A pickling device for a biological pond aeration system

Abstract

This utility model relates to the field of wastewater treatment technology, specifically to an acid washing device for a biological tank aeration system, comprising a container. The bottom of the container is connected to a first pipe, on which a metering pump is installed. The first pipe is connected to a second pipe at the rear end of the metering pump, and a pressure relief valve is installed on the second pipe. The ends of the first pipe are connected to a third pipe and a fourth pipe respectively. A pulsation damper is installed at the end of the third pipe, and a back pressure valve is installed on the fourth pipe. The fourth pipe is connected to multiple sixth pipes, each corresponding to an aeration branch pipe, and a check valve is installed on each sixth pipe. This utility model can stably and safely deliver the washing medium to each aeration branch pipe, is convenient and quick, can be operated by a single person, reduces labor intensity, and saves labor costs.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, specifically to an acid washing device for a biological tank aeration system. Background Technology

[0002] Aeration devices are an important component of activated sludge wastewater treatment systems. They aerate the water to meet the oxygen requirements of aerobic microorganisms and ensure thorough mixing of activated sludge and wastewater. The air ducts and aerators in the biological treatment tanks of wastewater treatment plants require regular cleaning to remove contaminants, improve aeration efficiency, and extend the equipment's lifespan.

[0003] The existing method for cleaning aeration pipes and aerators involves using a mobile acid-washing trolley with an acid-resistant pump on it and a bucket underneath for diluting formic acid. The pump and hoses are connected to the aeration pipes to perform acid washing. This method requires connecting the acid washing ports on the aeration pipes one by one, and each time the diluted formic acid is used to wash a maximum of three ports. Diluting the formic acid and transferring water back and forth takes a lot of time and is dangerous. When encountering cable boxes in the biological tank, multiple people need to carry the trolley over, which consumes a lot of manpower. Using this method to acid wash an aeration device in a biological tank takes a lot of time and has low cleaning efficiency.

[0004] Therefore, this utility model proposes an acid washing device for a biological tank aeration system, which avoids the cleaning method of using an acid hand trolley. It uses pipes to connect each aeration pipe and uniformly transport the washing medium, which can greatly reduce labor intensity, is convenient and fast, and the device is stable and safe to operate, making it easy to use in actual production. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of the existing technology by providing an acid washing device for a biological tank aeration system, thereby improving the flushing efficiency of the biological tank aeration system.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: an acid washing device for a biological tank aeration system, comprising a container, a first pipe provided at the bottom of the container, a metering pump provided on the first pipe, the first pipe connected to a second pipe at the rear end of the metering pump, a pressure relief valve provided on the second pipe, the other end of the second pipe connected to the top of the container; the end of the first pipe connected to a fourth pipe, the fourth pipe connected to multiple sixth pipes, the sixth pipes connected to aeration branch pipes one by one, and a check valve provided on the sixth pipe.

[0007] Furthermore, a filter is installed on the first pipe at the front end of the metering pump, and a first control valve is installed at the front end of the filter.

[0008] Furthermore, the end of the first pipe is connected to the third pipe, and a pulsation damper is connected to the end of the third pipe. A second control valve is provided at the front end of the pulsation damper; a back pressure valve is provided on the fourth pipe.

[0009] Furthermore, a pressure indicator is installed on the fourth pipe at the front end of the back pressure valve, and a third control valve is installed at the rear end of the back pressure valve.

[0010] Furthermore, the fourth pipe is bent upwards, and the lower part of the highest section of the fourth pipe is connected to the fifth pipe, on which a fourth control valve is installed.

[0011] Furthermore, the fifth pipeline is located between the back pressure valve and the third control valve.

[0012] Furthermore, each of the sixth pipelines is equipped with a fifth control valve, which is located upstream of the check valve.

[0013] The beneficial effects of this utility model are:

[0014] This utility model of acid washing device does not require stopping and emptying the aerobic tank or disassembling the aerator when cleaning aerators and air pipelines. It is simple to operate and does not affect the normal operation of the sewage treatment system. When in use, simply open the control valves and metering pumps. It is convenient and quick, can be operated by a single person, reduces labor intensity and saves labor costs. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0016] The names corresponding to each mark in the diagram:

[0017] 1. Container; 2. First pipeline; 21. Metering pump; 22. Filter; 23. First control valve; 3. Second pipeline; 31. Pressure relief valve; 4. Third pipeline; 41. Pulse damper; 42. Second control valve; 5. Fourth pipeline; 51. Pressure indicator; 52. Back pressure valve; 53. Third control valve; 6. Fifth pipeline; 61. Fourth control valve; 7. Sixth pipeline; 71. Fifth control valve; 72. Check valve. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model are within the protection scope of the present utility model.

[0019] Embodiments of this utility model:

[0020] like Figure 1 As shown, the present invention includes a container 1, the bottom of which is connected to a first pipe 2. A metering pump 21 is installed on the first pipe 2, a filter 22 is installed at the front end of the metering pump 21, and a first control valve 23 is installed at the front end of the filter 22. In this embodiment, the container 1 is an acid storage tank that stores formic acid solution, the metering pump 21 is a metering diaphragm pump, and the filter 22 is a Y-type filter 22.

