Anaerobic jar for sewage treatment

Abstract

The utility model discloses an anaerobic jar for sewage treatment, which comprises a jar body, and the top of the jar body is respectively communicated with a water inlet pipe and a water outlet pipe; a primary sludge bed, a secondary sludge bed, an overflow layer and a gas-liquid separator are sequentially arranged in the tank body from bottom to top; separation devices for allowing water and biogas to pass through and preventing sludge from rising are respectively arranged between the primary sludge bed and the secondary sludge bed and between the secondary sludge bed and the overflow layer; the water inlet pipe is mounted in the tank body through two mounting brackets which are arranged in parallel up and down respectively; the bottom end of the water inlet pipe extends into the primary sludge bed; according to the utility model, the water inlet pipe extends into the first-stage sludge bed to ensure the stability of an anaerobic environment in the tank body, the separation device and the residue filtering plate are arranged to separate water, biogas generated by reaction and sludge to ensure that the finally treated sewage does not contain sludge, and finally, the water and the biogas are separated through the gas-liquid separator; the sewage is effectively treated and utilized.

Description

Technical Field

[0001] The utility model relates to the technical field of sewage treatment equipment, in particular to an anaerobic tank for sewage treatment. Background Art

[0002] The anaerobic tank is a highly efficient multi-stage internal circulation anaerobic reaction tank. It has the characteristics of small footprint, high organic load, stronger impact resistance, more stable performance, and simpler operation and management. It is suitable for the treatment of high-concentration organic wastewater. The existing anaerobic tanks are not clean enough in the process of sewage separation, and need to be treated multiple times. In addition, some sludge residues are easily brought out during the final export process, which affects the secondary utilization of sewage. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide an anaerobic tank for sewage treatment, which can solve the problem that sewage treatment is not clean and contains sludge residues and needs to be treated multiple times.

[0004] In order to solve the above technical problems, the technical solutions adopted by the present utility model are as follows.

[0005] An anaerobic tank for sewage treatment comprises a tank body, the top of which is connected with a water inlet pipe and a drain pipe respectively; a primary sludge bed, a secondary sludge bed, an overflow layer and a gas-liquid separator are arranged in sequence from bottom to top inside the tank body; separation devices for supplying water and passing biogas and preventing sludge from rising are respectively installed between the primary sludge bed and the secondary sludge bed and between the secondary sludge bed and the overflow layer; the water inlet pipe is installed inside the tank body through two mounting brackets arranged in parallel up and down, and the bottom end of the water inlet pipe extends into the first sludge bed; a drying box is arranged on the top of the tank body, one end of the drying box is connected with an air inlet pipe arranged in the tank body and connected to the gas-liquid separator, and the other end of the drying box is connected with an exhaust pipe.

[0006] In the above-mentioned anaerobic tank for sewage treatment, the separation device includes a plurality of supporting channel steels installed inside the tank body, and the supporting channel steels are evenly arranged at a certain distance; a plurality of diversion layers are installed on the top of the supporting channel steels, and the upper and lower diversion layers are staggered at a certain distance.

[0007] In the above-mentioned anaerobic tank for sewage treatment, the diversion layer comprises a plurality of inverted V-shaped diversion plates arranged evenly at intervals.

[0008] In the above-mentioned anaerobic tank for sewage treatment, the water inlet end of the water inlet pipe is provided with an anti-backflow device for preventing water from flowing back.

[0009] In the above-mentioned anaerobic tank for sewage treatment, the mounting bracket is arranged in a cross shape; a filter plate for filtering the residue rising with the water flow and the biogas is arranged on the mounting bracket located at the upper part of the tank body.

[0010] Due to the adoption of the above technical scheme, the technical progress achieved by the present invention is as follows.

[0011] The utility model provides an anaerobic tank for sewage treatment, which ensures the stability of the anaerobic environment inside the tank by extending a water inlet pipe into the first-level sludge bed, separates water, biogas produced by reaction and sludge by arranging a separation device and a filter residue plate, ensures that the sewage after final treatment does not contain sludge, and finally separates water and biogas through a gas-liquid separator, thereby effectively treating and utilizing the sewage. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the specific structure of the utility model;

[0013] Figure 2 It is a schematic diagram of the specific structure of the filter plate of the utility model;

[0014] Figure 3 It is a schematic diagram of the specific structure of the separation device described in the utility model.

[0015] Among them: 1. Tank body, 2. Water inlet pipe, 3. Drain pipe, 4. Exhaust pipe, 5. Primary sludge bed, 6. Secondary sludge bed, 7. Overflow layer, 8. Mounting bracket, 9. Support channel steel, 10. Diverter plate, 11. Backflow prevention device, 12. Drying box, 13. Filter residue plate. DETAILED DESCRIPTION

[0016] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0017] An anaerobic tank for sewage treatment, such as Figures 1 to 3 As shown, it includes a tank body 1, the top of the tank body 1 is connected with a water inlet pipe 2 and a drainage pipe 3, and the inside of the tank body 1 is provided with a primary sludge bed 5, a secondary sludge bed 6, an overflow layer 7 and a gas-liquid separator from bottom to top, and separation devices for supplying water and passing biogas and preventing sludge from rising are installed between the primary sludge bed 5 and the secondary sludge bed 6, and between the secondary sludge bed 6 and the overflow layer 7.

