CN210340640U

CN210340640U - Sewage treatment system

Info

Publication number: CN210340640U
Application number: CN201921557538.7U
Authority: CN
Inventors: 张香武; 周宏伟
Original assignee: Changchun Xiangtong Pharmaceutical Co Ltd
Current assignee: Changchun Xiangtong Pharmaceutical Co Ltd
Priority date: 2019-09-18
Filing date: 2019-09-18
Publication date: 2020-04-17
Anticipated expiration: 2029-09-18

Abstract

The utility model provides a sewage treatment system, which comprises a filtering tank, a primary sedimentation tank, a biochemical treatment tank, a secondary sedimentation tank and an air floatation tank which are communicated through pipelines in sequence, wherein the filtering tank comprises a coarse grating, a fine grating, a pump room and a lift pump; the biochemical treatment tank sequentially comprises an anaerobic tank, an anoxic tank and an aerobic tank, a heat-insulating cover is arranged above the biochemical treatment tank, the anoxic tank is respectively communicated with the anaerobic tank and the aerobic tank, an air blower is arranged above the aerobic tank, an aeration pipe is arranged at the bottom of the aerobic tank, and the output end of the air blower extends into the bottom of the aerobic tank and is communicated with the aeration pipe; the bottom of the secondary sedimentation tank is communicated with a sludge treatment device through a pipeline, the sludge treatment device comprises a sludge concentration tank and a sludge dewatering machine, the secondary sedimentation tank is communicated with the sludge concentration tank, and a sludge scraping device is arranged on the sludge concentration tank. The utility model discloses can effectual processing sewage problem.

Description

Sewage treatment system

Technical Field

The utility model relates to a water treatment, concretely relates to sewage treatment system.

Background

In daily life of people, a lot of waste water and garbage are produced, and some small towns below the city have imperfect drainage facilities without standard sewage treatment systems, so that the phenomenon of cross flow of sewage and domestic sewage often occurs, and the domestic sewage permeates into the ground bottom and easily pollutes water resources and soil quality of soil; meanwhile, domestic garbage is randomly stacked, and after rainstorm comes, sewage and domestic garbage flow into rivers or farmlands along with rainwater, so that white pollution is caused, water quality is influenced, and environmental sanitation is also influenced. Especially in cold, poor regions, sewage treatment projects cannot be operated and operating costs are high. Therefore, it is urgently needed to design a sewage treatment system aiming at the situation of the areas so as to improve the living environment of people and improve the living quality of people.

SUMMERY OF THE UTILITY MODEL

The utility model provides a sewage treatment system to the problem pointed out in the background art, can effectual processing sewage problem.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a sewage treatment system comprises a filter tank, a primary sedimentation tank, a biochemical treatment tank, a secondary sedimentation tank and an air floatation tank which are sequentially communicated through pipelines, wherein the filter tank comprises a coarse grating, a fine grating, a pump room and a lift pump;

the biochemical treatment tank sequentially comprises an anaerobic tank, an anoxic tank and an aerobic tank, a heat-insulating cover is arranged above the biochemical treatment tank, the anoxic tank is respectively communicated with the anaerobic tank and the aerobic tank, an air blower is arranged above the aerobic tank, an aeration pipe is arranged at the bottom of the aerobic tank, and the output end of the air blower extends into the bottom of the aerobic tank and is communicated with the aeration pipe;

the bottom of the secondary sedimentation tank is communicated with a sludge treatment device through a pipeline, the sludge treatment device comprises a sludge concentration tank and a sludge dewatering machine, the secondary sedimentation tank is communicated with the sludge concentration tank, and a sludge scraping device is arranged on the sludge concentration tank.

Furthermore, suspended carrier filler is also put into the aerobic tank.

Further, the suspension carrier filler is a high density polyethylene carrier filler.

Further, the mud scraping device comprises a bearing plate, a rotating motor, a rotating shaft, a mud scraping knife rest and a mud scraping knife, wherein the bearing plate is erected over the mud concentration tank, the rotating motor is arranged at the middle of the bearing plate, the rotating shaft penetrates through the bearing plate and is connected with the rotating motor, the mud scraping knife rest is vertically connected to the rotating shaft, and the mud scraping knife is arranged on the outer side edge of the mud scraping knife rest and is parallel to the rotating shaft.

Furthermore, a plurality of aeration holes are formed in the aeration pipe.

Further, a sewage secondary treatment pipeline is communicated between the secondary sedimentation tank and the biochemical treatment tank.

