Pretreatment pool control method

Abstract

This application discloses a pretreatment tank control method. The device includes a pump house, a primary sedimentation tank, a regulating tank, and an emergency tank. The pump house is located at the bottom of the pretreatment tank control device. The space outside the pump house within the pretreatment tank control device is divided into two layers, one front and one back. The emergency tank is located on the first layer above the pump house, the primary sedimentation tank is located on the second layer above the pump house, and the regulating tank is located on one side of the primary sedimentation tank on the second layer. An regulating tank inlet channel and a regulating tank outlet channel are respectively provided above and below the regulating tank. The regulating tank inlet channel is connected to the top of the regulating tank and the top of the primary sedimentation tank, and the regulating tank outlet channel is connected to the bottom of the regulating tank. An emergency tank sump is provided at the bottom of the emergency tank near the pump house, and an emergency tank vent pipe is provided in the emergency tank sump and extends to the outside of the emergency tank. A primary sedimentation tank sludge discharge pipe is provided at the bottom of the primary sedimentation tank near the pump house and extends to the outside of the primary sedimentation tank. An regulating tank vent pipe is provided at the bottom of the regulating tank, penetrating the bottom of the tank.

Description

Technical Field

[0001] This application relates to the field of wastewater treatment technology, specifically to a method for regulating a pretreatment tank. Background Technology

[0002] Traditional pretreatment tank control methods often rely on a single pretreatment tank, primarily for regulating water quality and quantity and improving wastewater biodegradability. However, in cases of accidents or the need to lift wastewater and sludge, new emergency tanks and pumping stations are frequently required. This inevitably increases land area and construction costs, and the dispersed construction of several different structures hinders management, rendering the pretreatment tank's control inadequate. Therefore, there is an urgent need to develop pretreatment tank control methods that can meet the requirements of regulating water quality and quantity, storing emergency wastewater, venting, and discharging sludge. Summary of the Invention

[0003] The purpose of this application is to provide a pretreatment tank regulation method to solve the problem that there is a lack of pretreatment tank regulation methods in the prior art that can meet the needs of regulating water quality and quantity, storing emergency water, venting and discharging sludge.

[0004] To achieve the above objectives, this application provides a pretreatment tank control method, comprising: a pumping station, a primary sedimentation tank, an equalization tank, and an emergency tank, wherein...

[0005] The pump house is located at the bottom of the pretreatment tank control device. The space outside the pump house within the pretreatment tank control device is divided into two layers, one front and one back. The emergency tank is located on the first layer above the pump house, the primary sedimentation tank is located on the second layer above the pump house, and the regulating tank is located on one side of the primary sedimentation tank on the second layer. The regulating tank has a first regulating tank and a second regulating tank, symmetrically arranged. An regulating tank inlet channel and a regulating tank outlet channel are respectively provided above and below the regulating tank. The regulating tank inlet channel communicates with the top of the regulating tank and the top of the primary sedimentation tank, and the regulating tank outlet channel communicates with the bottom of the regulating tank. An emergency tank sump is located near the bottom of the emergency tank close to the pump house. An emergency tank drain pipe is installed in the emergency tank sump and extends outside the emergency tank. The primary sedimentation tank is located near the bottom of the pump house... The primary sedimentation tank is equipped with a sludge discharge pipe extending outside the primary sedimentation tank. A drain pipe penetrating the bottom of the equalization tank is provided. Inspection ports are located at the upper and lower edges of the left end of the emergency tank, adjacent to the inlet and outlet channels of the equalization tank. The inlet channel of the equalization tank connects to the inspection port above the emergency tank, and the outlet channel connects to the inspection port below the emergency tank. A first, second, and third outlet gate are respectively installed at the outlets where the inlet channel connects to the top of the first and second equalization tanks and the inspection port of the emergency tank. Similarly, a first, second, and third inlet gate are respectively installed at the inlet ports where the outlet channel connects to the inspection port of the emergency tank, the bottom of the second equalization tank, and the bottom of the first equalization tank.

