electrical control module. The two ends of the general water tank are respectively connected with a water inlet pipe 11 and a water outlet pipe 12. The general water tank is divided into several regulating tanks 5. For example, Figure 1 it is divided into four regulating tanks 5 in , and according to requirements, it can also be divided into six or other numbers of regulating tanks 5. Each regulating tank 5 is equipped with various gates, which can connect each regulating tank 5 with the water inlet channel 1, the water outlet channel 2, the sludge discharge pipe 3 and the overflow flushing channel 4 respectively. Each grid can operate independently. Each regulating tank 5 is connected with the water inlet channel 1, the water outlet channel 2, the sludge discharge pipe 3 and the overflow flushing channel 4. The intelligent electrical control module includes a flood season regulating and sedimentation mode, a sedimentation mode, an underground plant flood prevention and soaking mode and an electric control valve. The flood season regulating and sedimentation mode, the sedimentation mode and the underground plant flood prevention and soaking mode are all communicatively connected with the electric control valve. The electric control valve is installed on each regulating tank 5.

[0036] Referring to Figure 1 、 Figure 2 , the electric control valve includes several water inlet gates 6, several water outlet valves 7, several overflow flushing gates 8, several flow meters 9 and several sludge discharge valves 10. Each regulating tank 5 is provided with a water inlet channel 1 and a water outlet channel 2. The inside of each regulating tank 5 is communicated with the inside of the overflow flushing channel 4. A sludge hopper 14 is provided in each water inlet channel 11 and each water outlet channel 2; each water inlet gate 6, each water outlet valve 7 and each sludge discharge valve 10 are respectively installed on the corresponding water inlet channel 11, the corresponding water outlet channel 2 and the corresponding sludge hopper 14. Each overflow flushing gate 8 is respectively installed on the corresponding regulating tank 5. Each flow meter 9 is respectively installed on the corresponding regulating tank 5. The number of electric control valves corresponds to the number of regulating tanks 5. When there are four regulating tanks 5, the electric control valve includes four water inlet gates 6, four water outlet valves 7, four overflow flushing gates 8, four flow meters 9 and eight sludge discharge valves 10. Each regulating tank 5 is provided with a water inlet channel 1 and a water outlet channel 2. The inside of each regulating tank 5 is communicated with the inside of the overflow flushing channel 4. Four water inlet channels 1 and four water outlet channels 2 are provided with sludge hoppers 14. Four water inlet gates 6, four water outlet valves 7 and eight sludge discharge valves 10 are respectively installed on the corresponding water inlet channel 1, the corresponding water outlet channel 2 and the corresponding sludge hopper 14. Four overflow flushing gates 8 are respectively installed on the corresponding regulating tank 5. Four flow meters 9 are respectively installed on the corresponding regulating tank 5. Each regulating tank 5 is filled with water in sequence. Each regulating tank 5 is quickly filled with water. The idle regulating tank 5 does not receive water, reducing the number of equipment operations and eliminating the need for full-tank flushing. The entire regulating tank 5 operates as a sequential batch primary sedimentation tank, and the primary sedimentation tank in the plant area can be cancelled, reducing the project investment. Combining the characteristics of the underground plant, the idle regulating tank 5 can be used as an overflow water tank and a flood prevention water tank for the underground plant, further ensuring the safety of the underground plant.

[0037] Refer to Figure 1 、 Figure 2 Inside each storage tank 5, a sludge scraper 13 is fixedly connected. All four sludge scrapers 13 are communicatively connected to the intelligent electrical control module. Using the clarified supernatant of sedimentation in each storage tank 5, the tank body of the storage tank 5 is flushed, eliminating the need to separately set up flushing equipment, saving investment, conserving water resources, reducing operating costs, and using the sludge scraper 13 to remove sediment sludge without the need for stirring equipment.