Compared with the prior art, the utility model has the advantages of it is following:

(1) a coarse grating and a fine grating are arranged in the filtering tank, and after sewage passes through the coarse grating and the fine grating in sequence, larger floaters are isolated to prevent blockage;

(2) the biochemical treatment tank comprises an anaerobic tank, an anoxic tank and an aerobic tank, the biochemical treatment tank is also provided with a heat-insulating cover, organic matters in the sewage are degraded under the function of microbial bacteria, the concentration of pollutants in the sewage is reduced, and the heat-insulating cover can insulate the biochemical reaction tank in the biochemical treatment process so as to prevent the reaction efficiency from being influenced by too low temperature;

(3) the aerobic tank is filled with suspended carrier filler, because the suspended carrier has larger specific surface area, the number of microorganisms attached to the surface and the interior of the suspended carrier is large, the types of the microorganisms are various, the sludge concentration in the reactor is 5-10 times of that of a common activated sludge method under the general condition, and the total concentration can reach 30-40g/L, so that the organic matter removal efficiency can be greatly improved;

(4) be provided with on the sludge thickening tank and scrape mud device, can scrape the mud of adhering to on the sludge thickening tank inner wall, reduce piling up of mud, improve sludge thickening tank's life.

Drawings

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

FIG. 2 is a schematic structural view of the filtering tank of the present invention;

FIG. 3 is a schematic structural view of the biochemical treatment tank of the present invention;

fig. 4 is a schematic structural view of the sludge thickener of the present invention.

Description of the reference numerals

1, a filtering tank; 2, primary sedimentation tank; 3, a biochemical treatment tank; 4, a secondary sedimentation tank; 5, an air floatation tank; 6 sludge concentration tank; 7, a sludge dewatering machine; 8, a blower; 9, a heat preservation cover; 11, coarse grating; 12, fine grids; 13 pump room; 14 a lift pump; 31 an anaerobic tank; a 32 anoxic tank; 33, an aerobic tank; 61 bearing plates; 62 rotating the motor; 63 rotating the shaft; 64 a mud scraping knife rest; 65 a mud scraper; 331 suspending a carrier filler; 332 an aeration pipe; 333 aeration holes.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1 and 2, a sewage treatment system comprises a filter tank 1, a primary sedimentation tank 2, a biochemical treatment tank 3, a secondary sedimentation tank 4 and an air flotation tank 5 which are sequentially communicated through a pipeline, wherein the filter tank 1 comprises a coarse grating 11, a fine grating 12, a pump room 13 and a lift pump 14, the coarse grating 11 is communicated with the pump room 13, and the lift pump 14 is arranged in the pump room 13 and is communicated with the fine grating 12 through a pipeline; after the sewage passes through the coarse grating 11 and the fine grating 12 in sequence, larger floating objects are isolated, and the water pump is prevented from being blocked.

Referring to fig. 3, the biochemical treatment tank 3 sequentially includes an anaerobic tank 31, an anoxic tank 32 and an aerobic tank 33, a heat preservation cover 9 is erected above the biochemical treatment tank 3, the anoxic tank 32 is respectively communicated with the anaerobic tank 31 and the aerobic tank 33, an air blower 8 is arranged above the aerobic tank 33, an aeration pipe 332 is arranged at the bottom of the aerobic tank 33, a plurality of aeration holes 333 are formed in the aeration pipe 332, an output end of the air blower 8 extends into the bottom of the aerobic tank 33 to be communicated with the aeration pipe 332, organic matters in sewage are subjected to degradation treatment under the function of microorganisms, the concentration of pollutants in the sewage is reduced, and in the biochemical treatment process, the heat preservation cover 9 can preserve heat of the biochemical reaction tank to prevent the reaction efficiency from being affected due to too low temperature.

Referring to fig. 4, the bottom of the secondary sedimentation tank 4 is communicated with a sludge treatment device through a pipeline, the sludge treatment device comprises a sludge concentration tank 6 and a sludge dewatering machine 7, the secondary sedimentation tank 4 is communicated with the sludge concentration tank 6, and a sludge scraping device is arranged on the sludge concentration tank 6, so that sludge attached to the inner wall of the sludge concentration tank 6 can be scraped, accumulation of sludge is reduced, and the service life of the sludge concentration tank 6 is prolonged. A sewage secondary treatment pipeline is communicated between the secondary sedimentation tank 4 and the biochemical treatment tank 3, and secondary sewage treatment can be carried out.

