CN210193608U - Livestock and poultry breeding biogas slurry treatment system - Google Patents
Livestock and poultry breeding biogas slurry treatment system Download PDFInfo
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Abstract
The utility model discloses a natural pond liquid processing system is bred to beasts and birds, including coagulating sedimentation district, anaerobic zone, aerobic zone, anoxic zone, indisputable carbon microelectrolysis district and the degree of depth denitrogenation pond that the order communicates, be equipped with the water inlet on the coagulating sedimentation district, be equipped with the delivery port on the degree of depth denitrogenation pond. The livestock and poultry breeding biogas slurry treatment system provided by the utility model adds biochemical fillers in the anaerobic zone, the aerobic zone and the anoxic zone for biological reinforcement, thereby avoiding the loss of sludge and saving the sludge reflux; and the anaerobic zone is arranged at the front end of the aerobic zone, so that the dephosphorization efficiency can be improved, and the anoxic zone is arranged at the rear end of the aerobic zone, so that the nitrification is carried out before the denitrification, and the reflux of the nitrified liquid is avoided. The subsequent setting in biochemical district strengthens little electrolysis, has improved the getting rid of difficult degradation organic matter and colourity, and whole processing system simple structure, the operation is stable, and area is little, can reduce colourity, high-efficient ammonia nitrogen of getting rid of.
Description
Technical Field
The utility model belongs to the sewage treatment field especially relates to a natural pond liquid processing system is bred to beasts and birds.
Background
With the change of the livestock and poultry industry in the direction of intensification and scale mode in China and the common adoption of a water-washed manure cleaning mode, the livestock and poultry breeding wastewater has the characteristics of large water discharge, high pollution load and the like. The livestock and poultry breeding wastewater becomes the third pollution source after industrial wastewater and domestic sewage, not only contains high-concentration COD, N and P, but also generates a large amount of livestock and poultry excrement and urine which are polluted by feed heavy metal additives and veterinary drug residues, so that the problems of antibiotics, heavy metals and compound pollution thereof in the breeding wastewater are increasingly highlighted. Livestock and poultry breeding wastewater has various adverse effects on the environment, and if the livestock and poultry breeding wastewater is directly discharged without being treated or treated improperly, the livestock and poultry breeding wastewater can form great potential threats to human health.
The livestock and poultry manure sewage treatment process can be divided into the following 3 types on the whole: source control method, natural treatment and industrial treatment. The source control method is to reduce the nutrient substances such as nitrogen, phosphorus and the like in the feed while meeting the growth and production efficiency of the livestock and poultry, thereby improving the absorption and utilization rate of the livestock and poultry on the nutrition of the feed and achieving the purpose of reducing the discharge amount of the pollutant substances in the excrement and urine of the livestock and poultry. However, the source control method cannot fundamentally eliminate the influence of the livestock and poultry manure on the environment, and only can properly reduce the pollution degree of the livestock and poultry manure to the environment, and the source control method needs to be matched with a reasonable subsequent method for treating the livestock and poultry manure to effectively control the environmental pollution caused by the livestock and poultry manure. The natural treatment is a method for purifying livestock and poultry manure sewage by utilizing soil, natural water and organisms through comprehensive actions of physics, chemistry and biology, and mainly comprises the methods of returning field utilization, artificial wetland, oxidation pond and the like. The industrial treatment mode is to treat the livestock and poultry manure sewage by anaerobic treatment, aerobic treatment and other modes. The industrial treatment is a relatively good choice for some farms which are developed economically and suburbs in big cities and do not have enough farmland to consume livestock and poultry manure sewage. The industrial treatment methods generally used for treating livestock and poultry manure sewage include UASB, upflow solid anaerobic reactor (USR), nitrosation-anaerobic ammonia oxidation, Sequencing Batch Reactor (SBR), activated sludge process, and the like.