[0038] Refer to Figure 1 、 Figure 2 The four storage tanks 5 include the first storage tank 5, the second storage tank 5, the third storage tank 5, and the fourth storage tank 5. Adopting a sequential batch operation mode, all four storage tanks 5 can operate independently.

[0039] Refer to Figure 1 、 Figure 2 Flushing the first storage tank 5: Open the outlet gate 7. The sewage in the tank enters the sewage treatment plant through the outlet channel 2. According to the liquid level H 2 in the tank, after reaching the set minimum liquid level, there will be sediment in the tank at this time. It is necessary to open the overflow flushing gates 8 of the first storage tank 5 and the second storage tank 5 for flushing. At this time, a total of two overflow flushing gates 8 are opened. The upper clarified liquid of the second storage tank 5 enters the first storage tank 5 through the overflow flushing channel 4 to flush the sediment in the storage tank 5.

[0040] And so on. The clarified supernatant in the second storage tank 5, the third storage tank 5, and the fourth storage tank 5 can be used to flush the first storage tank 5, the second storage tank 5, and the third storage tank 5 respectively. The fourth storage tank 5 needs to use other reclaimed water or clarified supernatant to enter the fourth storage tank 5 through the overflow flushing channel 4 for flushing.

[0041] The embodiment of the present invention discloses an operation method for a storage tank.

[0042] Refer to Figure 1 、 Figure 3 、 Figure 4 The installation height of the overflow flushing gate is denoted as H 1 The difference between it and the highest liquid level of the storage tank 5 is the flushing water volume. The reading of the liquid level gauge in the tank is H 2 It includes the following operation steps: Step A: Start the flood season storage and sedimentation mode for storage and sedimentation; Step B: Start the sedimentation mode, and the four storage tanks 5 operate continuously in sequence; Step C: Start the underground plant flood prevention and soaking mode, and start the corresponding overflow flushing gate 8 to enter the corresponding storage tank 5.

[0043] Refer to Figure 2 、 Figure 4, in step A, start the flood season storage and sedimentation mode, and operate in the order of the first storage tank 5, the second storage tank 5, the third storage tank 5, and the fourth storage tank 5. The specific operation steps of storage and sedimentation include: A1. In the initial state, all gates, valves, and sludge scrapers 13 are closed;

[0044] A2. Start the daytime state. When the peak inflow arrives, start the function of the storage and sedimentation mode, open the inlet gate 6 of the first storage tank 5, and sewage enters the first storage tank 5. According to the liquid level H in the first storage tank 5 2 , after reaching the set maximum liquid level, close the inlet gate 6 of the first storage tank 5, and start the sludge scraper 13 in the first storage tank 5; open the inlet gate 6 of the second storage tank 5. At this time, the second storage tank 5 starts to receive water, and the first storage tank 5 operates in the sedimentation mode. A sludge concentration meter, a sludge level meter, a sludge discharge pump, etc. can be set in the first storage tank 5, and the sludge discharge method and time can be selected according to the sedimentation situation;

[0045] A3. And so on, start the second storage tank 5 and the third storage tank 5. If there is no more inflow, the fourth storage tank 5 can be idle without starting the equipment, saving energy consumption;

[0046] A4. Start the night state. When the inflow of the sewage treatment plant reaches the low point, the storage and sedimentation mode starts to drain water. Open the outlet gate 7 of the first storage tank 5, and the sewage enters the sewage treatment plant through the outlet channel 2; according to the liquid level H in the tank 2 , after reaching the set minimum liquid level, open the overflow flushing gate 8 of the first storage tank 5, and use the clarified liquid on the upper layer of the second storage tank 5 to flush the first storage tank 5. After the liquid level of the first storage tank 5 reaches the minimum again, close the inlet gate 6 and the sludge scraper 13 of the first storage tank 5, and the remaining sediment in the sludge hopper 14 in the tank is emptied by the sludge system. And so on, drain the sewage in the second storage tank 5 and the third storage tank 5 respectively. After all are completed, all equipment and gates are closed, and the system resumes the standby mode.

