A multifunctional adjusting tank for sewage treatment

Abstract

The utility model discloses a kind of multifunctional adjusting pool for sewage treatment belongs to sewage treatment field, solve the single structure and function of traditional adjusting pool, the problem that sedimentation is prone to, stench is prone to in pool. The utility model includes pool body, multiple aerators and push flow device are equipped in pool body, sludge scraper is equipped at pool bottom in one side of pool body, sludge hopper is equipped at pool bottom below sludge scraper, sludge pump pit is equipped at one end of sludge hopper, and sludge pump is equipped in sludge pump pit. The utility model integrates water quantity regulation, pre-aeration, stirring, sludge discharge and multiple functions, solve the single function of existing adjusting pool, difficult to simultaneously satisfy water quantity regulation, water quality stability, emergency and high concentration sewage pretreatment and multiple needs of problem, realize the efficient treatment of sewage, simultaneously can be as important measure one of sewage treatment plant non-stop transformation, with very strong practicality.

Description

Technical Field

[0001] This utility model belongs to the field of sewage treatment, and specifically relates to a multifunctional regulating tank for sewage treatment. Background Technology

[0002] The equalization tank is an important pretreatment unit in a wastewater treatment plant. Its main functions are to equalize water quality, regulate water volume, and buffer the impact of the instability of incoming water on the subsequent biological treatment system.

[0003] Municipal sewage and industrial wastewater treatment plants often receive complex influent with fluctuating flow rates, and may contain persistent or toxic substances, causing shock loads on the wastewater treatment system and impacting treatment efficiency. Existing equalization tanks have limited functionality and cannot simultaneously meet the diverse needs of flow regulation, water quality stabilization, emergency response, and pretreatment of high-concentration wastewater. Traditional equalization tanks are structurally simple, typically just storage tanks lacking necessary mixing, aeration, and sludge removal facilities. This leads to a series of problems: sedimentation easily occurs within the tank, causing sludge accumulation and reducing effective tank volume; wastewater may undergo anaerobic fermentation, producing odors and causing environmental pollution; and when high concentrations or toxic substances surge in the influent, traditional equalization tanks cannot effectively handle emergency treatment and dilution, directly threatening the stable operation of subsequent treatment processes.

[0004] In addition, when upgrading and transforming a wastewater treatment plant without interrupting production, it is necessary to temporarily introduce wastewater into another treatment facility. Traditional equalization tanks cannot serve as temporary pretreatment units, which increases the difficulty and cost of the transformation.

[0005] Therefore, there is an urgent need for a multi-functional regulating tank to simultaneously meet various needs such as water volume regulation, water quality stabilization, emergency response, and pretreatment of high-concentration wastewater. Utility Model Content

[0006] The purpose of this invention is to provide a multifunctional equalization tank for sewage treatment, in order to solve the problems of traditional equalization tanks having a single structure and function, and being prone to sedimentation and odor generation.

[0007] The technical solution of this utility model is: a multifunctional regulating tank for sewage treatment, including a tank body, multiple aerators and propellers are provided in the tank body, a sludge scraper is provided on the bottom of the tank body on one side, a sludge hopper is provided on the bottom of the tank below the sludge scraper, a sludge pump pit is provided at one end of the sludge hopper, and a sludge discharge pump is provided in the sludge pump pit.

[0008] As a further improvement of this utility model, the output end of the sludge pump is connected to the sand-water separator through a sand discharge pipe, and the liquid phase outlet of the sand-water separator is connected to the pool body through a return water pipe.

[0009] As a further improvement of this utility model, an inlet pipe is provided at the front end of the pool body, and a pump well is provided at the rear end of the pool body. A lift pump is provided in the pump well. The output end of the lift pump is connected to the outlet pipe through a connecting pipe. The outlet pipe is also connected to an internal return pipe. The internal return pipe is connected to the front end of the pool body, and an internal return valve is provided on the internal return pipe.

[0010] As a further improvement of this utility model, the connecting pipe is provided with an internal backflow check valve and an internal backflow flexible joint.

[0011] As a further improvement of this utility model, a flow meter is provided on the internal return pipeline.

