CN214244105U

CN214244105U - A multistage AO sewage treatment system for high concentration aquaculture wastewater

Info

Publication number: CN214244105U
Application number: CN202022574312.7U
Authority: CN
Inventors: 俞捷径; 周营; 徐芳艳; 林跃; 罗红霞; 王秀明
Original assignee: Guangodng Yikangsheng Environmental Protection Technology Co ltd
Current assignee: Guangodng Yikangsheng Environmental Protection Technology Co ltd
Priority date: 2020-11-10
Filing date: 2020-11-10
Publication date: 2021-09-21
Anticipated expiration: 2030-11-10

Abstract

The utility model discloses a multistage AO sewage treatment system for high-concentration culture wastewater, which comprises a primary sedimentation tank, an anaerobic tank, a first anoxic tank, a first aerobic tank, a second anoxic tank, a third aerobic tank and a final sedimentation tank which are connected in sequence; the first anoxic tank, the first aerobic tank, the second anoxic tank and the third aerobic tank are all internally provided with a lifting frame body capable of being lifted, the middle part of the lifting frame body is provided with a filling module, and the bottom of the lifting frame body is provided with an aeration device; the aeration devices are detachably and hermetically connected with the main aeration pipe, and the air supply end of the main aeration pipe is connected with an aeration fan. Through the utility model discloses realize effectively carrying out the effective processing to high concentration aquaculture wastewater, satisfy emission standard.

Description

A multistage AO sewage treatment system for high concentration aquaculture wastewater

Technical Field

The utility model relates to a sewage treatment system field, concretely relates to multistage AO sewage treatment system for high concentration aquaculture wastewater.

Background

Livestock and poultry breeding is a supporting industry for agricultural and rural economic development in China, and in recent years, with the increase of the demand of China for meat products and the promotion of agricultural industrialization, large-scale, centralized and industrialized breeding is promoted, and the number of small-sized breeding farms is continuously increased. The problems of the excrement and sewage discharge and the main pollutant discharge of livestock and poultry breeding are obvious, and according to investigation, the livestock and poultry breeding becomes a main pollution source of non-point source pollution of agriculture in China, and the living environment safety and the human health of corresponding environment functional areas are seriously threatened.

At present, for livestock and poultry breeding wastewater, a complete set of sewage treatment system is rarely available in the market, the concentration of the livestock and poultry breeding wastewater is generally high, and the livestock and poultry breeding wastewater is difficult to treat and discharge after reaching the standard by a general process.

SUMMERY OF THE UTILITY MODEL

The utility model aims at designing a multistage AO sewage treatment system for high concentration aquaculture wastewater, making it realize effectively carrying out effective treatment to high concentration aquaculture wastewater, satisfying emission standard.

In order to achieve the above object, the utility model provides a following technical scheme:

a multi-stage AO sewage treatment system for high-concentration aquaculture wastewater comprises a primary sedimentation tank, an anaerobic tank, a first anoxic tank, a first aerobic tank, a second anoxic tank, a third aerobic tank and a final sedimentation tank which are connected in sequence; the first anoxic tank, the first aerobic tank, the second anoxic tank and the third aerobic tank are all internally provided with a liftable lifting frame body, the middle part of the lifting frame body is provided with a filling module, and the bottom of the lifting frame body is provided with a plurality of aeration devices; the aeration devices are detachably and hermetically connected with the main aeration pipe, and the air supply end of the main aeration pipe is connected with an aeration fan.

And further, a sludge air-stripping air pipe is also arranged, and two ends of the sludge air-stripping air pipe are respectively connected with the bottom of the final sedimentation tank and the anaerobic tank. By the arrangement, the sludge which is deposited at the bottom of the final sedimentation tank and is rich in microorganisms is refluxed to the anaerobic tank by the sludge air stripping air pipe, so that the effects of diluting inlet water and improving the microbial biomass of the system are achieved.

Furthermore, the aeration device is detachably and hermetically connected with the main aeration pipe through a movable joint. So set up, realize the dismantled sealing connection between aeration equipment and the aeration main pipe through the union, simple structure practicality is strong.

Further, the aeration devices positioned in the anaerobic tank, the first anoxic tank and the second anoxic tank are cutting aerators; the aeration devices positioned in the first aerobic tank, the second aerobic tank and the third aerobic tank are microporous aerators. So set up, the cutting aerator mainly plays the stirring and pushes away the effect of flowing, ensures that the active sludge in anaerobism pond and the oxygen deficiency pond can effective absorption, the organic matter in the degradation waste water, realizes mud and mixes in waste water. The microporous aerator mainly supplies oxygen to aerobic microorganisms of the system, and ensures that the microorganisms in the aerobic tank can effectively react with the wastewater.