[0047] Refer to Figure 2 、 Figure 4 , in step B, start the flood season storage and sedimentation mode. The specific operation steps of storage and sedimentation include: On the basis of the flood season storage and sedimentation mode, the storage tanks 5 operate continuously in sequence batch, and in combination with the sedimentation inside the corresponding storage tank 5, adjust the opening and closing times of other storage tanks 5;

[0048] On the basis of the flood season storage and sedimentation mode, the four storage tanks 5 operate continuously in sequence batch. At this time, generally there is no need to flush the tank body of the storage tank 5, and the peak-shifting storage standby time is not considered, and the storage tank 5 can be further fully utilized;

[0049] Due to the sequential batch operation, the sedimentation effect in the already-operated storage tank 5 can be combined to adjust the time of batches for the four storage tanks 5, control the sedimentation effect, and achieve multiple purposes such as carbon source savings and hydrolysis acidification.

[0050] Refer to Figure 2 、 Figure 4 In step C, start the flood-season storage and sedimentation mode. The specific operation steps for storage and sedimentation include: start the continuous operation sedimentation mode for two or three storage tanks 5, start the overflow flushing gate 8 of the remaining storage tanks 5, and the overflow sewage flows into the remaining storage tanks 5 through the overflow flushing channel 4. In the case of continuous operation, flushing does not need to be considered, and a part of the storage tanks 5 can be saved as a measure to prevent the underground plant from being flooded. For example, select the fourth storage tank 5 as the overflow storage tank for preventing the underground plant from being flooded. At this time:

[0051] The first storage tank 5, the second storage tank 5, and the third storage tank 5 are used in sequence according to the sequential batch sedimentation mode, and the overflow flushing gates 8 of the first storage tank 5, the second storage tank 5, and the third storage tank 5 are always closed;

[0052] The inlet gate 6 and the outlet valve 7 of the fourth storage tank 5, and the two sludge discharge valves 10 of the third storage tank 5 are closed, and the overflow flushing gate 8 of the fourth storage tank 5 is opened; at this time, if an overflow or flooding accident occurs in a single unit of the underground plant, the overflow water enters the overflow flushing channel 4 and enters the storage tank 5 through the opened overflow flushing gate 8 to ensure the safety of the underground plant.

[0053] Refer to Figure 1 、 Figure 2 、 Figure 4 It also includes the flood-season storage and sedimentation mode, the sedimentation mode, and the underground plant flood prevention mode, which can be operated in combination of multiple modes. Each storage tank 5 is an independent system and can be arbitrarily switched or overhauled. The flood-season storage and sedimentation mode, the sedimentation mode, and the underground plant flood prevention mode can be used in any pairwise combination, or in a combination of three, or any one of the modes can be used alone.

[0054] The above are all the preferred embodiments of the present invention, and the protection scope of the present invention is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention should be covered within the protection scope of the present invention.

Claims

1. An underground sewage treatment plant pre-storage tank, characterized by: The invention comprises a main water pool, a mud discharge pipe (3), an overflow flushing channel (4) and an intelligent electrical control module. The main water pool is divided into a plurality of regulating and storing tanks (5). Each regulating and storing tank (5) is connected to an inlet channel (1), an outlet channel (2), a mud discharge pipe (3) and an overflow flushing channel (4). The intelligent electrical control module comprises a flood season regulating and storing sedimentation mode, a sedimentation mode, an underground plant anti-flooding mode and an electric control valve. The flood season regulating and storing sedimentation mode, the sedimentation mode and the underground plant anti-flooding mode are all connected to the electric control valve for communication. The electric control valve is installed on each regulating and storing tank (5).

2. The underground sewage treatment plant pre-storage tank according to claim 1 is characterized by: The electric control valve comprises a plurality of water inlet gates (6), a plurality of water outlet valves (7), a plurality of overflow flushing gates (8), a plurality of flow meters (9) and a plurality of mud discharge valves (10); each of the regulating and storage tanks (5) is provided with a water inlet channel (1) and a water outlet channel (2); the interior of each of the regulating and storage tanks (5) is connected with the interior of the overflow flushing channel (4); each of the water inlet channels (11) and each of the water outlet channels (2) is provided with a mud hopper (14).