[0012] As a further improvement of this utility model, a water outlet valve is provided on the water outlet pipe.

[0013] As a further improvement of this utility model, multiple flow guide walls are provided inside the pool.

[0014] As a further improvement of this utility model, the pool body is equipped with multiple rinsing devices.

[0015] As a further improvement of this utility model, the outlet valve, the internal backflow valve, the internal backflow check valve, and the internal backflow flexible joint are all installed inside the valve well.

[0016] As a further improvement of this utility model, the top of the pool is closed, and multiple vent pipes and equipment hoisting hole covers are provided on the top of the pool. The vent pipes are connected to the deodorization device. Manhole covers are provided on the top of the pool, the top of the valve well, and the top of the pump well.

[0017] The beneficial effects of this utility model are: 1. Highly integrated functions: One tank serves multiple purposes, integrating multiple functions such as water volume regulation, water quality equalization, pre-aeration, emergency response, high-concentration sewage pretreatment, sludge discharge, and deodorization, solving the problem of the single function of traditional equalization tanks.

[0018] 2. Flexible operation and strong shock resistance: By combining different equipment, multiple operating modes can be flexibly switched to effectively cope with fluctuations in water quality and quantity and the impact of accidents, greatly enhancing the stability of the front end of the sewage treatment system.

[0019] 3. Reduced maintenance and easy cleaning: The built-in sludge removal and flushing system effectively prevents sludge accumulation, reduces the frequency of pool cleaning, and lowers maintenance costs and workload.

[0020] 4. Environmentally friendly: The aeration and deodorization devices effectively suppress the generation and emission of odors, improving the factory environment.

[0021] 5. High practicality: This equalization tank can serve as a temporary water treatment unit when a sewage treatment plant undergoes uninterrupted renovation, ensuring the basic operation of the sewage treatment plant during the renovation period. It has extremely high practical value and significance for promotion. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the upper planar layout of this utility model; Figure 2 This is a schematic diagram of the lower layer planar arrangement of this utility model; Figure 3 yes Figure 1 Schematic diagram of AA section in the middle; Figure 4 yes Figure 1 Schematic diagram of the BB cross section in the middle; Figure 5 yes Figure 1 A schematic diagram of the CC cross-section.

[0023] In the diagram: 1-Pool body; 2-Inlet pipe; 3-Outlet pipe; 4-Aerator; 5-Aeration pipeline; 6-Propeller; 8-Internal return pipeline; 9-Internal return check valve; 10-Internal return flexible joint; 11-Internal return valve; 12-Lift pump; 13-Connecting pipe; 16-Outlet valve; 17-Flow meter; 18-Sludge scraper; 19-Sludge hopper; 20-Sludge discharge pump; 21-Flushing device; 22-Sand separator; 23-Ventilation pipe; 24-Manhole cover; 25-Equipment hoisting hole cover; 27-Sand separator drainage ditch; 28-Sludge external return pipe; 29-Guide wall; 30-Aeration valve; 31-Sludge pump pit; 33-Sand discharge pipe; 34-Return water pipe; 35-Outlet weir; 36-Vacuum gate; 37-Valve well; 38-Pump well. Detailed Implementation

[0024] The present invention will now be described in detail with reference to the accompanying drawings.

[0025] Example 1 like Figure 1-5 As shown, a multifunctional equalization tank for wastewater treatment includes a tank body 1. Multiple aerators 2 and propellers 6 are installed inside the tank body 1. The aerators 2 are connected to a blower outside the tank via aeration pipes 5, forming an aeration system. Aeration valves 30 are installed on the aeration pipes 5. A sludge scraper 18 is installed on one side of the tank bottom. The sludge scraper 18 is a chain-type or traveling-type sludge scraper. A sludge hopper 19 is located below the sludge scraper 18 on the tank bottom. A sludge pump pit 31 is located at one end of the sludge hopper 19, and a sludge discharge pump 20 is installed inside the sludge pump pit 31. The bottom of the tank body 1 is designed with a slope towards the sludge hopper 19, and the bottom of the sludge hopper 19 is also sloped towards the sludge pump pit 31.

