CN214031882U

CN214031882U - Countercurrent degassing precipitator

Info

Publication number: CN214031882U
Application number: CN202021906761.0U
Authority: CN
Inventors: 田强; 夏添; 林波; 代玲玲; 黄霞; 曾香
Original assignee: Chongqing Baiou Environmental Protection Technology Co ltd
Current assignee: Chongqing Baiou Environmental Protection Technology Co ltd
Priority date: 2020-09-03
Filing date: 2020-09-03
Publication date: 2021-08-24
Anticipated expiration: 2030-09-03

Abstract

The utility model discloses a degassing device, in particular to a countercurrent degassing precipitator, which comprises a precipitator body, wherein the precipitator body is provided with a water inlet, a water outlet and a sludge discharge port, a primary separation area and a secondary separation area are arranged in the precipitator body, the water inlet is arranged at the top of the precipitator body where the primary separation area is arranged, and the water outlet is arranged at the top of the precipitator body where the secondary separation area is arranged; the sludge discharge port is arranged at the bottom of the device body. The countercurrent degassing precipitator and the method designed by the scheme have the advantages of good separation effect, low cost and strong practicability.

Description

Countercurrent degassing precipitator

Technical Field

The utility model relates to a degasser especially relates to a counter-current degassing precipitator.

Background

Anaerobic sewage treatment technology is an important part in sewage biochemical treatment. The anaerobic treatment is based on the treatment of water by using sludge, and more gas is generated in the anaerobic treatment process and adheres to the sludge to float. The sludge running phenomenon can be seriously generated due to the lack of reasonable drainage treatment of the generated methane. Some degassing devices also exist in the prior art, but the degassing device in the prior art has a complex structure, poor degassing effect and high cost.

Therefore, the skilled in the art is dedicated to develop a counter-current degassing precipitator with good degassing effect, low cost and strong practicability.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned defects in the prior art, the technical problem to be solved in the present invention is to provide a counter-current degassing precipitator to solve the disadvantages of low degassing efficiency, poor degassing effect and high cost of the reactor in the prior art.

In order to achieve the purpose, the utility model provides a counter-current degassing precipitator, which is characterized in that: the device comprises a device body, wherein a water inlet, a water outlet and a sludge discharge port are arranged on the device body, a primary separation area and a secondary separation area are arranged in the device body, the water inlet is arranged at the top of the device body where the primary separation area is located, and the water outlet is arranged at the top of the device body where the secondary separation area is located; the sludge discharge port is arranged at the bottom of the device body.

Furthermore, the bottom of the device body is of an inverted cone structure, and the sludge discharge port is arranged at the central position of the bottom of the shell.

Further, the water outlet flange is connected with a water outlet pipe.

Furthermore, a partition plate is arranged in the device body, the bottom end of the partition plate extends to the middle lower part of the device body, and the device body is divided into a primary separation area and a secondary separation area by the partition plate.

Furthermore, the tip of division board is equipped with the drainage plate, the drainage plate is partial to water inlet one side and is set up.

Furthermore, the water inlet is arranged at the top of the device body where the primary separation area is located, and the water outlet is arranged at the top of the device body where the secondary separation area is located.

Furthermore, a plurality of air guide plates are arranged in the primary separation area and the secondary separation area, and the air guide plates in the primary separation area are arranged at equal intervals; and a plurality of air guide plates in the secondary separation area are arranged at equal intervals.

Furthermore, the included angle formed between the air guide plate and the vertical direction is 45-75 degrees.

Furthermore, the precipitator body, the partition plate, the drainage plate and the air guide plate of the precipitator are all made of PPR or carbon steel.

The invention also provides a counter-current degassing and precipitating method which comprises the counter-current degassing and precipitating device, wherein the counter-current degassing and precipitating device is arranged at the top in the reactor, after wastewater enters the reactor through the water distributor, pollutants in the wastewater are decomposed by microorganisms to generate biogas, the rising biogas drives sludge to rise upwards to form a gas-liquid-solid three-phase mixture, and the gas-liquid-solid three-phase mixture rises in the reactor and enters the counter-current degassing and precipitating device.

Further, the reactor is an anaerobic reactor, and the solid is granular sludge and/or flocculent sludge.