Furthermore, a frequency converter and a time controller are arranged at the aeration fan. So set up, mutually support through converter and time controller and adjust the aeration rate for system dissolved oxygen maintains at comparatively stable scope, specifically, anoxic zone dissolved oxygen is below 0.5, and aerobic zone dissolved oxygen is between 0.5-1.0, makes anaerobism, oxygen deficiency and aerobic microorganism can coexist in the system simultaneously, realizes the high-efficient processing of waste water.

Further, the primary sedimentation tank, the anaerobic tank, the first anoxic tank, the first aerobic tank, the second anoxic tank, the third aerobic tank and the final sedimentation tank are distributed in a serpentine shape. So set up, adopt snakelike distribution overall arrangement, do benefit to and arrange in limited space, it is more reasonable to distribute.

Further, sludge drain pipes are arranged at the bottoms of the primary sedimentation tank and the final sedimentation tank. So set up, utilize the mud calandria in time to drain away the mud of just sinking pond and final sedimentation bottom of the pond, avoid piling up.

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

anaerobic treatment and multi-stage AO alternation are adopted to realize the full self-mixing of biochemical liquid in the pool body. Wherein the two aerobic tanks are continuously arranged, so that the time of the wastewater existing in the aerobic tanks is prolonged by increasing the number of the aerobic tanks under the condition of not changing the inflow speed of the wastewater, and the activated sludge in the wastewater has sufficient time to carry out aerobic respiration, thereby decomposing organic matters into inorganic matters.

With aeration equipment and filler module setting on the lifting frame body that can promote, for examining the car and changing provide convenience.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic structural view of the lifting frame body of the present invention;

the names of the components identified in the figures are as follows:

1. a primary sedimentation tank; 2. an anaerobic tank; 3. a first anoxic tank; 4. a first aerobic tank; 5. a second aerobic tank; 6. a second anoxic tank; 7. a third aerobic tank; 8. a final sedimentation tank; 9. lifting the frame body; 10. a filler module; 11. an aeration device; 1101. cutting an aerator; 1102. a microporous aerator; 12. an aeration main pipe; 13. an aeration fan; 14. a sludge gas stripping air pipe; 15. sludge calandria

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, only some embodiments, not all embodiments, of the present invention are described. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Example (b):

a multi-stage AO sewage treatment system for high-concentration aquaculture wastewater comprises a primary sedimentation tank 1, an anaerobic tank 2, a first anoxic tank 3, a first aerobic tank 4, a second aerobic tank 5, a second anoxic tank 6, a third aerobic tank 7 and a final sedimentation tank 8 which are connected in sequence; the first anoxic tank 3, the first aerobic tank 4, the second aerobic tank 5, the second anoxic tank 6 and the third aerobic tank 7 are all internally provided with a liftable lifting frame body 9, the middle part of the lifting frame body 9 is provided with a filler module 10, and the bottom of the lifting frame body 9 is provided with a plurality of aeration devices 11; the plurality of aeration devices 11 are detachably and hermetically connected with the main aeration pipe 12, and the air supply end of the main aeration pipe 12 is connected with an aeration fan 13.

And a sludge air-stripping air pipe 14 is also arranged, and two ends of the sludge air-stripping air pipe 14 are respectively connected with the bottom of the final sedimentation tank 8 and the anaerobic tank 2. By the arrangement, the sludge which is deposited at the bottom of the final sedimentation tank 8 and is rich in microorganisms is refluxed to the anaerobic tank 2 by the sludge air stripping air pipe 14, so that the effects of diluting inlet water and improving the microbial biomass of the system are achieved.

The aeration device 11 is detachably and hermetically connected with the main aeration pipe 12 through a movable joint. So set up, realize the dismantled sealing connection between aeration equipment 11 and the aeration main pipe 12 through the union, simple structure practicality is strong.

The aeration devices 11 positioned in the anaerobic tank 2, the first anoxic tank 3 and the second anoxic tank 6 are cutting aerators 1101; the aeration devices 11 in the first aerobic tank, the second aerobic tank 5 and the third aerobic tank 7 are microporous aerators 1102. So set up, cutting aerator 1101 mainly plays the effect of stirring and plug flow, ensures that the active sludge in anaerobism pond 2 and the oxygen deficiency pond can effective absorption, the organic matter in the degradation waste water, realizes mud and waste water mixing. The micro-porous aerator 1102 mainly supplies oxygen to the aerobic microorganisms of the system to ensure that the microorganisms in the aerobic tank can effectively react with the wastewater.