[0006] The pretreatment pool control method includes the following steps:

[0007] Step 1) Close the third outlet gate and the first inlet gate, and open the first outlet gate, the second outlet gate, the second inlet gate and the third inlet gate;

[0008] Step 2) In the event of an accident, open the third outlet gate and close the first outlet gate, the second outlet gate, the second inlet gate, the third inlet gate, and the first inlet gate.

[0009] Step 3) After the accident is handled, open the first inlet gate.

[0010] Optionally, the vent pipe of the emergency pool, the sludge discharge pipe of the primary sedimentation tank, and the vent pipe of the equalization tank are all connected to the main vent pipe, and one end of the main vent pipe extends to the outside of the control device of the pretreatment tank.

[0011] By controlling the flanged butterfly valve on the pipeline, the vented sewage is ultimately discharged through the vent manifold in the form of gravity flow.

[0012] Optionally, multiple submersible mixers are installed at the upper and lower ends of the regulating tank.

[0013] Optionally, a pump house sump is provided at the bottom of the pool in the pump house, and a pump house sump ditch is provided around the bottom of the pool in the pump house, sloping towards the pump house sump. A pump house drainage submersible pump is provided in the pump house sump, and a pump house drainage pipe is connected to the pump house drainage submersible pump and extends to the outside of the pretreatment pool control device.

[0014] Optionally, a primary sedimentation tank sludge discharge pump is installed above the pump room. One end of the primary sedimentation tank sludge discharge pump is connected to the venting main pipe, and the other end is connected to the sludge discharge main pipe. The sludge discharge main pipe extends to the outside of the pretreatment tank control device.

[0015] A regulating tank booster pump is installed below the pump room. One end of the regulating tank booster pump is connected to the pretreatment tank bypass pipe, and the other end is connected to the regulating tank outlet pipe. The left side of the regulating tank outlet pipe is connected to the regulating tank outlet channel, and the right side is connected to the pretreatment tank outlet pipe. One end of the pretreatment tank bypass pipe is connected to the bypass unit treatment structure, and the other end is connected to the pretreatment tank outlet pipe.

[0016] When bypass treatment is performed, the sewage in the outlet pipe of the regulating tank is pumped into the bypass pipe of the pretreatment tank by the regulating tank lift pump.

[0017] The embodiments of this application have the following advantages:

[0018] This application provides a pretreatment tank control method, including: a pump station, a primary sedimentation tank, an equalization tank, and an emergency tank. The pump station is located at the bottom of the pretreatment tank control device. The space within the pretreatment tank control device, excluding the pump station, is divided into two layers, one front-to-back. The emergency tank is located on the first layer above the pump station, the primary sedimentation tank is located on the second layer above the pump station, and the equalization tank is located on one side of the primary sedimentation tank on the second layer. The equalization tank has a first equalization tank and a second equalization tank symmetrically arranged. An equalization tank inlet channel and an equalization tank outlet channel are respectively provided above and below the equalization tank. The equalization tank inlet channel communicates with the top of the equalization tank and the top of the primary sedimentation tank, and the equalization tank outlet channel communicates with the bottom of the equalization tank. An emergency tank sump is located near the bottom of the emergency tank close to the pump station, and an emergency tank vent pipe is installed in the emergency tank sump and extends to the emergency tank. Therefore, outside the primary sedimentation tank, a primary sedimentation tank sludge discharge pipe is installed at the bottom of the primary sedimentation tank near the pump room and extends outside the primary sedimentation tank. The bottom of the equalization tank is provided with an equalization tank vent pipe that penetrates the bottom of the tank. The upper and lower edges of the left end of the emergency tank are provided with emergency tank inspection ports that are close to the equalization tank inlet channel and the equalization tank outlet channel. The equalization tank inlet channel is connected to the emergency tank inspection port above the emergency tank, and the equalization tank outlet channel is connected to the emergency tank inspection port below the emergency tank. The equalization tank inlet channel is provided with a first outlet gate, a second outlet gate, and a third outlet gate at the outlet holes where it connects with the top of the first equalization tank, the top of the second equalization tank, and the emergency tank inspection port, respectively. The equalization tank outlet channel is provided with a first inlet gate, a second inlet gate, and a third inlet gate at the inlet holes where it connects with the emergency tank inspection port, the bottom of the second equalization tank, and the bottom of the first equalization tank, respectively.