[0021] A second pipe 3 is provided on the first pipe 2. The second pipe 3 is located at the rear end of the metering pump 21 and is connected to the top of the container 1. A pressure relief valve 31 is provided on the second pipe 3. The end of the first pipe 2 is also connected to a third pipe 4 and a fourth pipe 5 respectively. A pulsation damper 41 is provided on the third pipe 4, and a second control valve 42 is provided at the front end of the pulsation damper 41. A back pressure valve 52 is provided on the third pipe 4. A pressure indicator 51 is provided at the front end of the back pressure valve 52, and a third control valve 53 is provided at the rear end of the back pressure valve 52. In this embodiment, the pressure indicator 51 is a PP diaphragm acid and alkali resistant pressure gauge, the back pressure valve 52 is set to a pressure of 0.4 MPa, and the pressure relief valve 31 is set to a pressure of 0.6 MPa.

[0022] The fourth pipe 5 is bent upwards, and a fifth pipe 6 is set downwards at the highest section of the fourth pipe 5. The fifth pipe 6 is located between the back pressure valve 52 and the third control valve 53, and a fourth control valve 61 is set on the fifth pipe 6. The fourth pipe 5 is connected to each aeration branch pipe on the biological tank through multiple sixth pipes 7, and a fifth control valve 71 is set on each sixth pipe 7. A check valve 72 is set at the rear end of the fifth control valve 71. In this embodiment, the first control valve 23, the second control valve 42, the third control valve 53, the fourth control valve 61, and the fifth control valve 71 are all ball valves.

[0023] The principle of this utility model is as follows:

[0024] After the equipment of this utility model is installed in place, a water test should be carried out to clean the pipeline and test the water tightness pressure. After the device is running safely and stably, the flushing medium is prepared in container 1 (the acid stock solution and water are pumped in separately by a transfer pump according to a certain metering ratio, such as 90% formic acid stock solution and water at a volume ratio of 1:3). The flow pipe can be opened to flush the aeration system. During the process, there should be no interruption of the working medium flow or leakage of the medium.

[0025] During the rinsing process, the cleaning of different aeration branch pipes can be achieved by controlling each fifth control valve 71. After the rinsing is completed, the pipeline should be rinsed with clean water to replace the rinsing medium and ensure that the pipeline is clean and unobstructed. During the process, the water in the secondary sedimentation tank of the biological tank can be reused and transported to container 1 for rinsing.

[0026] In this invention, filter 22 is used to filter impurities in the rinsing medium, preventing wear of the metering pump 21 or blockage of the pipeline; the second pipeline 3 can form a loop in the event of a blockage, allowing the liquid to return to container 1, eliminating the risk of pipeline rupture due to excessive pressure; the pulsation damper 41, pressure indicator 51, and back pressure valve 52 can stabilize the flow rate, reduce fluctuations, and achieve stable and continuous delivery of the rinsing medium; the fifth pipeline 6 can be used for sampling and venting gas from the pipeline; the check valve 72 can prevent air from the aeration branch pipe from entering the pickling device of this invention.

Claims

1. An acid washing device for a biological tank aeration system, characterized in that: The container (1) includes a first pipe (2) at the bottom of the container (1), a metering pump (21) is installed on the first pipe (2), the first pipe (2) is connected to a second pipe (3) at the rear end of the metering pump (21), a pressure relief valve (31) is installed on the second pipe (3), and the other end of the second pipe (3) is connected to the top of the container (1); the end of the first pipe (2) is connected to a fourth pipe (5), the fourth pipe (5) is connected to multiple sixth pipes (7), the sixth pipes (7) are connected to aeration branch pipes one by one, and a check valve (72) is installed on the sixth pipe (7).

2. The acid washing device for a biological tank aeration system according to claim 1, characterized in that: A filter (22) is provided on the first pipe (2) at the front end of the metering pump (21), and a first control valve (23) is provided at the front end of the filter (22).

3. The acid washing device for a biological tank aeration system according to claim 1, characterized in that: The end of the first pipe (2) is also connected to the third pipe (4), and a pulsation damper (41) is connected to the end of the third pipe (4). A second control valve (42) is provided at the front end of the pulsation damper (41); a back pressure valve (52) is provided on the fourth pipe (5).

4. The acid washing device for a biological tank aeration system according to claim 3, characterized in that: A pressure indicator (51) is installed on the fourth pipe (5) at the front end of the back pressure valve (52), and a third control valve (53) is installed at the rear end of the back pressure valve (52).

5. The acid washing device for a biological tank aeration system according to claim 4, characterized in that: The fourth pipe (5) is bent upwards, and the lower part of the highest section of the fourth pipe (5) is connected to the fifth pipe (6). A fourth control valve (61) is provided on the fifth pipe (6).

6. The acid washing device for a biological tank aeration system according to claim 5, characterized in that: The fifth pipe (6) is located between the back pressure valve (52) and the third control valve (53).

7. The acid washing device for a biological tank aeration system according to claim 1, characterized in that: Each of the sixth pipes (7) is equipped with a fifth control valve (71), which is located at the front end of the check valve (72).

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