CN214400179U

CN214400179U - Livestock and poultry breeding wastewater treatment system

Info

Publication number: CN214400179U
Application number: CN202120646023.5U
Authority: CN
Inventors: 陈贤文; 黄长在; 韩志刚
Original assignee: Fuzhou Gongchuang Environmental Protection Technology Co ltd
Current assignee: Fuzhou Gongchuang Environmental Protection Technology Co ltd
Priority date: 2021-03-30
Filing date: 2021-03-30
Publication date: 2021-10-15
Anticipated expiration: 2031-03-30

Abstract

The utility model provides a livestock and poultry breeding wastewater treatment system, which comprises a grid canal, a sewage collecting tank, a sewage collecting adjusting tank, a flocculation tank I, a primary sedimentation tank, an AF anaerobic tank, a biogas slurry collecting adjusting tank, a flocculation tank II, a middle sedimentation tank, a two-stage AO treatment system, a secondary sedimentation tank I, an ozone contact tank, a transition tank, a three-stage AO treatment system, a secondary sedimentation tank II, an intermediate tank, an ozone reaction tank, a coagulating sedimentation tank and an ozone contact decoloration tank which are connected in sequence; the sewage collecting tank and the sewage collecting adjusting tank are connected through a solid-liquid separator. The utility model relates to a wastewater treatment system is bred to beasts and birds solves and takes off single dephosphorization not enough in the current wastewater treatment process of breeding, and difficult degradation organic matter degradation is efficient, the unstable problem of system's play water.

Description

Livestock and poultry breeding wastewater treatment system

Technical Field

The utility model relates to a relate to the environmental protection field particularly, relate to a livestock and poultry breeding wastewater treatment field.

Background

Along with the economic development and the increasing of the culture amount, the culture pollution is more and more serious, and meanwhile, the environmental protection requirement is higher and higher. The aquaculture wastewater has 3 high characteristics, namely high COD, high SS and high NH3-N, the wastewater discharged to the natural environment causes serious water eutrophication to cause serious pollution, and the conventional anaerobic and nitrogen and phosphorus removal aerobic process generally adopts an AO or SBR method to remove nitrogen and phosphorus and cannot meet the requirements.

Disclosure of Invention

The to-be-solved technical problem of the utility model lies in providing a livestock and poultry breeding wastewater treatment system, it is not enough to take off single dephosphorization in solving current breeding wastewater treatment process, and degradation of refractory organics is inefficient, the unstable problem of system's play water.

The utility model discloses a realize like this: a livestock and poultry breeding wastewater treatment system comprises a grid channel, a sewage collecting pool, a sewage collecting adjusting pool, a flocculation pool I, a primary sedimentation pool, an AF anaerobic pool, a biogas slurry collecting adjusting pool, a flocculation pool II, a middle sedimentation pool, a two-stage AO treatment system, a secondary sedimentation pool I, an ozone contact pool, a transition pool, a three-stage AO treatment system, a secondary sedimentation pool II, an intermediate pool, an ozone reaction pool, a coagulating sedimentation pool and an ozone contact decoloration pool which are connected in sequence; the sewage collecting tank and the sewage collecting adjusting tank are connected through a solid-liquid separator.

Further, the two-stage AO treatment system comprises a first-stage anoxic tank, a first-stage contact oxidation tank, a second-stage anoxic tank and a second-stage contact oxidation tank which are connected in sequence; the three-stage AO treatment system is formed by connecting a three-stage anoxic tank and a three-stage contact oxidation tank.

Furthermore, liftable tubular microporous aerators are arranged in the primary contact oxidation tank, the secondary contact oxidation tank and the tertiary contact oxidation tank.

Furthermore, all install in the dirty pond of collection, the dirty equalizing basin of collection and the natural pond liquid collection equalizing basin and prevent stifled air mixing pipe, sewage elevator pump and liquid level probe meter.

Further, the ozone titanium plate aeration discs are arranged at the bottoms of the ozone contact tank, the ozone reaction tank and the ozone disinfection and decoloration tank.

The utility model has the advantages that: organic ammonia nitrogen can be effectively removed by designing a two-stage AO treatment system; under the action of ozone in the ozone contact tank, organic matters which are difficult to degrade are further converted into organic matters which are easy to degrade, and the biodegradability of sewage is improved; organic ammonia nitrogen is further removed through a three-stage AO treatment system; through being equipped with the coagulating sedimentation pond, make phosphorus in the sewage obtain more effective getting rid of, make remaining organic matter further treatment in the sewage, the ammonia nitrogen gets rid of more thoroughly, and the system goes out water more stable.

