CN211284072U

CN211284072U - Sewage treatment device

Info

Publication number: CN211284072U
Application number: CN201921848803.7U
Authority: CN
Inventors: 陈静; 温玉; 陈英
Original assignee: Shenzhen Duer Environmental Technology Co ltd
Current assignee: Shenzhen Duer Environmental Technology Co ltd
Priority date: 2019-10-30
Filing date: 2019-10-30
Publication date: 2020-08-18
Anticipated expiration: 2029-10-30

Abstract

The utility model discloses a sewage treatment device, which comprises a biochemical tank, a sludge tank, a sedimentation tank and a filter tank; the biochemical tank comprises an anaerobic tank and an aerobic tank which are sequentially communicated, the aerobic tank is communicated with the sedimentation tank through a pipeline, the sedimentation tank is communicated with the filter tank, and the filter tank is provided with a water outlet; the sludge tank comprises a reflux tank and a sludge storage tank which are communicated through a pore passage A, and the sludge storage tank is communicated with the aerobic tank through a pore passage B; the sedimentation tank is communicated with a reflux tank through a sludge discharge pump, and the reflux tank is respectively communicated with the aerobic tank and the anaerobic tank through a reflux pump; the positions of the A pore canal and the B pore canal are higher than the liquid level position in the biochemical pool. The utility model relates to a sewage treatment device with integrated process, low energy consumption and simple operation.

Description

Sewage treatment device

Technical Field

The utility model belongs to the sewage treatment field, concretely relates to sewage treatment device.

Background

At present, domestic sewage is treated by mainly adopting a centralized sewage treatment facility, namely a municipal sewage treatment plant in China, and the method plays an important role in greatly reducing pollution load, realizing the control target of pollutant emission total amount and improving water environment quality. On the one hand, in the urban development and construction of China, due to the fact that the urban drainage pipe network is high in construction cost and long in construction period, the urban drainage pipe network mainly serves built areas, and domestic sewage in urban areas or urban suburban population gathering areas which are not completely constructed in the municipal construction is difficult to collect and enter municipal sewage treatment plants for treatment, such as domestic sewage generated by various sanatoriums, resort villages, villa areas, units far away from urban areas and the like. On the other hand, with the increasingly strengthened environmental protection in China, the problem of rural domestic sewage treatment is emphasized, but compared with the dense urban population, the rural domestic sewage discharge amount is small and scattered, and the centralized collection and treatment by laying a pipe network in a large area are not practical. The domestic sewage which cannot be collected or is uneconomical to be treated centrally by the above-mentioned pipe networks is called decentralized sewage.

The integrated sewage treatment device for treating the dispersed sewage on site has the advantages of low investment cost and convenient management, and can overcome the defects of centralized collection and treatment of the sewage. However, in order to improve the sewage treatment effect, many sewage on-site treatment devices add agents such as PAC (polyaluminium chloride), so that the agent cost and the manual management cost are increased, and the sludge treatment cost is increased due to the generation of a large amount of sludge. Other in situ sewage treatment plants completely moving the process to large-scale sewage plants in towns, e.g. A²The problems of large occupied area, high energy consumption and the like exist in the process of the/O and similar processes.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects of the prior art and provides a sewage treatment device.

In order to achieve the above purpose, the utility model provides a technical scheme does:

the sewage treatment device comprises a biochemical tank (1), a sludge tank (30), a sedimentation tank (40) and a filter tank (50); the biochemical tank (1) comprises an anaerobic tank (10) and an aerobic tank (20) which are sequentially communicated, the aerobic tank (20) is communicated with a sedimentation tank (40) through a pipeline (24), the sedimentation tank (40) is communicated with a filter tank (50), and the filter tank (50) is provided with a water outlet (60); the sludge tank (30) comprises a return tank (31) and a sludge storage tank (32) which are communicated through an A pore passage (35), and the sludge storage tank (32) is communicated with the aerobic tank (20) through a B pore passage (36); the sedimentation tank (40) is communicated with the backflow tank (31) through a sludge discharge pump (41), and the backflow tank (31) is respectively communicated with the aerobic tank (20) and the anaerobic tank (10) through a backflow pump (33); the positions of the A pore passage (35) and the B pore passage (36) are higher than the liquid level position in the biochemical pool.