The aeration fan 13 is provided with a frequency converter (not shown in the figure) and a time controller (not shown in the figure). So set up, mutually support through converter and time controller and adjust the aeration rate for system dissolved oxygen maintains at comparatively stable scope, specifically, anoxic zone dissolved oxygen is below 0.5, and aerobic zone dissolved oxygen is between 0.5-1.0, makes anaerobism, oxygen deficiency and aerobic microorganism can coexist in the system simultaneously, realizes the high-efficient processing of waste water.

The primary sedimentation tank 1, the anaerobic tank 2, the first anoxic tank 3, the first aerobic tank 4, the second aerobic tank 5, the second anoxic tank 6, the third aerobic tank 7 and the final sedimentation tank 8 are distributed in a snake shape. So set up, adopt snakelike distribution overall arrangement, do benefit to and arrange in limited space, it is more reasonable to distribute.

The bottom of the primary sedimentation tank 1 and the bottom of the final sedimentation tank 8 are both provided with sludge calandria 15. So set up, utilize mud calandria 15 in time to drain away the mud of just sinking pond 1 and the 8 bottoms in final sedimentation pond, avoid piling up.

The working principle of the embodiment is as follows:

the high-concentration livestock and poultry breeding wastewater firstly enters the primary sedimentation tank 1, and after sedimentation, the suspended matters and pollutant content in the wastewater can be preliminarily reduced. The supernatant automatically flows into the anaerobic tank 2, the organic matters of macromolecules are decomposed and degraded, the load of subsequent treatment is reduced, the cutting aerator 1101 is also arranged, and the sludge and the wastewater are mixed by starting the cutting aerator 1101 to realize stirring. Then the wastewater enters a multi-stage AO process of alternatively carrying out anoxic and aerobic processes to realize the removal of organic matters and nitrogen in the wastewater. Wherein the anoxic tank is provided with a cutting aerator 1101 for stirring and pushing flow, and the aerobic tank is provided with a microporous aerator 1102 for supplying oxygen to aerobic microorganisms of the system. Anaerobic tank 2, good oxygen pond and oxygen deficiency pond all are provided with liftable lifting frame body 9 in the pond, and aeration equipment 11 sets up in the bottom of lifting frame body 9, and the fixed middle part that sets up at lifting frame body 9 that packs not only can play fixed microorganism and provide the carrier of load for it (packing module 10 promptly), also makes things convenient for aeration equipment 11 and packing module 10's inspection to change, has improved the stability and the operability of system. The mixed liquid in the biochemical tank finally enters a final sedimentation tank 8 for mud-water separation, and the supernatant and the residual sludge are automatically drained. So far, the sewage treatment process of the high-concentration livestock and poultry breeding wastewater is completed.

Claims

1. The utility model provides a multistage AO sewage treatment system for high concentration aquaculture waste water which characterized in that: comprises a primary sedimentation tank, an anaerobic tank, a first anoxic tank, a first aerobic tank, a second anoxic tank, a third aerobic tank and a final sedimentation tank which are connected in sequence; the first anoxic tank, the first aerobic tank, the second anoxic tank and the third aerobic tank are all internally provided with a liftable lifting frame body, the middle part of the lifting frame body is provided with a filling module, and the bottom of the lifting frame body is provided with a plurality of aeration devices; the aeration devices are detachably and hermetically connected with the main aeration pipe, and the air supply end of the main aeration pipe is connected with an aeration fan.

2. The multi-stage AO sewage treatment system for high concentration aquaculture wastewater of claim 1, wherein: and the sludge air stripping air pipe is also arranged, and two ends of the sludge air stripping air pipe are respectively connected with the bottom of the final sedimentation tank and the anaerobic tank.

3. The multi-stage AO sewage treatment system for high concentration aquaculture wastewater of claim 1, wherein: the aeration device is detachably and hermetically connected with the main aeration pipe through a movable joint.

4. The multi-stage AO sewage treatment system for high concentration aquaculture wastewater of claim 1, wherein: the aeration devices in the anaerobic tank, the first anoxic tank and the second anoxic tank are cutting aerators; the aeration devices positioned in the first aerobic tank, the second aerobic tank and the third aerobic tank are microporous aerators.

5. The multi-stage AO sewage treatment system for high concentration aquaculture wastewater of claim 1, wherein: and a frequency converter and a time controller are arranged at the aeration fan.

6. The multi-stage AO sewage treatment system for high concentration aquaculture wastewater of claim 1, wherein: the primary sedimentation tank, the anaerobic tank, the first anoxic tank, the first aerobic tank, the second anoxic tank, the third aerobic tank and the final sedimentation tank are distributed in a snake shape.

7. The multi-stage AO sewage treatment system for high concentration aquaculture wastewater of claim 1, wherein: and sludge discharge pipes are arranged at the bottoms of the primary sedimentation tank and the final sedimentation tank.