Distribution type sampling device of secondary sedimentation tank

Abstract

The utility model relates to a secondary sedimentation tank distribution type sampling device which comprises a plurality of sampling pumps arranged on the periphery of a secondary sedimentation tank, and the sampling pumps are used for collecting supernate; a water outlet of the sampling pump is connected with sampling branch pipes, each sampling branch pipe is connected with a sampling main pipe, and the sampling main pipe is connected with a sampling port. The secondary sedimentation tank distribution type sampling device disclosed by the utility model is used for replacing the traditional manual sampling, so that the labor intensity of workers and the danger in the sampling process are reduced; the sampling efficiency and the water quality detection accuracy can be improved.

Description

Technical Field

[0001] This utility model relates to the field of secondary sedimentation tank sampling technology, specifically to a secondary sedimentation tank distribution sampling device. Background Technology

[0002] Primary sedimentation tanks are generally located after grit chambers and before aeration tanks in wastewater treatment plants, while secondary sedimentation tanks are located after aeration tanks and before advanced treatment or discharge. After biological treatment, wastewater must enter the secondary sedimentation tank for sludge-water separation. Only clarified, compliant treated water can be discharged. Simultaneously, a certain concentration of return sludge or a certain amount of treated water must be provided to the biological treatment facilities. Regular sampling and testing are necessary to assess sludge settling performance, effluent quality, and process operational stability. Taking effluent quality sampling as an example, due to the large surface area of ​​the secondary sedimentation tank, multiple sampling points must be taken manually to avoid sampling errors, followed by mixing. This method involves frequent operations, high labor intensity, and certain risks; it also carries a degree of randomness, leading to errors. Utility Model Content

[0003] The purpose of this invention is to provide a secondary sedimentation tank distribution sampling device to solve the problems associated with manual sampling.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A secondary sedimentation tank distribution sampling device includes several sampling pumps arranged around the periphery of the secondary sedimentation tank. The sampling pumps are used to collect the supernatant. The drain outlet of the sampling pump is connected to a sampling branch pipe. Each sampling branch pipe is connected to a sampling main pipe, and the sampling main pipe is connected to a sampling port.

[0006] Furthermore, the sampling manifold is a ring-shaped pipe located on the periphery of the secondary sedimentation tank.

[0007] Furthermore, the sampling branch pipe is a U-shaped pipe, and the highest point of the sampling branch pipe is higher than that of the sampling main pipe.

[0008] Furthermore, each of the sampling branches is connected to a solenoid valve.

[0009] Furthermore, the sampling port is located on the periphery of the secondary sedimentation tank and is formed by a pipe extending downward from the sampling manifold.

[0010] Furthermore, four sampling pumps are provided, evenly spaced along the circumference of the secondary sedimentation tank.

[0011] Furthermore, the sampling pump is located in the annular outlet area.

[0012] The beneficial effects of this utility model are:

[0013] This utility model's secondary sedimentation tank distribution sampling device uses a PLC control system to control the start and stop of the sampling pumps and the opening and closing of the solenoid valves. It can sample from any area where several sampling pumps are located, and then mix the samples in the main sampling pipe. This can replace manual sampling, reducing the labor intensity of workers, lowering the risk to personnel during the sampling process, and improving sampling efficiency and the accuracy of water quality testing. Attached Figure Description

[0014] Figure 1 This is a top view of the secondary sedimentation tank distribution sampling device of this utility model;

[0015] Figure 2 This is the front view of the secondary sedimentation tank distribution sampling device of this utility model.

[0016] 1. Secondary sedimentation tank; 2. Effluent area; 3. Effluent outlet; 4. Sampling pump; 5. Solenoid valve; 6. Sampling branch pipe; 7. Sampling main pipe; 8. Sampling port. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art are within the protection scope of the present utility model.

[0018] Embodiments of this utility model:

[0019] like Figures 1-2 As shown, a secondary sedimentation tank distribution sampling device includes several sampling pumps 4 disposed around the outer periphery of the secondary sedimentation tank 1. The sampling pumps 4 are used to collect the supernatant. The term "outer periphery" is not the same as "outer periphery" in this specification, but simply indicates that it is located in a circumferential direction. The sampling pumps 4 are located in the annular outlet zone 2, which is situated outside the overflow weir in an annular outlet trough. The water overflowing from the overflow weir is ultimately discharged through the outlet 3 at the bottom. This invention aims to automatically sample the water in the outlet zone 2, replacing manual sampling.

[0020] In this embodiment, four sampling pumps 4 are provided, evenly spaced along the circumference of the secondary sedimentation tank 1. In other embodiments, three or five pumps, or other quantities, may be provided as needed, depending on factors such as the size of the secondary sedimentation tank 1. The sampling pumps 4 are existing pumps, and their inlets can directly contact the water; starting the pumps enables sampling. The sampling pumps 4 can be fixed at the bottom of the annular outlet area 2 or on the annular wall of the secondary sedimentation tank 1.

[0021] The drain outlet of sampling pump 4 is connected to sampling branch pipes 6, and each sampling branch pipe 6 is connected to a sampling main pipe 7. The sampling main pipe 7 is a ring-shaped pipe located on the periphery of the secondary sedimentation tank 1. The sampling branch pipes 6 are U-shaped pipes, through which water samples collected by sampling pump 4 flow into the sampling main pipe 7. The highest point of the sampling branch pipes 6 is higher than that of the sampling main pipe 7 to facilitate the collection of water samples.

[0022] Each sampling branch pipe 6 is connected to a solenoid valve 5, which is used to control the opening and closing of the sampling branch pipe 6. The solenoid valve 5 corresponds one-to-one with the sampling pump 4 and can be opened when the corresponding sampling pump 4 is started.

[0023] The sampling manifold 7 is connected to a sampling port 8, which is located on the periphery of the secondary sedimentation tank 1 and is formed by a vertical pipe extending downward from the sampling manifold 7. The sampling port 8 can be used with a corresponding water sample collector or directly with a water quality analyzer to achieve rapid water quality testing.

[0024] The secondary sedimentation tank 1 distribution sampling device of this invention uses a PLC control system to control the start and stop of the sampling pump 4 and the opening and closing of the solenoid valve 5. It can simultaneously sample from four locations and then mix them in the sampling manifold 7; or it can sample from any location. This secondary sedimentation tank 1 distribution sampling device replaces manual sampling, reducing the labor intensity of workers, reducing the risk to personnel during the sampling process, and improving sampling efficiency and detection accuracy.

Claims

1. A secondary sedimentation tank distribution sampling device, characterized by: The sampling pump is arranged on the periphery of the secondary sedimentation tank and used for collecting supernatant.

2. The secondary sedimentation basin distribution sampling device of claim 1, wherein: The sampling main pipe is an annular pipe and located on the periphery of the secondary sedimentation tank.

3. The secondary sedimentation basin distribution sampling apparatus of claim 2, wherein: The highest point of the sampling branch pipe is higher than the sampling main pipe.

4. The secondary sedimentation basin dispensing sampling device of claim 1, wherein: The sampling branch pipe is connected with an electromagnetic valve.

5. The secondary sedimentation basin dispensing sampling device of claim 1, wherein: The sampling port is located on the periphery of the secondary sedimentation tank and formed by a pipe connected with the sampling main pipe and extending downward.

6. The secondary sedimentation basin dispensing sampling device of claim 1, wherein: The four sampling pumps are evenly distributed along the periphery of the secondary sedimentation tank.

7. The secondary sedimentation basin dispensing sampling device of claim 1, wherein: The sampling pump is located in the annular water outlet area.

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