Referring to fig. 3, a suspension carrier filler 331 is also added into the aerobic tank 33, the suspension carrier filler 331 is a high density polyethylene carrier filler, and since the suspension carrier has a large specific surface area, the number of microorganisms attached to the surface and inside of the suspension carrier is large, the number of types of microorganisms is large, the sludge concentration in the reactor is generally 5-10 times that of the ordinary activated sludge process, and the total concentration can be as high as 30-40g/L, so that the organic matter removal efficiency can be greatly improved.

Referring to fig. 4, the mud scraping device includes a bearing plate 61, a rotating motor 62, a rotating shaft 63, a mud scraping cutter frame 64 and a mud scraping cutter 65, the bearing plate 61 is erected right above the mud concentration tank 6, the rotating motor 62 is arranged in the middle of the bearing plate 61, the rotating shaft 63 penetrates through the bearing plate 61 and is connected with the rotating motor 62, the mud scraping cutter frame 64 is square-shaped, is hollow and is vertically connected to the rotating shaft 63, and the mud scraping cutter 65 is installed on the outer side edge of the mud scraping cutter frame 64 and is parallel to the rotating shaft. The rotating motor 62 can drive the rotating shaft 63, and the rotating shaft 63 drives the sludge scraping tool rest 64 to rotate clockwise or anticlockwise, so that the purposes of scraping sludge attached to the inner wall of the sludge concentration tank 6, reducing sludge accumulation and prolonging the service life of the sludge concentration tank 6 are achieved.

The filtering tank 1 of the utility model is internally provided with the thick grating 11 and the thin grating 12, and after sewage passes through the thick grating 11 and the thin grating 12 in sequence, larger floaters are isolated to prevent blockage; the biochemical treatment tank 3 internally comprises an anaerobic tank 31, an anoxic tank 32 and an aerobic tank 33, the biochemical treatment tank 3 is also provided with a heat-insulating cover 9, organic matters in the sewage are degraded under the function of microbial bacteria, the concentration of pollutants in the sewage is reduced, and the heat-insulating cover 9 can insulate the biochemical reaction tank in the biochemical treatment process so as to prevent the reaction efficiency from being influenced by too low temperature; the aerobic tank 33 is filled with the suspended carrier filler 331, because the suspended carrier has a large specific surface area, the number of microorganisms attached to the surface and inside of the suspended carrier is large, the types of the microorganisms are many, the sludge concentration in the reactor is 5-10 times of that in a common activated sludge method under the general condition, and the total concentration can be as high as 30-40g/L, so that the organic matter removal efficiency can be greatly improved; the sludge scraping device is arranged on the sludge concentration tank 6, so that sludge attached to the inner wall of the sludge concentration tank 6 can be scraped, accumulation of sludge is reduced, and the service life of the sludge concentration tank 6 is prolonged.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. A sewage treatment system is characterized by comprising a filter tank, a primary sedimentation tank, a biochemical treatment tank, a secondary sedimentation tank and an air floatation tank which are sequentially communicated through pipelines, wherein the filter tank comprises a coarse grating, a fine grating, a pump room and a lift pump;

the biochemical treatment tank sequentially comprises an anaerobic tank, an anoxic tank and an aerobic tank, a protective cover is arranged above the biochemical treatment tank, the anoxic tank is respectively communicated with the anaerobic tank and the aerobic tank, an air blower is arranged above the aerobic tank, an aeration pipe is arranged at the bottom of the aerobic tank, and the output end of the air blower extends into the bottom of the aerobic tank and is communicated with the aeration pipe;

2. The wastewater treatment system according to claim 1, wherein a suspended carrier filler is further introduced into the aerobic tank.

3. The wastewater treatment system of claim 2, wherein the suspended carrier filler is a high density polyethylene carrier filler.

4. The sewage treatment system of claim 1, wherein the scraping device comprises a bearing plate, a rotating motor, a rotating shaft, a scraping knife rest and a scraping knife, the bearing plate is erected right above the sludge concentration tank, the rotating motor is arranged on the middle part of the bearing plate, the rotating shaft penetrates through the bearing plate and is connected with the rotating motor, the scraping knife rest is vertically connected on the rotating shaft, and the scraping knife is arranged on the outer side edge of the scraping knife rest and is parallel to the rotating shaft.

5. The sewage treatment system of claim 1, wherein the aeration pipe is provided with a plurality of aeration holes.

6. The sewage treatment system of claim 1, wherein a sewage secondary treatment pipeline is further communicated between the secondary sedimentation tank and the biochemical treatment tank.