[0019] The pretreatment tank control method includes the following steps: Step 1) Close the third outlet gate and the first inlet gate, and open the first outlet gate, the second outlet gate, the second inlet gate and the third inlet gate; Step 2) In the event of an accident, open the third outlet gate and close the first outlet gate, the second outlet gate, the second inlet gate, the third inlet gate and the first inlet gate; Step 3) After the accident is resolved, open the first inlet gate.

[0020] Compared with existing technologies, this application provides a method for controlling a pretreatment tank using a pretreatment tank control device comprising a pump station, primary sedimentation tank, equalization tank, and emergency tank. By controlling the water flow through a combination of pumps, pipelines, and valves, the pretreatment tank can achieve multiple functions, including regulating water quality and quantity, storing emergency water, venting, and discharging sludge. This solves the problem in existing technologies of lacking a pretreatment tank control method capable of meeting the needs of regulating water quality and quantity, storing emergency water, venting, and discharging sludge. Attached Figure Description

[0021] To more clearly illustrate the embodiments of this application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0022] Figure 1 A schematic diagram of a pretreatment tank control device comprising one layer is provided for a pretreatment tank control method according to an embodiment of this application;

[0023] Figure 2 A schematic diagram of a two-layer structure of a pretreatment tank control device provided in one embodiment of this application for a pretreatment tank control method;

[0024] Figure 3 For the purposes of this application Figure 1 Section 1-1 in the diagram;

[0025] Figure 4 For the purposes of this application Figure 1 Section 2-2 in the middle;

[0026] Figure 5 For the purposes of this application Figure 1 Section 3-3 in the middle;

[0027] Figure 6 For the purposes of this application Figure 1 Section 4-4 in the middle;

[0028] Figure 7 For the purposes of this application Figure 1 Section 5-5 in the diagram;

[0029] Figure 8 For the purposes of this application Figure 1 Section 6-6 in the middle;

[0030] Figure 9 For the purposes of this application Figure 1 Section 7-7 in the diagram. Detailed Implementation

[0031] The following specific embodiments illustrate the implementation of this application. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0032] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Unless otherwise expressly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication of two elements. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0033] Furthermore, the technical features involved in the different embodiments of this application described below can be combined with each other as long as they do not conflict with each other.

[0034] One embodiment of this application provides a method for regulating a pretreatment pool, referencing... Figures 1 to 9 The pretreatment tank control device used in the method includes: an emergency tank 1, a pump room 2, an equalization tank 3, and a primary sedimentation tank 4. The components are connected to form a rectangular pretreatment tank control device.

[0035] The pump house 2 is located on one side of the bottom of the pretreatment tank control device. The space outside the pump house in the pretreatment tank control device is divided into a first and a second layer distributed front and back. The emergency pool is located on the first layer above the pump house. The primary sedimentation tank is located on the second layer above the pump house. The regulating pool is located on one side of the primary sedimentation tank on the second layer.

[0036] An inlet channel 5 and an outlet channel 6 are respectively provided above and below the regulating tank 3. The inlet channel is connected to the top of the regulating tank and the top of the primary sedimentation tank, and the outlet channel is connected to the bottom of the regulating tank.

[0037] An accident pool sump 1.5 is provided at the bottom of the accident pool 1 near the pump house. An accident pool vent pipe 1.4 is provided in the accident pool sump and extends to the outside of the accident pool. A primary sedimentation tank sludge discharge pipe 4.1 is provided at the bottom of the primary sedimentation tank near the pump house and extends to the outside of the primary sedimentation tank. An equalization tank vent pipe penetrating the bottom of the equalization tank is provided at the bottom of the equalization tank.