[0026] The output end of the sludge pump 20 is connected to the sand-water separator 22 via the sand discharge pipe 33. The liquid phase outlet of the sand-water separator 22 is connected to the tank body 1 via the return water pipe 34. The drainage ditch 27 of the sand-water separator is connected to the sewage inspection well in the plant area.

[0027] A water inlet pipe 2 is provided at the front end of the pool body 1, and a pump well 38 is provided at the rear end of the pool body 1. A water outlet weir 35 is provided between the water outlet channel 38 and the pool body 1. An vent gate 36 is provided at the bottom of the pool wall between the water outlet channel 38 and the pool body 1. Multiple lift pumps 12 connected in parallel are provided in the pump well 38. The output end of the lift pump 12 is connected to the water outlet pipe 3 through a connecting pipe 13. The water outlet pipe 3 is also connected to an internal return pipe 8, which is connected to the front end of the pool body 1. An internal return valve 11 is provided on the internal return pipe 8. In this embodiment, four lift pumps 12 are provided, two for use and two for standby.

[0028] A sludge external return pipe 28 is provided at the front end of the tank body 1, and the sludge external return pipe 28 is connected to the sludge return system of the secondary sedimentation tank.

[0029] The connecting pipe 13 is equipped with an internal backflow check valve 9 and an internal backflow flexible joint 10.

[0030] A flow meter 17 is installed on the internal return pipe 8.

[0031] A water outlet valve 16 is installed on the water outlet pipe 3.

[0032] The pool body 1 is equipped with multiple flow guide walls 29.

[0033] The pool body 1 is equipped with multiple rinsing devices 21.

[0034] Water valve 16, internal return valve 11, internal return check valve 9 and internal return flexible joint 10 are all installed in valve well 37.

[0035] The top of the pool body 1 is closed, and multiple vent pipes 23 and equipment hoisting hole covers 25 are provided on the top of the pool body 1. The vent pipes 23 are connected to the deodorization device (such as a soil deodorization filter, biological deodorization tower or chemical scrubbing tower); manhole covers 24 are provided on the top of the pool body 1, the top of the valve well 37 and the top of the pump well 38 respectively.

[0036] The sludge scraper 18 scrapes the settled sludge into the sludge hopper 19 at the bottom of the tank. The sludge is then transported to the sand separator 22 via the sludge discharge pump 20 and the sand discharge pipe 33. The sand discharge port of the sand separator 22 discharges the separated sand particles, and the liquid phase outlet returns the supernatant to the tank via the return water pipe 34.

[0037] The flushing system 21 can be connected to the internal return pipe 8 to flush the pool body 1 with the sewage in the pool.

[0038] The work process is as follows: Wastewater enters tank 1 through inlet pipe 2. Under normal circumstances, the flow booster 6 can be turned on for homogenization. After a period of time, the wastewater is discharged through outlet pipe 3 via lift pump 12 and sent to the secondary sedimentation tank for sludge-water separation. When the influent concentration is detected to be abnormally high, the effluent can be switched through internal return valve 11 to transport it to the front end of tank 1 for dilution of the raw water. Bacterial inoculants are added to tank 1, and aerator 4 is started to degrade organic matter in high-concentration or toxic wastewater. At the same time, the sludge return system of the secondary sedimentation tank is started, and sludge is returned through external sludge return pipe 28 to maintain the sludge concentration in tank 1. When the tank has accumulated a lot of sludge and needs to be cleaned, the influent is stopped first, and after a period of settling, the sludge scraper 18 and sludge discharge pump 20 are started to discharge the sludge to sand-water separator 22 for treatment. After the sludge discharge is completed, the flushing device 21 can be turned on to flush tank 1 with wastewater from inside the tank or external clean water to keep it clean. The odor generated in pool 1 can be collected and treated by a deodorization device.

[0039] This invention can operate in the following modes: Water quantity and quality adjustment mode: Wastewater enters tank 1 through inlet pipe 2 for homogenization and quantity; Pre-aeration homogenization mode: Aerator 4 is started to pre-aerate the sewage in tank 1 to prevent suspended solids from settling, homogenize the water quality, and preliminarily degrade organic matter in the water to prevent the generation of anaerobic odor.

