Composite colloid particle purification device

Abstract

The utility model discloses a composite colloid particle purification device and relates to the technical field of sewage treatment. A water inlet and a backwashing water outlet are formed in the lower part of the tank body, the tank body is filled with a filter material, the tank body is provided with a fixed screen plate above the filter material, the fixed screen plate is fixedly connected with the tank body, the fixed screen plate covers the sectional area of an inner hole of the whole tank body, the tank body is provided with a floating screen plate below the filter material, and the floating screen plate can move up and down in the tank body. The floating screen plate covers the sectional area of the inner hole of the whole tank body, and the tank body is provided with a supporting plate below the floating screen plate. The utility model has the beneficial effects that during normal filtration, the floating screen plate ascends and compresses a filter material for filtration under the own specific gravity and the pressure of inlet water flow, during backwashing, backwashing water flows downwards from the upper part, the water flow impacts the floating screen plate, the floating screen plate descends, the backwashing water performs backwashing on the loose filter material, and the backwashing effect is good. Due to the design of the floating screen plate, the filter is simple in structure, and the use amount of backwashing water is reduced through air-water mixed backwashing.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment, in particular to a purification device for composite colloidal particles. Background Technique

[0002] In sewage treatment, flocculants are often added to sewage. When a high-molecular flocculant is added to water, at the beginning, the functional group of a certain chain segment adsorbs on a certain colloidal particle, while another chain segment extends into the water and adsorbs on another colloidal particle, thus forming a flocculate of a "colloidal particle - high-molecular flocculant - colloidal particle" composite colloidal particle. That is, the high-molecular flocculant plays an adsorption bridging role between two particles. The composite colloidal particles need to be separated from the sewage through a filter. Quartz sand filters, walnut shell filters and fine filters are used respectively according to the treatment precision. Among them, when the traditional walnut shell filter filters, the filter layer needs to be compacted, and when backwashing, the filter layer needs to be relaxed, and the walnut shells are cleaned with a large amount of backwashing water. The amount of backwashing water is large, and the filter structure is complex. Content of the Utility Model

[0003] In order to solve the problems of large backwashing water volume and complex filter structure existing in the existing purification device for composite colloidal particles, the utility model provides a purification device for composite colloidal particles.

[0004] The technical solution provided by the utility model is: a purification device for composite colloidal particles, including a tank body. The tank body is a closed container with heads at both the upper and lower ends. An anti-washing water inlet and a water outlet are provided at the upper part of the tank body, and a water inlet and an anti-washing water outlet are provided at the lower part of the tank body. The inside of the tank body is filled with filter media. A fixed mesh plate is provided above the filter media in the tank body. The fixed mesh plate is fixedly connected to the tank body and covers the cross-sectional area of the entire inner hole of the tank body. A floating mesh plate is provided below the filter media in the tank body. The floating mesh plate can move up and down in the tank body and covers the cross-sectional area of the entire inner hole of the tank body. A support plate is provided below the floating mesh plate in the tank body;

[0005] The specific gravity of the floating mesh plate is less than that of water.

[0006] A gas distribution plate is provided below the floating mesh plate in the tank body. The gas distribution plate is composed of an air inlet main pipe and air inlet branch pipes. The air inlet main pipe and the air inlet branch pipes form a "rich" - shaped structure. Uniform air outlet holes are opened on the air inlet branch pipes. The air inlet main pipe is connected to a compressed air inlet. The compressed air inlet is provided on the tank body. The compressed air inlet is connected to an air compressor through an air inlet pipeline. A one-way valve and a solenoid valve are installed on the air inlet pipeline. An air accumulator is bypassed between the solenoid valve and the air compressor on the air inlet pipeline. The solenoid valve is powered by a high-frequency pulse power supply;

[0007] An exhaust pipe is provided at the top of the tank body. The exhaust pipe is horizontally connected to a U-shaped pipe, and water is filled in the U-shaped pipe.

[0008] The utility model discloses beneficial effect is: in normal filtration, the floating screen plate is under the pressure of the specific gravity and the water flow of inlet water and rises and presses the filter material to filter, when backwashing, backwashing water flows from the upper portion to the downward, and the water flow hits the floating screen plate, and the floating screen plate drops, and backwashing water backwashes the loose filter material, and the design of the floating screen plate makes the structure of the filter simple, and the water consumption of backwashing is reduced through the air-water mixed backwashing. BRIEF DESCRIPTION OF DRAWINGS

[0009] ATTACHED Figure 1 It is the structure schematic diagram of the utility model;

[0010] ATTACHED Figure 2 It is the sectional view of attached Figure 1 ;

[0011] ATTACHED Figure 3 It is the structure schematic diagram of the air distribution disc in the utility model.