The coagulating sedimentation, the activated sludge process, the biological filtration technology and the anaerobic-aerobic combined process are common treatment methods for livestock and poultry breeding wastewater at present, and mainly remove most organic matters, suspended matters and N, P, but cannot effectively remove the wastewaterThe difficult degradation organic matter in aqueous, it is difficult to reach standard to go out chromaticity of water high, invest in being big simultaneously, the operation cost is too high, the marketing degree of difficulty is great. The prior treatment process mainly adopts a solid-liquid separation-anaerobic digestion-aerobic treatment combined process, although the CODCr and BOD of the wastewater can be effectively removed5And NH3N, but the chroma removal effect of the wastewater is not obvious, the chroma of the effluent of the secondary sedimentation tank is still very high after the livestock and poultry breeding wastewater is subjected to aerobic treatment, which reaches 500-2000 times (dilution multiple method), and the COD is generally 200-800mg/1, so that the deep decolorization effect cannot be achieved. Wang planting Sanet al (Wang planting Sanlian, Liao new Ling pig farm sewage decolorization and deodorization research [ J]Ecology science, 1993 (2): 113-116.) the bleaching agent has certain effect on the decolorization research of the wastewater of the farm, but the consumption of the agent is too large, and the secondary pollution is serious. Li et al (Li C J, Zhang Y, Yan LL, et al. study of piggy experience for treatment of piggy water by UASB-SBR [ C]// advanced materials research. trans Tech Publications, 2012, 356: 2047) and 2050) in a pilot scale test, the method has the advantages that partial organic matters and most of ammonia nitrogen in the pig raising wastewater can be effectively removed, the total phosphorus of the effluent exceeds the standard, the concentration of suspended matters in the wastewater is high, the quality of the effluent is influenced, an additional set of chemical coagulation reaction tank is required for treatment to meet the discharge standard, the hydraulic retention time of the wastewater in the SBR is long, the longer retention time greatly increases the occupied area of a wastewater treatment device, and the investment cost of a treatment project is further increased. Engineering example for treating pig breeding wastewater by using combined technology of UASB + A/O + Fenton [ J ] Haifeng et al (Jinhaifeng, 20319; Chenbo, Zhuyongjian, et al. ] -UASB + A/O + Fenton]Resource saving and environmental protection, 2015 (12): 54-55.) the UASB + A/O + Fenton combined process is used for treating the live pig breeding wastewater, the design retention time of the aerobic nitrification section of the A/O process is long, an advanced MBR process is adopted, the sludge concentration is greatly increased to 5-12 g/L, and the effluent quality is improved. Patent CN 105347443A, CN 105541014a discloses a method for treating livestock and poultry breeding wastewater, which mainly describes a method for removing organic matters (such as antibiotics) and heavy metals which are difficult to degrade in livestock and poultry breeding wastewater. CN 102491573A provides a method for improving the livestock and poultry raisingA method for degrading antibiotics and hormones in aquaculture wastewater; CN 102557295A discloses a method for removing antibiotics and hormones in livestock and poultry breeding wastewater, which adopts an ultrasonic treatment technology, and the ultrasonic treatment is carried out while aeration is carried out. Compared with the traditional methods such as biological treatment and the like, the method has the advantages of milder reaction conditions and short treatment time, and realizes the purpose of high-efficiency treatment. CN 204474509U discloses a treatment device that can advanced treatment beasts and birds breed waste water, makes COD, heavy metal, antibiotic, N, P, organic matter and pathogenic bacterium get rid of jointly. CN 105174624A discloses a treatment method of livestock and poultry breeding wastewater, which comprises precipitation treatment, composting treatment, heating treatment, anaerobic ammonia oxidation treatment, secondary precipitation treatment, separation and discharge. CN 106007201A discloses a livestock and poultry breeding wastewater treatment process, and provides a whole set of complete flow with good separation and removal effects on organic matters, nitrogen, phosphorus and the like in livestock and poultry breeding wastewater.
Generally speaking, the effluent quality of the high-concentration livestock and poultry breeding wastewater at present is difficult to reach the standard, particularly the ammonia nitrogen is difficult to reach the discharge standard, and the biological reaction is seriously influenced under the condition of the existence of the high-concentration ammonia nitrogen. In order to solve the existing problems, the development of a more effective livestock and poultry wastewater comprehensive treatment system is urgently needed.
SUMMERY OF THE UTILITY MODEL
The present application is directed to solving at least one of the problems in the prior art. Therefore, one of the purposes of the utility model is to provide a livestock and poultry breeding biogas slurry treatment system with good treatment effect.