3. The underground sewage treatment plant pre-storage tank according to claim 2 is characterized by: Each of the water inlet gates (6), each of the water outlet valves (7) and each of the mud discharge valves (10) are respectively installed on the corresponding water inlet channel (11), the corresponding water outlet channel (2) and the corresponding mud hopper (14); each of the overflow flushing gates (8) are respectively installed on the corresponding regulating reservoir (5); and each of the flow meters (9) are respectively installed on the corresponding regulating reservoir (5).

4. The underground sewage treatment plant pre-storage tank according to claim 3 is characterized by: Each grid of the regulating reservoir (5) is fixedly connected to a scraper (13), and the four scrapers (13) are all communicatively connected to an intelligent electrical control module.

5. The underground sewage treatment plant pre-storage tank according to claim 4 is characterized by: The four-grid regulating and storage tanks (5) adopt a sequential batch operation mode, and the four-grid regulating and storage tanks (5) can all be operated independently.

6. A method for operating a storage tank, characterized in that: The water volume is regulated by using the underground sewage treatment plant pre-regulation reservoir as claimed in claim 5, wherein the installation height of the overflow flushing gate is recorded as H1, and the reading of the liquid level meter in the tank is recorded as H2, including the following operating steps: Step A, starting the flood season regulation and storage sedimentation mode to regulate and store sedimentation; Step B, starting the sedimentation mode, the four-grid regulating and storage tank (5) is operated in a continuous batch sequence; Step C: start the underground plant anti-flooding mode, start the corresponding overflow flushing gate (8) to enter the corresponding storage tank (5).

7. The method for operating a regulating reservoir according to claim 6, characterized in that: In step A, the flood season storage and sedimentation mode is started, and the specific operation steps of storage and sedimentation include: A1, in the initial state; A2, start the daytime state, open the water inlet gate (6) of one of the regulating and storage tanks (5), according to the liquid level H2 in the regulating and storage tank (5), after reaching the set maximum liquid level, close the corresponding water inlet gate (6), start the corresponding scraper (13), open the water inlet gate (6) of another regulating and storage tank (5), and then the other regulating and storage tank (5) starts to take in water; one of the regulating and storage tanks (5) operates in the sedimentation mode; A3. Similarly, other regulating and storage tanks (5) are started. If there is no more water, the remaining regulating and storage tanks (5) are idle and the corresponding equipment is shut down; A4. Start the night mode. The water inflow to the sewage treatment plant reaches a low point. The storage and sedimentation mode starts to drain water. The corresponding outlet gate (6) is opened, and the sewage enters the sewage treatment plant through the outlet channel (2) for treatment.

8. The method for operating a storage pond according to claim 7, wherein in step B, the flood season storage and sedimentation mode is started, and the specific operation steps of storage and sedimentation include: Based on the flood season regulation and sedimentation mode, the regulation and storage tanks (5) can be operated in continuous batches, and the opening and closing times of other regulation and storage tanks (5) can be adjusted in combination with the sedimentation inside the corresponding regulation and storage tanks (5).

9. The method for operating a storage pond according to claim 8, wherein in step C, the flood season storage and sedimentation mode is started, and the specific operation steps of storage and sedimentation include: Two or three storage tanks (5) are started to continuously operate the sedimentation mode, and the overflow flushing gates (8) of the remaining storage tanks (5) are started, and the overflow sewage uses the overflow flushing channel (4) to flow into the remaining storage tanks (5).

10. The method for operating a regulating reservoir according to claim 6, further comprising the flood season regulating sedimentation mode, the sedimentation mode and the underground plant anti-flooding mode, and the plurality of modes can be combined for operation.

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