[0038] Specifically, the lower right corner of the pretreatment tank control device is set up with a pump house 2 for housing various pumps and pipelines. The space outside the pump house 2 in the pretreatment tank control device is divided into a first and second floor with front and back distribution. The upper second floor on the far right, close to the pump house, is set up with a primary sedimentation tank 4 for removing settleable matter, reducing the concentration of suspended solids in sewage and reducing the load on subsequent treatment facilities. The left second floor of the primary sedimentation tank 4 is set up with two sets of regulating tanks 3 for regulating water quality and quantity. The uppermost second floor and the lowermost second floor, close to the regulating tanks 3, are respectively arranged with regulating tank inlet channel 5 and regulating tank outlet channel 6. The first floor is mainly set up with an emergency tank 1 for accommodating production or accidental wastewater that may seriously affect the operation of the sewage treatment plant.

[0039] An accident pool sump 1.5 is installed on the right side of the bottom of the accident pool 1 near the pump room 2 to collect sewage from the bottom of the accident pool 1 during venting. An accident pool vent pipe 1.4 is installed in the accident pool sump 1.5 to drain the sewage from the accident pool 1 and extends to the outside of the accident pool.

[0040] The primary sedimentation tank 4 is equipped with a primary sedimentation tank sludge discharge pipe 4.1 at the bottom of the tank near the pump room 2, which is used to discharge the settled sludge in the primary sedimentation tank 4 or to empty the sewage in the tank, and extends to the outside of the primary sedimentation tank. A primary sedimentation tank outlet hole 4.2 is opened on the common wall of the primary sedimentation tank 4 and the equalization tank inlet channel 5, so that the primary sedimentation tank 4 and the equalization tank inlet channel 5 are connected.

[0041] In some embodiments, the upper and lower edges of the left end of the accident pool 1 are respectively provided with accident pool inspection ports 1.1 for maintenance personnel at the inlet channel 5 and outlet channel 6 of the regulating pool. A ladder 1.3 for maintenance personnel to enter and exit the accident pool 1 is provided on the leftmost wall next to the accident pool inspection port 1.1. A hot-dip galvanized steel grating 1.2 is provided directly above the accident pool inspection port 1.1 to prevent foreign objects and personnel from falling into the accident pool and causing unnecessary damage when no accident maintenance is being carried out.

[0042] In some embodiments, the regulating tank inlet channel 5 is connected to the emergency tank inspection port 1.1 above the emergency tank 1, and the regulating tank outlet channel 6 is connected to the emergency tank inspection port 1.1 below the emergency tank.

[0043] An outlet gate is provided at the outlet of the regulating pool inlet channel 5, which connects to the top of the regulating pool and the inspection port of the emergency pool. An inlet gate is provided at the outlet of the regulating pool outlet channel 6, which connects to the bottom of the regulating pool and the inspection port 1.1 of the emergency pool.

[0044] In some embodiments, the regulating pool 3 is arranged in two sets of identical and symmetrical units, namely the first regulating pool 3.1 and the second regulating pool 3.2, which can serve as backups for each other.

[0045] Specifically, the common wall of the regulating pool inlet channel 5 and the first regulating pool 3.1, the second regulating pool 3.2, and the emergency pool inspection port 1.1 is provided with a first outlet hole 5.1, a second outlet hole 5.3, and a third outlet hole 5.5, respectively. The three outlet holes are the same size and elevation to ensure the uniformity of water distribution. Near the first outlet hole 5.1, the second outlet hole 5.3, and the third outlet hole 5.5, gates for regulating water distribution are respectively provided for regulating water distribution.

[0046] In some embodiments, the common wall of the regulating pool outlet channel 6, the emergency pool inspection port 1.1, the second regulating pool 3.2, and the first regulating pool 3.1 is provided with a first water inlet 6.1, a second water inlet 6.3, and a third water inlet 6.5, respectively. The three water inlets are the same size and elevation to ensure the uniformity of water distribution. Near the first water inlet 6.1, the second water inlet 6.3, and the third water inlet 6.5, gates for regulating water distribution are respectively provided for regulating water distribution.

[0047] At the bottom of the first regulating tank 3.1 and the second regulating tank 3.2, respectively, there are first regulating tank vent pipe 3.5 and second regulating tank vent pipe 3.4 for draining sewage from the tanks.