[0018] The separation device comprises a plurality of support channel steels 9 installed inside the tank body 1, the support channel steels 9 are evenly arranged at a certain distance, and a plurality of diversion layers are installed on the top of the support channel steels 9, such as Figure 1 As shown, the upper and lower diversion layers are staggered with a certain distance between them.

[0019] The flow separation layer includes a plurality of flow separation plates 10 arranged evenly at intervals. The flow separation plates 10 are arranged in an inverted V shape, which can make the water flow and biogas flow along the gaps between the flow separation plates, and separate the brought-up sludge along the side walls.

[0020] The water inlet pipe 2 is installed inside the tank body 1 through two mounting brackets 8 arranged in parallel up and down, and the bottom end extends into the first-level sludge bed 5. The outlet end of the water inlet pipe 2 is slightly higher than the bottom end of the first-level sludge bed 5, which can ensure that the sewage fully reacts with the sludge and is always in an anaerobic environment.

[0021] The water inlet end of the water inlet pipe 2 is provided with an anti-backflow device 11 for preventing water from flowing back, which can prevent the sewage after the reaction from flowing back into the water inlet tank along the water inlet pipe 2.

[0022] A drying box 12 is arranged at the top of the tank body 1 , one end of the drying box 12 is connected to an air inlet pipe arranged in the tank body 1 , the air inlet pipe is connected to the gas-liquid separator, and the other end of the drying box is connected to the exhaust pipe 4 .

[0023] The biogas after the reaction rises and enters the drying box 12 along the air inlet pipe inside the tank body 1 to be dried, and is finally discharged through the exhaust pipe 4.

[0024] The mounting bracket 8 is arranged in a cross shape, and a filter plate 13 is arranged on the mounting bracket 8 located at the upper part of the tank body 1, which can filter the residues rising together with the water flow and the biogas.

[0025] The separation device, the backflow prevention device and the gas-liquid separator described in the utility model are all common existing technologies and can be directly installed and used.

[0026] During use, sewage enters the bottom of the tank body 1 through the water inlet pipe 2 and reacts with the primary sludge bed 5, and then the generated biogas and the reacted sewage are separated by a separation device and enter the secondary sludge bed 6 for secondary reaction. The reacted biogas and sewage are separated from the sludge by a separation device and enter the overflow layer 7. At the same time, after separation by the gas-liquid separator, the biogas enters the drying box 12 through the air inlet pipe and is dried, and then enters the exhaust pipe 4 for collection. The separated water flows into the overflow layer 7 and accumulates to a certain height before being discharged through the drain pipe 3.

[0027] The utility model provides an anaerobic tank for sewage treatment, which ensures the stability of the anaerobic environment inside the tank by extending a water inlet pipe into the first-level sludge bed, separates water, biogas produced by reaction and sludge by arranging a separation device and a filter residue plate, ensures that the sewage after final treatment does not contain sludge, and finally separates water and biogas through a gas-liquid separator so that the water and biogas can be used separately, thereby effectively treating and utilizing the sewage.

Claims

1. An anaerobic tank for sewage treatment, characterized in that: The invention comprises a tank body (1), the top of which is connected to a water inlet pipe (2) and a drainage pipe (3); a primary sludge bed (5), a secondary sludge bed (6), an overflow layer (7) and a gas-liquid separator are arranged in sequence from bottom to top in the tank body (1); a separation device for supplying water and passing biogas and preventing sludge from rising is installed between the primary sludge bed (5) and the secondary sludge bed (6) and between the secondary sludge bed (6) and the overflow layer (7); the water inlet pipe (2) is installed in the tank body (1) through two mounting brackets (8) arranged in parallel up and down, and the bottom end of the water inlet pipe (2) extends into the primary sludge bed (5); a drying box (12) is arranged at the top of the tank body (1), one end of the drying box (12) is connected to an air inlet pipe arranged in the tank body (1) and connected to the gas-liquid separator, and the other end of the drying box is connected to an exhaust pipe (4).

2. The anaerobic tank for sewage treatment according to claim 1, characterized in that: The separation device comprises a plurality of support channel steels (9) installed inside the tank body (1), wherein the support channel steels (9) are evenly arranged at a certain distance from each other; a plurality of diversion layers are installed on the top of the support channel steels (9), wherein the upper and lower diversion layers are staggered at a certain distance from each other.

3. The anaerobic tank for sewage treatment according to claim 2, characterized in that: The flow dividing layer comprises a plurality of inverted V-shaped flow dividing plates (10) which are evenly spaced and arranged.

4. The anaerobic tank for sewage treatment according to claim 1, characterized in that: The water inlet end of the water inlet pipe (2) is provided with an anti-backflow device (11) for preventing water from flowing back.

5. The anaerobic tank for sewage treatment according to claim 1, characterized in that: The mounting bracket (8) is arranged in a cross shape; a filter plate (13) for filtering residues that rise with the water flow and the biogas is arranged on the mounting bracket (8) located at the upper part of the tank body (1).

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