In order to solve the technical problem, the following technical scheme is adopted in the application:
the livestock and poultry breeding biogas slurry treatment system comprises a coagulation sedimentation zone, an anaerobic zone, an aerobic zone, an anoxic zone, an iron-carbon micro-electrolysis zone and a deep denitrification tank which are sequentially communicated, wherein a water inlet is formed in the coagulation sedimentation zone, and a water outlet is formed in the deep denitrification tank.
Further, still include the box, the top and the bottom of box are equipped with the first baffle of polylith in turn, the polylith first baffle will separate in the box and establish ties in order coagulating sedimentation district, anaerobic zone, aerobic zone, anoxic zone, indisputable carbon micro-electrolysis district and degree of depth denitrogenation pond.
Furthermore, the sedimentation zone is separated into a mixing zone and a sedimentation zone which are communicated with each other at the bottoms through a second partition plate, a stirrer is arranged in the mixing zone, a transition zone is separated from the sedimentation zone through a third partition plate, and the top and the bottom of the transition zone are respectively communicated with the sedimentation zone and the anaerobic zone.
Furthermore, a disinfection tank connected with a water outlet of the deep denitrification tank is separated from the rear side of the deep denitrification tank in the box body through a fourth partition plate.
Furthermore, the deep denitrification tank is a deep denitrification filter tank or a deep denitrification V-shaped filter tank.
Furthermore, a water distribution plate is arranged at the lower part of the anaerobic zone.
Further, the aerobic zone is arranged in two stages.
Further, the iron-carbon micro-electrolysis area is filled with iron-carbon filler, an aeration device is arranged below the iron-carbon filler, and a dosing point is arranged above the iron-carbon filler.
Compared with the prior art, the utility model has the advantages of as follows:
the livestock and poultry breeding biogas slurry treatment system provided by the utility model adds biochemical fillers in the anaerobic zone, the aerobic zone and the anoxic zone for biological reinforcement, thereby avoiding the loss of sludge and saving the sludge reflux; and the anaerobic zone is arranged at the front end of the aerobic zone, so that the dephosphorization efficiency can be improved, and the anoxic zone is arranged at the rear end of the aerobic zone, so that the nitrification is carried out before the denitrification, and the reflux of the nitrified liquid is avoided. The subsequent setting in biochemical district strengthens little electrolysis, has improved the getting rid of difficult degradation organic matter and colourity, and whole processing system simple structure, the operation is stable, and area is little, can reduce colourity, high-efficient ammonia nitrogen of getting rid of.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
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. 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.
Referring to fig. 1, a livestock and poultry breeding biogas slurry treatment system, including coagulating sedimentation zone 1, anaerobic zone 2, aerobic zone 3, anoxic zone 4, little electrolysis zone 5 of iron carbon and degree of depth denitrogenation pond 6 that the order communicates, coagulating sedimentation zone 1 is equipped with water inlet 7, be equipped with the delivery port on the degree of depth denitrogenation pond 6, little electrolysis zone 5 of iron carbon is filled with iron carbon filler 8, all set up aeration equipment 9 in the below of iron carbon filler 8 and aerobic zone 3, be equipped with the dosing point (not shown in the figure) above little electrolysis zone 5 of iron carbon, anaerobic zone 2, aerobic zone 3 and anoxic zone 4 intussuseption are filled with biochemical filler 10, as for the concrete structure of aeration equipment 9 and biochemical filler 10 select to be prior art, no longer describe herein.
In the livestock and poultry breeding biogas slurry treatment system, the biochemical filler 10 is added into the anaerobic zone 2, the aerobic zone 3 and the anoxic zone 4 for biological enhancement, so that the loss of sludge is avoided, and the backflow of sludge is saved; and the anaerobic zone 2 is arranged at the front end of the aerobic zone 3, so that the dephosphorization efficiency can be improved, and the anoxic zone 4 is arranged at the rear end of the aerobic zone 3, so that the nitrification is carried out before denitrification, and the reflux of the nitrified liquid is avoided. The anaerobic zone 2, the aerobic zone 3 and the anoxic zone 4 are collectively referred to as biochemical zones in the industry, and the specific structures thereof are all known in the industry and are not described herein again. The subsequent setting in biochemical region strengthens little electrolysis region 5, has improved the getting rid of difficult degradation organic matter and colourity, and whole processing system simple structure operates stably, and area is little, can reduce colourity, high-efficient ammonia nitrogen of getting rid of.