[0012] In the drawing, 1 is the water inlet, 2 is the water outlet, 3 is the backwashing water inlet, 4 is the backwashing water outlet, 5 is the air compressor, 6 is the compressed air inlet, 7 is the floating screen plate, 8 is the fixed screen plate, 9 is the exhaust pipe, 10 is the tank body, 11 is the air distribution disc, 111 is the air inlet main pipe, 112 is the air inlet branch pipe, 12 is the U-shaped pipe, 13 is the liquid level, 14 is the filter material, 15 is the support plate, 16 is the electromagnetic valve, 17 is the air inlet pipeline, 18 is the air accumulator, and 19 is the check valve. DETAILED DESCRIPTION

[0013] As Figures 1 to 3 Shown, composite colloidal particle purification device, including tank body 10, tank body 10 is a top and bottom with head's airtight container, tank body 10 upper portion is equipped with backwashing water inlet 3 and water outlet 2, tank body 10 lower portion is equipped with water inlet 1 and backwashing water outlet 4, tank body 10 inside is filled with filter material 14, tank body 10 is equipped with fixed screen plate 8 on filter material 14 upper portion, and fixed screen plate 8 is fixedly connected with tank body 10, and fixed screen plate 8 covers the cross-sectional area of entire tank body 10 inner hole, and tank body 10 is equipped with floating screen plate 7 on filter material 14 lower portion, and floating screen plate 7 can move up and down in tank body 10, and floating screen plate 7 covers the cross-sectional area of entire tank body 10 inner hole, and tank body 10 is equipped with support plate 15 on floating screen plate 7 lower portion.

[0014] The specific gravity of the floating screen plate 7 is less than the specific gravity of water.

[0015] In normal filtration, the floating screen plate 7 rises and presses the filter material 14 under the pressure of the specific gravity and the water flow of inlet water and filters, when backwashing, backwashing water flows from the upper portion to the downward, and the water flow hits the floating screen plate 7, and the floating screen plate 7 drops, and backwashing water backwashes the loose filter material 14, and the design of the floating screen plate 7 makes the structure of the filter simple.

[0016] The tank 10 is provided with a gas distribution plate 11 below the floating net plate 7, the gas distribution plate 11 is composed of a gas inlet main pipe 111 and a gas inlet branch pipe 112, the gas inlet main pipe 111 and the gas inlet branch pipe 112 form a "abundant" character structure, the gas inlet branch pipe 112 is provided with uniformly distributed gas outlet holes, the gas inlet main pipe 111 is connected with the compressed air inlet 6, the compressed air inlet 6 is arranged on the tank 10, the compressed air inlet 6 is connected with the air compressor 5 through a gas inlet pipeline 17, the gas inlet pipeline 17 is provided with a one-way valve 19 and an electromagnetic valve 16, the gas inlet pipeline 17 is connected with an air accumulator 18 between the electromagnetic valve 16 and the air compressor 5, the electromagnetic valve 16 is powered by a high-frequency pulse power supply.

[0017] The tank 10 is provided with an exhaust pipe 9 at the top, the exhaust pipe 9 is transversely connected with a U-shaped pipe 12, the U-shaped pipe 12 is filled with water, during the filtration and backwashing, the tank 10 has a certain pressure, the pressure causes the liquid level 13 in the U-shaped pipe 12 to be not the same height on the left and right sides, that is, the liquid in the tank 10 will not be discharged from the exhaust pipe 9.

[0018] The air compressor 5 is started when the equipment is backwashed, the compressed air flows from the lower part to the upper part to perform air-water combined backwashing on the filter material, since the electromagnetic valve 16 is powered by a high-frequency pulse power supply, the compressed air has pulse pressure to perform backwashing on the filter material, the backwashing effect is improved, the water consumption for backwashing is saved, during the closing of the electromagnetic valve 16, the compressed air enters the air accumulator 18, and the air compressor 5 does not need to be stopped.

Claims

1. A complex coacervate particle purification apparatus comprising a tank (10), characterised in that: The tank body (10) is a sealed container with heads at both the top and the bottom. The upper part of the tank body (10) is provided with a backwashing water inlet (3) and a water outlet (2), and the lower part of the tank body (10) is provided with a water inlet (1) and a backwashing water outlet (4). The interior of the tank body (10) is filled with filter media (14). The tank body (10) is provided with a fixed mesh plate (8) above the filter media (14). The fixed mesh plate (8) is fixedly connected to the tank body (10) and covers the cross-sectional area of the inner hole of the entire tank body (10). The tank body (10) is provided with a floating mesh plate (7) below the filter media (14). The floating mesh plate (7) can move up and down within the tank body (10) and covers the cross-sectional area of the inner hole of the entire tank body (10). The tank body (10) is provided with a support plate (15) below the floating mesh plate (7). The specific gravity of the floating mesh plate (7) is less than that of water.

2. The composite colloidal particle purification device of claim 1, wherein: The tank body (10) is provided with a gas distribution plate (11) below the floating mesh plate (7). The gas distribution plate (11) consists of an air inlet main pipe (111) and air inlet branch pipes (112). The air inlet main pipe (111) and the air inlet branch pipes (112) form a "丰" - shaped structure. The air inlet branch pipes (112) are provided with evenly distributed air outlet holes. The air inlet main pipe (111) is connected to a compressed air inlet (6). The compressed air inlet (6) is provided on the tank body (10). The compressed air inlet (6) is connected to an air compressor (5) through an air inlet pipeline (17). A check valve (19) and a solenoid valve (16) are installed on the air inlet pipeline (17). An air accumulator (18) is connected in parallel between the solenoid valve (16) and the air compressor (5) on the air inlet pipeline (17). The solenoid valve (16) is powered by a high-frequency pulse power supply. The top of the tank body (10) is provided with an exhaust pipe (9). The exhaust pipe (横向连接一个U形管(12)) is horizontally connected to a U-shaped pipe (12), and the U-shaped pipe (12) is filled with water. It should be noted that there is an unclear description "横向连接一个U形管(12)" in the original text. I translated it as "is horizontally connected to a U-shaped pipe (12)" as much as possible according to the context, but it may need to be adjusted according to the accurate meaning.

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