[0048] In some embodiments, the emergency pool vent pipe 1.4, the primary sedimentation tank sludge discharge pipe 4.1, and the equalization tank vent pipes (first equalization tank vent pipe 3.5 and second equalization tank vent pipe 3.4) are all connected to the main vent pipe 2.7, one end of which extends to the outside of the pretreatment tank control device. The horizontal projections of the two vent pipes are on a straight line with the main vent pipe 2.7.

[0049] In some embodiments, submersible mixers 3.3 are provided at certain intervals near the upper and lower side walls of the equalization tank 3 to promote water flow, increase the flow velocity at the bottom of the tank, prevent sludge from settling, and fully mix suspended solids and sediments and other impurities for better subsequent treatment.

[0050] In some embodiments, a pump house sump 2.1 for collecting sewage from the bottom of the pump house is arranged at the lower right corner of the pool bottom inside the pump house 2. A pump house ditch 2.2 sloping towards the pump house sump 2.1 is arranged around the bottom of the pool inside the pump house 2. A pump house drainage submersible pump 2.3 is installed in the pump house sump 2.1. A pump house drainage pipe 2.4 is connected to the pump house drainage submersible pump 2.3 and extends outside the device. Sewage from the pump house can flow through the pump house ditch 2.2 to the pump house sump 2.1, and then be discharged into the nearest sewage well through the pump house drainage submersible pump 2.3 and the pump house drainage pipe 2.4. Two primary sedimentation tank sludge discharge pumps 2.5 for discharging sludge into the sludge thickening tank are arranged at the upper right corner of the pump house 2. One end of each primary sedimentation tank sludge discharge pump is connected to the vent pipe 2.7, and the other end is connected to the sludge discharge pipe 2.6. Three equalization tank lift pumps 2.10 are installed in the lower left corner to lift sewage to the next treatment structure. One end of each equalization tank lift pump 2.10 is connected to the pretreatment tank bypass pipe 2.8, and the other end is connected to the equalization tank outlet pipe 2.9. Pump foundations 2.11 are installed below each primary sedimentation tank sludge discharge pump 2.5 and equalization tank lift pump 2.10. The left side of the equalization tank outlet pipe 2.9 is connected to the equalization tank outlet channel 6, and the right side is connected to the pretreatment tank outlet pipe 2.13. One end of the pretreatment tank bypass pipe 2.8 is connected to the bypass unit treatment structure, and the other end is connected to the pretreatment tank outlet pipe 2.13. Flanged butterfly valves 2.12 are installed at appropriate locations on each pipe to control the flow of equalized sewage and sludge. Waterproof sleeves 2.14 are installed at the points where the pipes pass through the tank walls and are close to the pipes to protect them.

[0051] The pretreatment pool control method provided in this application includes the following steps:

[0052] Step 1) Close the third outlet gate and the first inlet gate, and open the first outlet gate, the second outlet gate, the second inlet gate and the third inlet gate.

[0053] Specifically, when the device is running, the sewage first flows from the primary sedimentation tank 4 through the primary sedimentation tank outlet 4.2 into the equalization tank inlet channel 5;

[0054] Under normal circumstances: Close the third outlet gate 5.6 of the regulating pool inlet channel and the first inlet gate 6.2 of the regulating pool outlet channel; open the first outlet gate 5.2, the second outlet gate 5.4, the second inlet gate 6.4, and the third inlet gate 6.6 of the regulating pool outlet channel. This allows the sewage in the regulating pool inlet channel 5 to flow into the first regulating pool 3.1 and the second regulating pool 3.2 through the first outlet gate 5.1 and the second outlet gate 5.3, respectively. Then, after the sewage in the first regulating pool 3.1 and the second regulating pool 3.2 is regulated in terms of water quality and quantity, it enters the regulating pool outlet channel 6 through the second inlet gate 6.5 and the third inlet gate 6.3.

[0055] Step 2) In the event of an accident, open the third outlet gate and close the first outlet gate, the second outlet gate, the second inlet gate, the third inlet gate, and the first inlet gate.

[0056] Specifically, in the event of an accident: open the third outlet gate 5.6 of the regulating pool inlet channel, and close the first outlet gate 5.2, the second outlet gate 5.4, the second inlet gate 6.4, the third inlet gate 6.6, and the first inlet gate 6.2 of the regulating pool inlet channel, so that the sewage in the regulating pool inlet channel 5 flows into the accident pool 1 through the third outlet gate 5.5 for temporary storage.