[0040] Emergency response mode: When the quality or quantity of influent water fluctuates drastically, the retention time of sewage in the tank is extended, and aerator 4 and return valve 11 are turned on for enhanced treatment to protect subsequent processes. High-concentration wastewater pretreatment mode: Open the return valve 11 to return the wastewater in the tank to the front end of the tank body 1 through the internal return pump 7 and the internal return pipeline 8, mix it with the original high-concentration wastewater for dilution and adjustment, add bacteria to the tank, and start the aerator 4 for enhanced treatment. Sludge removal and cleaning mode: The sludge scraper 18 and sludge pump 20 are started periodically to remove the sludge deposited at the bottom of the pool, and the flushing device 21 is started periodically to flush the pool walls and bottom.

[0041] This utility model integrates multiple functions such as water volume regulation, pre-aeration, stirring, sludge removal, flushing, and deodorization. It solves the problem that existing equalization tanks have only one function and cannot simultaneously meet multiple needs such as water volume regulation, water quality stability, emergency response, and pretreatment of high-concentration sewage. It achieves efficient sewage treatment and can also serve as an important measure for sewage treatment plant renovation without interrupting production, making it highly practical.

Claims

1. A multifunctional conditioning tank for sewage treatment, comprising a tank body (1), characterized in that: Multiple aerators (4) and flow promoters (6) are provided in the pool body (1). A sludge scraper (18) is provided on the bottom of the pool body (1) on one side. A sludge hopper (19) is provided on the bottom of the pool below the sludge scraper (18). A sludge pump pit (31) is provided at one end of the sludge hopper (19). A sludge pump (20) is provided in the sludge pump pit (31).

2. The multifunctional equalization tank for sewage treatment according to claim 1, characterized in that: The output end of the sludge pump (20) is connected to the sand-water separator (22) through the sand discharge pipe (33), and the liquid phase outlet of the sand-water separator (22) is connected to the pool body (1) through the return water pipe (34).

3. A multifunctional equalization tank for wastewater treatment according to any one of claims 1-2, characterized in that: A water inlet pipe (2) is provided at the front end of the pool body (1), and a pump well (38) is provided at the rear end of the pool body (1). A lift pump (12) is provided in the pump well (38). The output end of the lift pump (12) is connected to the water outlet pipe (3) through a connecting pipe (13). The water outlet pipe (3) is also connected to an internal return pipe (8). The internal return pipe (8) is connected to the front end of the pool body (1), and an internal return valve (11) is provided on the internal return pipe (8).

4. A multifunctional equalization tank for sewage treatment according to claim 3, characterized in that: The connecting pipe (13) is equipped with an internal backflow check valve (9) and an internal backflow flexible joint (10).

5. A multifunctional equalization tank for sewage treatment according to claim 4, characterized in that: A flow meter (17) is installed on the internal return pipe (8).

6. A multifunctional equalization tank for sewage treatment according to claim 5, characterized in that: A water outlet valve (16) is provided on the water outlet pipe (3).

7. A multifunctional equalization tank for sewage treatment according to claim 6, characterized in that: The pool body (1) is equipped with multiple flow guide walls (29).

8. A multifunctional equalization tank for sewage treatment according to claim 7, characterized in that: The pool body (1) is equipped with multiple rinsing devices (21).

9. A multifunctional equalization tank for sewage treatment according to claim 8, characterized in that: The water valve (16), internal return valve (11), internal return check valve (9) and internal return flexible joint (10) are all located in the valve well (37).

10. A multifunctional equalization tank for sewage treatment according to claim 9, characterized in that: The top of the pool body (1) is closed, and multiple ventilation pipes (23) and equipment hoisting hole covers (25) are provided on the top of the pool body (1). The ventilation pipes (23) are connected to the deodorization device. Manhole covers (24) are provided on the top of the pool body (1), the top of the valve well (37) and the top of the pump well (38).

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