Drawings

The invention will be further described with reference to the following examples with reference to the accompanying drawings.

FIG. 1 is a block diagram of a livestock and poultry breeding wastewater treatment system of the utility model.

The device comprises a grid channel 1, a sewage collecting tank 2, a solid-liquid separator 3, a sewage collecting adjusting tank 4, a flocculation tank I5, a primary sedimentation tank 6, an AF anaerobic tank 7, a biogas slurry collecting adjusting tank 8, a flocculation tank II 9, a middle sedimentation tank 10, a two-stage AO treatment system 11, a first-stage anoxic tank 111, a first-stage contact oxidation tank 112, a second-stage anoxic tank 113, a second-stage contact oxidation tank 114, a second sedimentation tank I12, an ozone contact tank 13, a transition tank 14, a three-stage AO treatment system 15, a three-stage anoxic tank 151, a three-stage contact oxidation tank 152, a second sedimentation tank II 16, an intermediate tank 17, an ozone reaction tank 18, a coagulation sedimentation tank 19 and an ozone contact decoloration tank 20.

Detailed Description

The embodiment of the utility model provides a livestock and poultry breeding wastewater treatment system solves and takes off singly not enough dephosphorization among the current waste water treatment process of breeding, and degradation of difficult degradation organic matter is inefficient, the unstable problem of system's play water.

The embodiment of the utility model provides an in technical scheme for solving above-mentioned problem, the general thinking is as follows: organic ammonia nitrogen can be effectively removed by designing a two-stage AO treatment system; under the action of ozone in the ozone contact tank, organic matters which are difficult to degrade are further converted into organic matters which are easy to degrade, and the biodegradability of sewage is improved; organic ammonia nitrogen is further removed through a three-stage AO treatment system; through being equipped with the coagulating sedimentation pond, make phosphorus in the sewage obtain more effective getting rid of, make remaining organic matter further treatment in the sewage, the ammonia nitrogen gets rid of more thoroughly, and the system goes out water more stable.

For better understanding of the above technical solutions, the following detailed descriptions will be provided in conjunction with the drawings and the detailed description of the embodiments.

Referring to fig. 1, the utility model relates to a livestock and poultry breeding wastewater treatment system, which comprises a grid channel 1, a sewage collecting tank 2, a solid-liquid separator 3, a sewage collecting adjusting tank 4, a flocculation tank I5, a primary sedimentation tank 6, an AF anaerobic tank 7, a biogas slurry collecting adjusting tank 8, a flocculation tank II 9, a middle sedimentation tank 10, a two-stage AO treatment system 11, a secondary sedimentation tank I12, an ozone contact tank 13, a transition tank 14, a three-stage AO treatment system 15, a secondary sedimentation tank II 16, a middle tank 17, an ozone reaction tank 18, a coagulation sedimentation tank 19 and an ozone contact decoloration tank 20 which are connected in sequence; the two-stage AO treatment system 11 comprises a first-stage anoxic tank 111, a first-stage contact oxidation tank 112, a second-stage anoxic tank 113 and a second-stage contact oxidation tank 114 which are connected in sequence; the three-stage AO treatment system 15 is formed by connecting a three-stage anoxic tank 151 and a three-stage contact oxidation tank 152, and the sewage collecting tank 2 and the sewage collecting regulating tank 4 are connected through a solid-liquid separator 3. The primary contact oxidation pond 112, the secondary contact oxidation pond 114 and the tertiary contact oxidation pond 152 are internally provided with liftable pipe type microporous aerators. Anti-blocking air stirring pipes, sewage lifting pumps and liquid level probe meters are arranged in the sewage collecting tank 2, the sewage collecting adjusting tank 4 and the biogas slurry collecting adjusting tank 8. And the bottoms of the ozone contact tank, the ozone reaction tank and the ozone disinfection and decoloration tank are all provided with an ozone titanium plate aeration disc.

