CN105541057A - Resource utilization method for pig farm biogas slurry - Google Patents
Resource utilization method for pig farm biogas slurry Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/105—Phosphorus compounds
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
- C02F3/348—Biological treatment of water, waste water, or sewage characterised by the microorganisms used characterised by the way or the form in which the microorganisms are added or dosed
Abstract
The invention relates to a resource utilization method for pig farm biogas slurry. Fermented biogas slurry of a pig farm is sequentially subjected to links as follows: multi-stage aeration and filtration, inoculation and culture of photosynthetic bacteria, inoculation of cladoceran filter-feeding photosynthetic bacteria, collection of cladocerans, filtrate inoculation and culture of unicellular algae, inoculation of cladoceran filter-feeding unicellular algae, collection and treatment of the cladocerans, and recycling or emission of water up to the standard. In the treatment process, the photosynthetic bacteria are utilized to degrade organic matters in the biogas slurry and generate thalli firstly, then nutritive salts containing nitrogen, phosphorus and the like in water are absorbed by microalgae to generate algae, and eventually, the cladocerans are utilized for filter-feeding thalli and algae in the water in a non-selective manner. According to the resource utilization method for the pig farm biogas slurry, the photosynthetic bacteria, the unicellular algae and the cladocerans generated in the biogas slurry treatment process can be used for aquaculture and bait, and resource utilization of contaminants in the biogas slurry is achieved by the aid of the food chain; the method has the characteristics of low investment and energy consumption and capability of producing apparent economic and ecological benefits.
Description
Technical field
The present invention relates to natural pond, pig farm liquid processing technology field, specifically, is the method for natural pond, a kind of pig farm liquid recycling.
Background technology
Along with the growth of population, the raising of living standards of the people and socioeconomic fast development, the demand of the mankind to animal protein also progressively improves.Solve the shortage of human animal's property albumen crucial by cultivation, development livestock and poultry and aquaculture are the important measures solving animal protein shortage.The waste gas produced in scale animal and poultry cultivation process, waste liquid and waste residue, often cause very large pressure to the ecological environmental protection of periphery.Breeding pollution has become the main source of agriculture rural environmental pollution.Aquaculture wastewater and fluid bodily thing are the difficult points of intensive livestock and poultry farms pollutent harmless treatment, and its principal pollutant are organism, nitrogen and phosphorus.The sewage of current livestock and poultry farms in scale adopts methane-generating pit anaerobically fermenting process (livestock and poultry breeding industry waste treatment project technical specifications) usually, but still contains the nutritive salt such as the nitrogen phosphorus of high density in the natural pond liquid of the enormous amount produced.For pig breeding farm, the Pollutant levels of its aquaculture wastewater after the process of methane-generating pit anaerobically fermenting in the liquid of natural pond are still very high, BOD
5, ammonia nitrogen and total phosphorus concentration respectively up to 389mg/L, 578.5mg/L and 32.9mg/L, with national livestock and poultry breeding industry pollutant emission standard (DB33/593-2005; GB/T18596-2001) very large distance (BOD in intensive livestock and poultry cultivation sewage in standard is still had
5, total nitrogen and total phosphorus the average daily emission concentration of the highest permission be respectively 150mg/L, 80mg/L and 8mg/L).By in line to water body for the natural pond liquid produced, natural water serious eutrophication will certainly be caused.Therefore, natural pond liquid still needs secondary treatment.Livestock and poultry farm natural pond liquid has two kinds of conventional tupes, and one is " qualified discharge " pattern, and one is " comprehensive utilization " pattern (" livestock and poultry farms in scale biogas engineering design discipline " (NY/T1168)).Under qualified discharge pattern, waste water of livestock poultry after Anaerobic Digestion, must again through suitable aerobic treatment or naturally process etc., reach regulation environmental protection standard discharge or reuse.The construction costs of this pattern and running cost are all relatively high, and are non-resource Land use models." comprehensive utilization " pattern natural pond liquid is entered farmland to rely on the mode that naturally absorbs of farm crop to carry out, and is the recycling pattern of poor efficiency.Such processing mode is along with socioeconomic development, and its drawback day by day manifests: one is treatment effect is difficult to ensure by the impact of crop growing season; Two is that the acceleration of the adjustment of agricultural structure and urbanization exploitation make the to dissolve arable land of natural pond liquid is not enough, therefore, adopts other advanced treatment that more efficient way carries out natural pond liquid to seem particularly necessary.How to purify natural pond liquid, more and more become the restraining factors of livestock and poultry farms in scale Sustainable Production.
Photosynthetic bacterium (PhotosyntheticBacteria, be called for short PSB) be the earth occurs the earliest, occurring in nature ubiquity, there are the prokaryotic organism of original luminous energy synthetic system, it is the general name of under anaerobic not putting the photosynthetic bacterium of oxygen, can light as the energy, the organism of occurring in nature can be utilized under anaerobism illumination or aerobic dark condition, sulfide, ammonia etc. carry out photosynthetic microorganism as hydrogen donor carbon source of holding concurrently, play a significant role in natural material scavenging process, especially to the organism successful in degraded water body, play the effect purified water.