Referring to fig. 1, in an embodiment, the treatment system of the embodiment further includes a box body 11, a plurality of first partition plates 12 are alternately arranged at the top and the bottom of the box body 11, the box body 11 is internally partitioned by the plurality of first partition plates 12 into a coagulation sedimentation zone 1, an anaerobic zone 2, an aerobic zone 3, an anoxic zone 4, an iron-carbon micro-electrolysis zone 5 and a deep denitrification tank 6 which are sequentially connected in series, a water outlet which is located behind the deep denitrification tank 6 in the box body 11 and is connected to a disinfection tank 14 through a fourth partition plate 13 is partitioned and is connected to the deep denitrification tank 6, and the treated biogas slurry disinfection tank 14 is subjected to disinfection treatment and then reaches the standard to be discharged. Coagulating sedimentation district 1, anaerobic zone 2, aerobic zone 3, anoxic zone 4, the little electrolysis zone of iron carbon 5, degree of depth denitrogenation pond 6 and disinfection pond 14 integration are in same box, and whole processing system area is little, and compact structure can also make whole processing system possess the function of removing the operation through set up the gyro wheel in bottom half.
Concretely, coagulating sedimentation district 1 separates mixed zone 101 and the settling zone 102 of bottom intercommunication through second baffle 15, is equipped with agitator 16 in the mixed zone 101, separates transition zone 18 through third baffle 17 in the settling zone 102, and the top and the bottom of transition zone 18 communicate with settling zone 102 and anaerobic zone 2 respectively, through setting up coagulating sedimentation district 1, can carry out coagulating sedimentation with a large amount of COD, the SS that the plant natural pond liquid contains and go out, improves follow-up biochemical treatment efficiency.
The effluent water of the livestock and poultry breeding wastewater treated by the treatment system of the embodiment can stably reach or even exceed the discharge standards of pollutants for livestock and poultry breeding (GB 18596-.
It is conceivable that in the actual design, the deep denitrification filter tank 6 can be a deep denitrification filter tank or a deep denitrification V-shaped filter tank, the aerobic zone 3 is provided with two stages of aerobic, the volume ratio of the first-stage aerobic zone 301 to the second-stage aerobic zone 302 is more than 2: 1, and a water distribution plate (not shown in the figure) can be arranged at the lower part of the anaerobic zone 2 to prevent the disturbance of the excessive water inflow to the anaerobic zone 2 from being uneven.
The working process of the treatment system for treating the biogas slurry in the farm is as follows: firstly, after biogas slurry in a farm enters a mixing zone 101 from a water inlet 7 of the mixing zone 101, the biogas slurry is uniformly mixed and stirred by a stirrer 15 and then enters a settling zone 102 from the bottom of the mixing zone 101, a large amount of COD and SS contained in the biogas slurry in the farm are coagulated and settled in the settling zone 102, so that the subsequent biochemical treatment efficiency can be improved, wastewater after coagulating sedimentation enters an anaerobic zone 2 from the bottom of the anaerobic zone 2 through a transition zone 18, phosphate is directly released and then enters an aerobic zone 3 by utilizing the metabolic action of anaerobic microorganisms in the anaerobic zone 2, and a large amount of phosphate is absorbed in the aerobic zone due to the hunger effectCollecting phosphorus in the wastewater to remove the phosphorus; and ammonia nitrogen in the wastewater is oxidized into NO under the condition of sufficient oxygen supply3 -、NO2 -Then enters an anoxic zone 4, and the denitrifying bacteria in the anoxic zone 4 convert nitrate nitrogen into N2Removing, because the livestock and poultry breeding biogas slurry contains a part of refractory organic matters and is difficult to remove by biochemical treatment, a strengthened iron-carbon micro-electrolysis area 5 is arranged after biochemical treatment, and H is added at a medicine adding point at the upper part of the strengthened iron-carbon micro-electrolysis area 52O2The wastewater after biochemical treatment enters a reinforced iron-carbon micro-electrolysis region 5 from the bottom, the sewage becomes clear, and macromolecular organic matters are converted into micromolecular organic matters; then enters a deep denitrification V-shaped filter, degraded organic matters are used as carbon sources, the treatment efficiency of the organic matters, ammonia nitrogen, SS and chromaticity is further improved, and finally the organic matters are disinfected in a disinfection tank 14 and then discharged after reaching the standard.