[0057] Step 3) After the accident is handled, open the first inlet gate.

[0058] Specifically, after the accident is handled, the gate 6.2 of the first inlet of the regulating pool outlet channel is opened, and the sewage in the accident pool 1 can be discharged into the regulating pool outlet channel 6 through the first inlet 6.1 of the regulating pool outlet channel.

[0059] In both of the above situations (normal conditions and accident situations), the sewage enters the outlet channel 6 of the regulating tank and then flows into the outlet pipe 2.9 of the regulating tank.

[0060] In some embodiments, under normal circumstances, the wastewater in the regulating tank outlet pipe 2.9 can flow into the next individual structure for further treatment through the pretreatment tank outlet pipe 2.13.

[0061] In some embodiments, under special circumstances, when bypass treatment is required, the sewage in the regulating tank outlet pipe 2.9 can be pumped into the pretreatment tank bypass pipe 2.8 by the regulating tank lift pump 2.10 and then flow into the bypass single structure for further treatment.

[0062] In the above steps, the sewage flow direction control of the pretreatment tank regulation device provided in the above embodiment is as follows: primary sedimentation tank 4 - regulating tank inlet channel 5 - regulating tank 3 or emergency tank 1 - regulating tank outlet channel 6 - regulating tank outlet pipe 2.9 - pretreatment tank outlet pipe 2.13 or pretreatment tank bypass pipe 2.8.

[0063] In some embodiments, during device operation, the vented wastewater and sludge in the primary sedimentation tank 4 flow into the primary sedimentation tank sludge discharge pipe 4.1, the vented wastewater in the first equalization tank 1 and the second equalization tank 2 enter the first equalization tank vent pipe 3.5 and the first equalization tank vent pipe 3.4 respectively, and the vented wastewater in the emergency tank 1 flows into the emergency tank vent pipe 1.4. The vented wastewater and sludge in the above pipes converge into the main vent pipe 2.7. By controlling the flanged butterfly valve 2.12 on the pipeline, the vented wastewater can be discharged into the nearest sewage well by gravity flow through the main vent pipe 2.7, and the sludge can be pumped into the main sludge discharge pipe 2.6 by the primary sedimentation tank sludge discharge pump 2.5, and finally flow into the sludge thickening tank for dewatering treatment.

[0064] In the above steps, the pretreatment tank control device provided in the above embodiment controls the venting of sewage and the flow direction of sludge during operation: primary sedimentation tank 4, equalization tank 3, emergency tank 1 - venting main pipe 2.7, and sludge discharge main pipe 2.6.

[0065] In summary, compared with existing technologies, the entire device is cleverly and rationally laid out. It adopts an integrated pool design, which can significantly reduce the footprint. The water flow is controlled by a combination of pumps, pipes, valves, etc., which can achieve multiple functions such as pretreatment, water quality and quantity adjustment, emergency water storage, venting, and sludge removal.

[0066] Note that, unless otherwise explicitly stated, all features disclosed in this specification (including any appended claims, abstract, and drawings) may be replaced by alternative features for achieving the same, equivalent, or similar purpose. Therefore, unless explicitly stated otherwise, each disclosed feature is merely one example of a set of equivalent or similar features. Where used, "further," "preferably," "even further," and "more preferably" are simple starting points for describing another embodiment based on the foregoing embodiments, the combination of which with the foregoing embodiments constitutes the complete configuration of another embodiment. Any combination of several "further," "preferably," "even further," or "more preferably" settings following the same embodiment constitutes yet another embodiment.

[0067] In the implementation of functions and steps, the corresponding functions and steps in the various embodiments may occur in a different order than those shown. For example, two consecutive functions and steps may actually be executed or implemented substantially in parallel, and they may sometimes be executed or implemented in reverse order, depending on the functions involved.

[0068] Although this application has been described in detail above with general descriptions and specific embodiments, some modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of this application fall within the scope of protection claimed in this application.