Preferably, a three-dimensional elastic filler (11) and an A stirring device (12) are arranged in the anaerobic tank (10); the aerobic tank (20) is internally provided with a combined filler (21), the bottom of the inner cavity of the aerobic tank (20) is provided with an aeration pipe (23), and the inner cavity of the aerobic tank (20) is connected with an air blower (22).

Preferably, a B stirring device (34) is arranged in the reflux pool (31).

Preferably, a filler (52) is arranged in the filter tank (50), and a water distribution device (51) is arranged above the filler (52); the sedimentation tank (40) is communicated with the filter tank (50) through a water distribution device (51).

Preferably, the filler (52) is selected from at least one of gravel, limestone, zeolite, steel slag and ceramsite.

Preferably, the water outlet (60) of the filter tank (50) is higher than the bottom of the filter tank (50).

The present invention will be further explained with reference to the following principle:

the sewage on-site treatment device generates a large amount of organic sludge, and the sludge can be reduced through sludge hydrolysis. The hydrolysis product is the microorganism of the biochemical pool to be reused, which can promote the sewage treatment effect. The utility model discloses in, sewage at first gets into the anaerobism pond, and hydrolytic acidification and partial pollutant get rid of under the effect of biomembrane on three-dimensional elastic filler, agitating unit is used for mixing sewage. The sewage then enters an aerobic tank, the combined filler removes pollutants under the condition that an air blower provides oxygen, and the sewage then enters a sedimentation tank through a pipeline for solid-liquid separation. And the sludge precipitated at the bottom of the sedimentation tank is conveyed to the reflux tank through a sludge discharge pump. The sludge is hydrolyzed in the reflux pool. And the sludge in the reflux pool flows back to the anaerobic pool and the aerobic pool through the reflux pump. After a plurality of times of sludge discharge, the liquid level of the backflow pool rises, and the liquid and the sludge in the backflow pool automatically flow into the sludge storage pool through the A pore channel of the sludge storage pool. The sludge can be further hydrolyzed in a sludge storage tank. The hole B of the sludge storage tank and the aerobic tank 20 is higher than the liquid level of the aerobic tank, and the liquid in the sludge storage tank automatically flows into the aerobic tank after reaching the height of the hole. Supernatant in the sedimentation tank enters the filter tank through the uniform water distribution device, is further purified under the action of the filler, flows out through a pore channel at the bottom of the filter tank and is finally discharged from a water outlet. The water outlet is arranged at a certain height from the bottom of the filter, so that the water body is soaked in the filler to keep a certain depth, and the treatment effect is improved.

Compared with the prior art, the beneficial effects of the utility model are that:

(1) the sewage treatment device integrates various treatment methods such as anaerobic treatment, aerobic treatment, sludge hydrolysis reflux and reduction, filter tank filtration and the like.

(2) The sludge in the return tank is hydrolyzed by self to reduce the volume of the sludge and automatically enters the sludge storage tank.

(3) The sludge in the sludge storage tank is further hydrolyzed and automatically flows into the biochemical tank through the pipeline without overflowing, and the sludge hydrolysate is reused in the biochemical tank, so that the sewage treatment effect is improved.

(4) The filter tank further evolves the effluent of the sedimentation tank, and the effluent effect is improved.

(5) The process flow is compact, the operation energy consumption is low, and the process is economical and efficient.

In a word, the utility model discloses the technology is brief, and area is little, and the energy consumption is low, and the treatment effect is good. The sludge can be decomposed in the reflux pool and enter the sludge storage pool for further decomposition, and the sludge can be reduced. The decomposition products enter the biochemical tank to be reused, and the sewage treatment effect can be improved.

Drawings

FIG. 1 is a schematic structural view of the sewage treatment apparatus of the present invention.