The utility model has the advantages that: (1) the utility model adopts the design of two-stage air guide plates, which ensures the thorough separation of gas, liquid and solid phases and ensures the clear water; (2) the gas guide plates are arranged, so that the gas guide plates have strong gas guide capacity and can completely remove the generated methane at the first-stage three-phase separator; (3) because the sludge is also mixed with the methane, the methane in the sludge can be removed to the maximum extent due to the flow direction of the countercurrent water flow, and the methane is prevented from entering a settling zone to interfere the solid-liquid separation effect; (4) the arrangement of two stages of air guide plates ensures that the anaerobic reactor has higher precipitation load; (5) the multi-layer air guide plates which are uniformly arranged ensure stable liquid flow in a settling zone; (6) the separated sludge can quickly return to the reactor, and the sludge concentration and the longer sludge age in the reactor are maintained; (7) on the basis of ensuring the structure and the separation effect, the material is revolutionized, the traditional method of using carbon steel and stainless steel materials is abandoned, the carbon steel is easy to corrode and has heavy weight, the stainless steel has high cost and heavy weight, and the utility model has good corrosion resistance, low cost and light weight; (8) a water distribution device can be integrated in the biogas collection zone according to the type of the anaerobic reactor; (9) the equipment is designed in a standard and modularized way, is flexible to install and is suitable for all places needing gas, liquid and solid separation; (10) can replace any sedimentation tank or degasser, such as a hydrolytic acidification sedimentation tank, an aerobic sedimentation tank and the like, and reduce the occupied area of the corresponding sedimentation tank; (11) the sludge backflow and the degassing are completely separated, the solid independently flows back, and the cross flow is not generated, so that the device is suitable for gas-liquid-solid three-phase separation under any condition and is not influenced by factors such as pool shape, pool depth and the like; (12) can be used for the high-efficiency separation of anaerobic ammonia oxidation, aerobic granular sludge and other processes.

Drawings

Fig. 1 is a schematic structural diagram of a countercurrent degassing precipitator of the present invention.

In the figure, 1 is a reactor, 2 is a precipitator, 3 is a device body, 4 is a water inlet, 5 is a water outlet, 6 is a sludge discharge port, 7 is a primary separation zone, 8 is a secondary separation zone, 9 is a water outlet pipe, 10 is a separation plate, 11 is a flow guide plate, 12 is a gas guide plate, an arrow 13 is a water flow direction, an arrow 14 is a methane flow direction, and an arrow 15 is a sludge flow direction.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and examples, wherein it is noted that, in the description of the invention, the terms "upper", "lower", "left", "right", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular manner, and therefore should not be construed as limiting the present invention. The terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

As shown in fig. 1, the present invention provides a counter-current degassing precipitator, which comprises a reactor 1, wherein the reactor 1 is an anaerobic reactor, sludge is contained in the anaerobic reactor, and a precipitator 2 is disposed in the reactor 1. The precipitator 2 comprises a precipitator body 3, the shape of the precipitator body 3 can be round or square according to the shape of the reactor 1, a water inlet 4, a water outlet 5 and a sludge discharge port 6 are arranged on the precipitator body 3, and the water outlet 5 is connected with a water outlet pipe 9 in a flange mode.

The device body 3 is internally provided with a vertically downward partition plate 10, the top end of the partition plate 10 is fixed at the top of the device body 3, the bottom end of the partition plate 10 extends to the middle lower part of the device body 3, and the partition plate 10 divides the device body 3 into a primary separation area 7 and a secondary separation area 8. The tip of division board 10 extends there is drainage plate 11, and drainage plate 11 is partial to delivery port 4 one side and sets up, and the contained angle between drainage plate 11 and the division board 10 is 120 to 150, preferably 135. Because the sludge is also mixed with the methane, the methane in the sludge can be removed to the maximum extent due to the flow direction of the countercurrent water flow, and the methane is prevented from entering the subsequent secondary separation zone 8 to interfere the solid-liquid separation effect.

A plurality of air guide plates 12 which are arranged in a certain angle in the vertical direction are arranged in the primary separation area 7 and the secondary separation area 8, specifically, the included angle formed by the air guide plates and the vertical direction is 45-75 degrees, and the plurality of air guide plates 12 in the primary separation area 7 are arranged at equal intervals; the plurality of air guide plates 12 in the secondary separation area 8 are arranged at equal intervals. The design of two-stage air guide plates 12 is adopted, so that the thorough separation of three phases of gas, liquid and solid is ensured, and the clear effluent is ensured. The gas guide plate 12 is arranged, has strong gas guide capacity, and can separate gas (methane), liquid (water) and solid (sludge) in a first stage to completely remove the methane. The arrangement of the two stages of air guide plates 12 ensures that the anaerobic reactor has higher sedimentation load. The uniformly arranged multiple layers of air guide plates 12 ensure stable liquid flow in the settling zone