In order to verify the feasibility of the process, the biogas slurry in a certain pig farm in Ningxiang of Hunan province is taken for experiments, the removal rate of each treatment unit is shown in Table 1, and the effluent can stably reach and exceed the discharge standard of pollutants for livestock and poultry breeding industry (GB 18596-.
The above examples are merely illustrative of the present invention clearly and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. Nor is it intended to be exhaustive of all embodiments. And obvious changes and modifications may be made without departing from the scope of the present invention.
Claims (8)
1. The utility model provides a beasts and birds breed natural pond liquid processing system which characterized in that: the device comprises a coagulating sedimentation zone, an anaerobic zone, an aerobic zone, an anoxic zone, an iron-carbon micro-electrolysis zone and a deep denitrification tank which are sequentially communicated, wherein a water inlet is formed in the coagulating sedimentation zone, and a water outlet is formed in the deep denitrification tank.
2. The livestock and poultry breeding biogas slurry treatment system according to claim 1, characterized in that: still include the box, the top and the bottom of box are equipped with the first baffle of polylith in turn, the polylith first baffle will separate in the box and establish ties in order coagulating sedimentation district, anaerobic zone, aerobic zone, anoxic zone, indisputable carbon micro-electrolysis district and degree of depth denitrogenation pond.
3. The processing system of claim 2, wherein: the sedimentation zone is divided into a mixing zone and a sedimentation zone by a second partition plate, the bottoms of the mixing zone and the sedimentation zone are communicated, a stirrer is arranged in the mixing zone, a transition zone is divided in the sedimentation zone by a third partition plate, and the top and the bottom of the transition zone are respectively communicated with the sedimentation zone and the anaerobic zone.
4. A processing system according to claim 2 or 3, characterized in that: and a disinfection tank which is arranged at the rear part of the deep denitrification tank in the box body and is connected with a water outlet of the deep denitrification tank is separated by a fourth partition plate.
5. A processing system according to claim 2 or 3, characterized in that: the deep denitrification tank is a deep denitrification filter tank or a deep denitrification V-shaped filter tank.
6. A processing system according to claim 2 or 3, characterized in that: the lower part of the anaerobic zone is provided with a water distribution plate.
7. A processing system according to claim 2 or 3, characterized in that: the aerobic zone is arranged in two stages.
8. A processing system according to claim 2 or 3, characterized in that: the iron-carbon micro-electrolysis area is filled with iron-carbon filler, an aeration device is arranged below the iron-carbon filler, and a dosing point is arranged above the iron-carbon filler.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116514345A (en) * | 2023-06-13 | 2023-08-01 | 西安东方宏业科技股份有限公司 | Domestic sewage treatment device and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116514345A (en) * | 2023-06-13 | 2023-08-01 | 西安东方宏业科技股份有限公司 | Domestic sewage treatment device and method |
| CN116514345B (en) * | 2023-06-13 | 2023-12-01 | 西安东方宏业科技股份有限公司 | Domestic sewage treatment device and method |
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Address after: 410100 R&D Building, No. 59 Nanzhuyuan Road, Changsha Economic and Technological Development Zone, Changsha City, Hunan Province, 4th Floor Patentee after: Changsha Industrial Research Institute Environmental Protection Co.,Ltd. Address before: 410100 R&D Building, No. 59 Nanzhuyuan Road, Changsha Economic and Technological Development Zone, Changsha City, Hunan Province, 4th Floor Patentee before: CHANGSHA KAITIAN INDUSTRIAL RESEARCH INSTITUTE ENVIRONMENTAL PROTECTION SERVICE Co.,Ltd. |