In the figure: 1. a biochemical pool; 10. an anaerobic tank; 11. a three-dimensional elastic filler; 12. a, a stirring device; 20. an aerobic tank; 21. combining fillers; 22. a blower; 23. an aeration pipe; 24. a pipeline; 30. a sludge tank; 31. a reflux pool; 32. a sludge storage tank; 33. A reflux pump; 34. b, a stirring device; 35. a pore canal A; 36. a duct B; 40. a sedimentation tank; 41. a sludge discharge pump; 50. a filter chamber; 51. a water distribution device; 52. a filler; 60. and (7) a water outlet.

Detailed Description

Referring to fig. 1, the sewage treatment apparatus includes a biochemical tank 1, a sludge tank 30, a sedimentation tank 40, and a filter 50; the biochemical tank 1 comprises an anaerobic tank 10 and an aerobic tank 20 which are communicated in sequence, the aerobic tank 20 is communicated with a sedimentation tank 40 through a pipeline 24, the sedimentation tank 40 is communicated with a filter 50, and the filter 50 is provided with a water outlet 60; the sludge tank 30 comprises a return tank 31 and a sludge storage tank 32 which are communicated through an A pore passage 35, and the sludge storage tank 32 is communicated with the aerobic tank 20 through a B pore passage 36; the sedimentation tank 40 is communicated with the reflux tank 31 through a sludge discharge pump 41, and the reflux tank 31 is respectively communicated with the aerobic tank 20 and the anaerobic tank 10 through a reflux pump 33; the positions of the A pore canal 35 and the B pore canal 36 are higher than the liquid level position in the biochemical pool.

Wherein, a three-dimensional elastic filler 11 and an A stirring device 12 are arranged in the anaerobic tank 10; the aerobic tank 20 is internally provided with combined filler 21, the bottom of the inner cavity of the aerobic tank 20 is provided with an aeration pipe 23, and the inner cavity of the aerobic tank 20 is connected with an air blower 22. A B stirring device 34 is arranged in the reflux pool 31. A filler 52 is arranged in the filter 50, and a water distribution device 51 is arranged above the filler 52; the sedimentation tank 40 is communicated with the filter 50 through a water distribution device 51. The filler 52 is at least one selected from gravel, limestone, zeolite, steel slag and ceramsite. The water outlet 60 of the filter 50 is higher than the bottom of the filter 50.

Claims

1. A sewage treatment device is characterized by comprising a biochemical tank (1), a sludge tank (30), a sedimentation tank (40) and a filter tank (50); the biochemical tank (1) comprises an anaerobic tank (10) and an aerobic tank (20) which are sequentially communicated, the aerobic tank (20) is communicated with a sedimentation tank (40) through a pipeline (24), the sedimentation tank (40) is communicated with a filter tank (50), and the filter tank (50) is provided with a water outlet (60); the sludge tank (30) comprises a return tank (31) and a sludge storage tank (32) which are communicated through an A pore passage (35), and the sludge storage tank (32) is communicated with the aerobic tank (20) through a B pore passage (36); the sedimentation tank (40) is communicated with the backflow tank (31) through a sludge discharge pump (41), and the backflow tank (31) is respectively communicated with the aerobic tank (20) and the anaerobic tank (10) through a backflow pump (33); the positions of the A pore passage (35) and the B pore passage (36) are higher than the liquid level position in the biochemical pool.

2. The sewage treatment device according to claim 1, wherein a three-dimensional elastic filler (11) and an A stirring device (12) are arranged in the anaerobic tank (10); the aerobic tank (20) is internally provided with a combined filler (21), the bottom of the inner cavity of the aerobic tank (20) is provided with an aeration pipe (23), and the inner cavity of the aerobic tank (20) is connected with an air blower (22).

3. The wastewater treatment plant according to claim 1, characterized in that a B stirring device (34) is arranged in the return basin (31).

4. The sewage treatment device according to claim 1, wherein a filler (52) is arranged in the filter tank (50), and a water distribution device (51) is arranged above the filler (52); the sedimentation tank (40) is communicated with the filter tank (50) through a water distribution device (51).

5. The wastewater treatment apparatus according to claim 4, wherein the filler (52) is at least one selected from gravel, limestone, zeolite, steel slag, and ceramic particles.

6. Sewage treatment plant according to claim 1, characterised in that the water outlet (60) of said filter tank (50) is higher than the bottom of the filter tank (50).