The wastewater treatment method comprises the following steps: the waste water enters a grid channel 1 through a pipe channel and mainly intercepts large-particle impurities such as injectors, placenta, plastic bags, pig hair and the like in the pig farm excrement and sewage; the sewage flows into a sewage collection pool 2 through a grid channel 1 and is used for adjusting water quality and water quantity, an anti-blocking air stirring pipe, a sewage lifting pump and a liquid level probe meter are installed in the sewage collection pool 2, the sewage is lifted by the sewage lifting pump and enters the solid-liquid separator 3 for treatment, the solid-liquid separator 20 is mainly used for removing a large amount of large-particle pollutants such as excrement slag in the excrement sewage, the pollutant reduction is realized to reduce the treatment load of a subsequent biochemical treatment system, simultaneously, the water pump and the pipeline of the subsequent treatment system are prevented from being blocked, and the separated excrement slag enters an excrement slag piling shed and is sent to a composting field for treatment; the sewage flows into the sewage collecting and adjusting tank 4 for adjusting the water quality and the water quantity and reducing the impact load on subsequent treatment facilities due to the change of the water quality and the water quantity. An air stirring pipe, a sewage lifting pump and a liquid level probe are arranged in the sewage collecting adjusting tank 4; sewage enters a flocculation tank I5 through a sewage lifting pump, is removed in a primary sedimentation tank 6 after being added with chemicals in the flocculation tank I5, is further reduced in the primary sedimentation tank 6, and reduces the treatment load of subsequent treatment facilities; sewage is discharged to an AF anaerobic tank 7 by gravity, combined fillers are installed in the AF anaerobic tank 7, a biogas slurry reflux pump is arranged in the AF anaerobic tank 7, organic matters in the wastewater can be degraded under the condition of no energy consumption under the combined action of microorganisms such as hydrolytic bacteria, acid-producing bacteria and methanogenic bacteria in the AF anaerobic tank 7, macromolecular pollutants can be decomposed into micromolecular intermediates, and substances which are difficult to be biochemically degraded are converted into substances which are easy to be biochemically degraded, so that the biodegradability of the wastewater is improved, and meanwhile, biogas is generated in the process of degrading the organic matters by the methanogenic bacteria; sewage flows into a biogas slurry collecting and adjusting tank 8 by gravity and is used for adjusting water quality and water quantity, an anti-blocking air stirring pipe, a sewage lifting pump and a liquid level probe meter are arranged in the tank, and the sewage is lifted by the sewage lifting pump and enters a flocculation tank II 9 for treatment; after the second flocculation tank 9 is filled with chemicals, the chemicals are further reduced in the intermediate sedimentation tank 10, so that the treatment load of subsequent treatment facilities is reduced; the sewage flows into a two-stage AO treatment system 11 and flows through a first-stage anoxic tank 111, a first-stage contact oxidation tank 112, a second-stage anoxic tank 113 and a second-stage contact oxidation tank 114 respectively, wherein a combined filler and a liftable tubular microporous aerator are arranged in the first-stage contact oxidation tank 112 and the second-stage contact oxidation tank 114, and the combined filler and the liftable tubular microporous aerator play roles in supplying oxygen and stirring at the same time through blast aeration, so that the activity of aerobic bacteria and the sludge-water mixing effect are ensured, organic matters in the water are promoted to be fully degraded and removed, and ammonia nitrogen in the sewage is converted into nitrate nitrogen through the nitrification function of nitrifying bacteria; meanwhile, phosphate accumulating bacteria in the activated sludge excessively absorb phosphate in the sewage, accumulate the phosphate in the body in the form of phosphorus accumulation, discharge the phosphate in the primary sedimentation tank 12 of the secondary sedimentation tank and discharge the phosphate in the sewage treatment system by using excess sludge, carry out mud-water separation on the effluent of the two-stage AO treatment system 11 in the primary sedimentation tank 12, return the separated activated sludge to the water inlet end of the primary anoxic tank 111, and discharge the excess sludge to the sludge treatment system; the effluent flows into the ozone contact tank 13, according to the characteristic that the aquaculture sewage is difficult to treat, the aquaculture sewage is soaked in the excrement soaking ditch for a long time and subjected to early anaerobic and aerobic biochemical treatment in a sewage treatment facility, and the effluent of the two-stage AO treatment system 11 still contains a large amount of macromolecular pollutants difficult to biodegrade; the bottom of the ozone contact tank 13 is provided with an ozone titanium plate aeration disc, and ozone is introduced into the ozone contact tank 13, so that the molecular bonds of macromolecular organic matters are broken by the non-degradable substances under the action of the ozone and other high-activity molecules, and the non-degradable substances are converted into easily biodegradable micromolecular organic matters, thereby improving the biodegradability of sewage and being beneficial to the subsequent further biochemical treatment and purification; the effluent flows into a transition tank 14, so that the residual ozone in the effluent of the ozone contact tank 13 is further oxidized and decomposed in the tank to consume pollutants in the sewage, and the residual ozone in the sewage is prevented from influencing the sludge activity of a subsequent three-stage AO treatment system 15; the sewage enters a three-level AO treatment system 15 and flows through a three-level anoxic tank 151 and a three-level contact oxidation tank 152 respectively, a combined filler and a liftable tubular microporous aerator are installed in the three-level contact oxidation tank 152, oxygen supply and stirring effects are achieved simultaneously through blast aeration, the mixed contact effect of aerobic bacteria activity and sludge water is guaranteed, organic matters in the water are fully degraded and removed, ammonia nitrogen in the sewage is further nitrified through the nitrification effect of nitrifying bacteria, the effluent enters a secondary sedimentation tank II 16 for sludge-water separation, the separated activated sludge flows back to the three-level anoxic tank 151, and the residual sludge is discharged to a sludge treatment system; sewage flows into an intermediate tank 17, a sewage lifting pump is arranged in the intermediate tank 17, the sewage enters an ozone reaction tank 18 through the sewage lifting pump, an ozone titanium plate aeration disc is arranged at the bottom of the ozone reaction tank 18, and residual difficultly-degradable substances are oxidized and decomposed under the action of ozone and other high-activity molecules by introducing ozone into the ozone reaction tank 18; meanwhile, powdered activated carbon is added into the tank, various pollutants in the sewage can be effectively adsorbed and removed through the mixed contact of the powdered activated carbon and the sewage, in addition, the activated carbon can play a catalytic oxidation role on ozone, the ozone oxidation efficiency and effect are improved, and the sewage decoloration role is played; sewage flows into a coagulating sedimentation tank 19 for mud-water separation, phosphorus is removed at the same time, finally the sewage flows into an ozone disinfection and decoloration tank 20, an ozone titanium plate aeration disc is installed at the bottom of the ozone disinfection and decoloration tank 20, ozone is introduced into the tank, and most pathogenic microorganisms (such as ascarid eggs and escherichia coli) in the sewage can be killed by mixing and contacting the ozone and the sewage, so that the harm of water quality infectious diseases is prevented, the sewage is deeply decolored, and finally the effluent is comprehensively utilized.