Claims

1. A method for regulating a pretreatment tank, characterized in that, The pretreatment tank control system used in this method includes: a pump station, a primary sedimentation tank, an equalization tank, and an emergency tank. The pump house is located at the bottom of the pretreatment tank control device. The space outside the pump house within the pretreatment tank control device is divided into two layers, one front and one back. The emergency tank is located on the first layer above the pump house, the primary sedimentation tank is located on the second layer above the pump house, and the regulating tank is located on one side of the primary sedimentation tank on the second layer. The regulating tank has a first regulating tank and a second regulating tank, symmetrically arranged. An regulating tank inlet channel and a regulating tank outlet channel are respectively provided above and below the regulating tank. The regulating tank inlet channel communicates with the top of the regulating tank and the top of the primary sedimentation tank, and the regulating tank outlet channel communicates with the bottom of the regulating tank. An emergency tank sump is located near the bottom of the emergency tank close to the pump house. An emergency tank drain pipe is installed in the emergency tank sump and extends outside the emergency tank. The primary sedimentation tank is located near the bottom of the pump house... The primary sedimentation tank is equipped with a sludge discharge pipe extending outside the primary sedimentation tank. A drain pipe penetrating the bottom of the equalization tank is provided. Inspection ports are located at the upper and lower edges of the left end of the emergency tank, adjacent to the inlet and outlet channels of the equalization tank. The inlet channel of the equalization tank connects to the inspection port above the emergency tank, and the outlet channel connects to the inspection port below the emergency tank. A first, second, and third outlet gate are respectively installed at the outlets where the inlet channel connects to the top of the first and second equalization tanks and the inspection port of the emergency tank. Similarly, a first, second, and third inlet gate are respectively installed at the inlet ports where the outlet channel connects to the inspection port of the emergency tank, the bottom of the second equalization tank, and the bottom of the first equalization tank. The pretreatment pool control method includes the following steps: Step 1) Close the third outlet gate and the first inlet gate, and open the first outlet gate, the second outlet gate, the second inlet gate and the third inlet gate; Step 2) In the event of an accident, open the third outlet gate and close the first outlet gate, the second outlet gate, the second inlet gate, the third inlet gate, and the first inlet gate. Step 3) After the accident is handled, open the first water inlet gate.

2. The pretreatment tank control method according to claim 1, characterized in that, The vent pipe of the accident pool, the sludge discharge pipe of the primary sedimentation tank and the vent pipe of the equalization tank are all connected to the main vent pipe, and one end of the main vent pipe extends to the outside of the control device of the pretreatment tank. By controlling the flanged butterfly valve on the pipeline, the vented wastewater is ultimately discharged through the vent manifold in the form of gravity flow.

3. The pretreatment tank control method according to claim 1, characterized in that, Multiple submersible mixers are installed at the upper and lower ends of the regulating tank.

4. The pretreatment tank control method according to claim 1, characterized in that, The bottom of the pool inside the pump house is provided with a pump house sump, and a pump house sump is provided around the bottom of the pool inside the pump house, sloping towards the pump house sump. A pump house drainage submersible pump is provided in the pump house sump, and a pump house drainage pipe is connected to the pump house drainage submersible pump and extends to the outside of the pretreatment pool control device.

5. The pretreatment tank control method according to claim 2, characterized in that, A primary sedimentation tank sludge discharge pump is installed above the pump room. One end of the primary sedimentation tank sludge discharge pump is connected to the venting main pipe, and the other end is connected to the sludge discharge main pipe. The sludge discharge main pipe extends to the outside of the pretreatment tank control device. A regulating tank booster pump is installed below the pump room. One end of the regulating tank booster pump is connected to the pretreatment tank bypass pipe, and the other end is connected to the regulating tank outlet pipe. The left side of the regulating tank outlet pipe is connected to the regulating tank outlet channel, and the right side is connected to the pretreatment tank outlet pipe. One end of the pretreatment tank bypass pipe is connected to the bypass unit treatment structure, and the other end is connected to the pretreatment tank outlet pipe. When bypass treatment is performed, the sewage in the outlet pipe of the regulating tank is pumped into the bypass pipe of the pretreatment tank by the booster pump of the regulating tank.

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