The water inlet 4 is arranged at the top of the side wall of the device body 3 where the primary separation area 7 is arranged, and the water outlet 5 is arranged at the top of the side wall of the device body 3 where the secondary separation area 8 is arranged. The bottom of the device body 3 is of an inverted cone structure, and the sludge discharge port 6 is arranged at the central position of the bottom of the device body 3. The separated sludge can quickly return to the reactor 1, and the concentration and the longer sludge age of the sludge in the reactor 1 are maintained; the sludge backflow and the degassing are completely separated, the solid independently flows back, and the cross flow is not generated, so that the device is suitable for gas-liquid-solid three-phase separation under any condition and is not influenced by factors such as pool shape, pool depth and the like. In the figure, arrow 13 indicates the water flow direction, arrow 14 indicates the methane flow direction, and arrow 15 indicates the sludge flow direction.

Wherein, the material of the precipitator body 3, the partition plate 10, the flow guide plate 11 and the gas guide plate 12 of the precipitator 2 is PPR or carbon steel, and the specific material can be determined according to the type of wastewater. The utility model has the advantages of good corrosion resistance, low cost and light weight. Can replace any sedimentation tank or degasser, such as a hydrolytic acidification sedimentation tank, an aerobic sedimentation tank and the like, and reduce the occupied area of the corresponding sedimentation tank.

The scheme also provides a countercurrent degassing and precipitating method which comprises the countercurrent degassing and precipitating device, wherein the countercurrent degassing and precipitating device is arranged at the top in the reactor, the reactor is specifically an anaerobic reactor, after wastewater enters the reactor through the water distributor, pollutants in the wastewater are decomposed by microorganisms to generate biogas, the rising biogas drives sludge to rise upwards to form a gas-liquid-solid three-phase mixture, and the gas-liquid-solid three-phase mixture rises in the reactor and enters the countercurrent degassing and precipitating device. The microorganism in the sludge decomposes the pollutant in the wastewater, the gas-liquid-solid three-phase mixture rises and enters the countercurrent degassing precipitator, the methane is discharged from the gas-liquid-solid three-phase mixture in the primary separation zone, and the sludge is discharged downwards from the countercurrent degassing precipitator in the secondary separation zone and enters the anaerobic reactor to circulate in a reciprocating manner. Preferably, the rising flow velocity of the wastewater in the anaerobic reactor is not higher than 5 m/h.

The foregoing has described in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be devised by those skilled in the art in light of the teachings of the present invention without undue experimentation. Therefore, the technical solutions that can be obtained by a person skilled in the art through logic analysis, reasoning or limited experiments based on the prior art according to the concepts of the present invention should be within the scope of protection defined by the claims.

Claims

1. A counter-current degassing precipitator is characterized in that: the device comprises a device body, wherein a water inlet, a water outlet and a sludge discharge port are arranged on the device body, a primary separation area and a secondary separation area are arranged in the device body, the water inlet is arranged at the top of the device body where the primary separation area is located, and the water outlet is arranged at the top of the device body where the secondary separation area is located; the sludge discharge port is arranged at the bottom of the device body.

2. A counter-current degassing settler according to claim 1, wherein: the bottom of the device body is of an inverted cone structure, and the sludge discharge port is arranged at the central position of the bottom of the shell.

3. A counter-current degassing settler according to claim 1, wherein: and the water outlet flange is connected with a water outlet pipe.

4. A counter-current degassing settler according to claim 1, wherein: the separator is arranged in the separator body, the bottom end of the separator extends to the middle lower part of the separator body, and the separator divides the separator body into a primary separation area and a secondary separation area.

5. A counter-current degassing settler according to claim 4, wherein: the end of the partition plate is provided with a drainage plate, and the drainage plate is arranged at one side of the water inlet in a deviation manner.

6. A counter-current degassing settler according to claim 4, wherein: the water inlet is arranged at the top of the device body where the primary separation area is located, and the water outlet is arranged at the top of the device body where the secondary separation area is located.

7. A counter-current degassing settler according to claim 4, wherein: a plurality of air guide plates are arranged in the primary separation area and the secondary separation area, and the air guide plates in the primary separation area are arranged at equal intervals; and a plurality of air guide plates in the secondary separation area are arranged at equal intervals.

8. A counter-current degassing settler according to claim 7, wherein: the included angle formed between the air guide plate and the vertical direction is 45-75 degrees.

9. A countercurrent degassing settler according to any one of claims 1 to 8, characterized by: the precipitator body, the partition plate, the drainage plate and the air guide plate of the precipitator are all made of PPR or carbon steel.