Although specific embodiments of the present invention have been described, it will be understood by those skilled in the art that the specific embodiments described are illustrative only and are not limiting upon the scope of the invention, and that equivalent modifications and variations can be made by those skilled in the art without departing from the spirit of the invention, which is to be limited only by the claims appended hereto.

Claims

1. The utility model provides a livestock and poultry breeding effluent disposal system which characterized in that: the device comprises a grid channel, a sewage collecting tank, a sewage collecting adjusting tank, a flocculation tank I, a primary sedimentation tank, an AF anaerobic tank, a biogas slurry collecting adjusting tank, a flocculation tank II, a middle sedimentation tank, a two-stage AO treatment system, a secondary sedimentation tank I, an ozone contact tank, a transition tank, a three-stage AO treatment system, a secondary sedimentation tank II, an intermediate tank, an ozone reaction tank, a coagulating sedimentation tank and an ozone contact decoloration tank which are connected in sequence; the sewage collecting tank and the sewage collecting adjusting tank are connected through a solid-liquid separator.

2. The livestock and poultry breeding wastewater treatment system of claim 1, wherein: the two-stage AO treatment system comprises a first-stage anoxic tank, a first-stage contact oxidation tank, a second-stage anoxic tank and a second-stage contact oxidation tank which are sequentially connected; the three-stage AO treatment system is formed by connecting a three-stage anoxic tank and a three-stage contact oxidation tank.

3. The livestock and poultry breeding wastewater treatment system of claim 2, wherein: the primary contact oxidation tank, the secondary contact oxidation tank and the tertiary contact oxidation tank are internally provided with liftable tubular microporous aerators.

4. The livestock and poultry breeding wastewater treatment system of claim 1, wherein: and an anti-blocking air stirring pipe, a sewage lifting pump and a liquid level probe meter are arranged in the sewage collecting tank, the sewage collecting adjusting tank and the biogas slurry collecting adjusting tank.

5. The livestock and poultry breeding wastewater treatment system of claim 1, wherein: and the bottoms of the ozone contact tank, the ozone reaction tank and the ozone disinfection and decoloration tank are all provided with an ozone titanium plate aeration disc.