Micro-algae is biological as the low photoautotrophy type that waits of a class, abundant species.Microalgae cell can be the energy with luminous energy, absorbs the nutritive substances such as nitre nitrogen, ammonia nitrogen and phosphoric acid salt for the synthesis of cellular component from water body.Existing experimental study shows, different microalgae is different with Utilization ability to the tolerance of the nutritive salt such as nitrogen multi-form in water body, phosphorus, absorption.Purify waste water utilizing micro-algae put into practice in, nineteen fifty-seven, Oswald etc. using the biosystem of micro-algae as a kind of active sludge replaced in sewage disposal, have established the basis of algae dirty water living creature processing technique first.After this, people more and more pay attention to the application that bacterium combines with algae, and the oxidation pond technology be based upon on artificial mode water body alga-bacterium symbiosis self-cleaning basis is widely used and develops.The research that micro-algae high value added product that livestock and poultry sewage purification is coupled in recent years is produced also has report, mainly concentrates on the field utilizing livestock and poultry sewage to carry out microalgae biodiesel production.Hu Hongying etc. (2009) inquired into based on microalgae cell cultivate profound purification and high value biomass produce coupling technique.Initiative micro-algae sewage disposal and microalgae biodiesel being produced of Sydney etc. (2010) is coupled.Hu Hongying and Li Xin (2010) analyzes the gordian technique and Potentials that utilize sewage resource production microalgae biodiesel.
Cladocera, be under the jurisdiction of Arthropoda, Crustachia, Branchiopoda, the small-sized crustaceans of peg graft, is distributed widely in fresh water, seawater and inland brackish water, it is the high-quality natural bait of aquatic animal, some kind wherein has stronger resistance to soiling, can organic debris in non-selective filter drinking water body, be frustule and bacterium, thus the small nutritive substance being difficult in water body gather is transformed into the bait that small-particle easily gathers
In sum, develop reusable edible, sewage disposal technology that is efficient, low cost is the important measures of scale animal and poultry cultivation Sustainable development.Animal waste is fully utilized, turns waste into wealth, be reduce animal waste arbitrarily to discharge, fundamentally crack the fundamental solution that Pollution from livestock and poultry prevents and treats a difficult problem.
Summary of the invention
The object of the invention is for deficiency of the prior art, the method for natural pond, a kind of pig farm liquid recycling is provided, and yet there are no report about the method for natural pond, this pig farm liquid recycling.
For achieving the above object, the technical scheme that the present invention takes is:
The method of natural pond, a kind of pig farm liquid recycling, it is characterized in that, namely the fermentation biogas liquid flowed out in digester of pig farm filters through multi-stage aeration successively, inoculation photosynthetic bacterium is also cultivated, inoculation cladocera filter food photosynthetic bacterium also collects cladocera, filtrate inoculation unicellular algae is also cultivated, inoculation cladocera filter food single-cell algae also collects cladocera and the link such as the rear water discharge up to standard of process or reuse, first utilize the organism in the liquid of photosynthetic bacterium degraded natural pond in treating processes and generate thalline, micro-algae is utilized to absorb the nutritive salt such as nitrogen phosphorus in natural pond liquid and generate frustule afterwards, the organic debris formed in recycling cladocera non-selective filter food treating processes, photosynthetic bacterium and unicellular algae, the cladocera produced, photosynthetic bacterium, unicellular algae can be used for aquaculture or bait, thus realize the recycling of pollution substance in the liquid of natural pond.
Further, first the fermentation biogas liquid flowed out in digester of pig farm filter through multi-stage aeration, the stainless steel mesh specification that the multi-stage aeration adopted filters is followed successively by 200 orders, 300 orders, 400 orders and 500 orders, screen cloth tilts at an angle, in screen bottom, nanometer aeration pipe is installed, by the part ammonia-nitrogen desorption in the liquid of natural pond under the effect of aeration, prevents sieve mesh from blocking simultaneously.
Further, photosynthetic bacterium is inoculated with degraded and absorption organism in the natural pond liquid that multi-stage aeration filters, the bacterial classification of photosynthetic bacterium is Rhodopseudomonas Rhodopseudomonas, rhodospirillum Rhodospirillum and red bacterium belong to the kind of Rhodobacter, the ratio that the initial inoculum of photosynthetic bacterium and multi-stage aeration filter natural pond liquid is 3:7 ~ 5:5, carry out cultivation in 5 ~ 10 days in transparent synthetic glass post or column flexible plastic film bag after, maintain certain natural pond liquid to flow into and photosynthetic bacteria liquid take-off rate implementation cultured continuously, the speed of inflow and outflow adjusts according to photosynthetic bacterium growth situation.
Further, a cultured photosynthetic bacterium part can directly be gathered for aquaculture production as required, after the photosynthetic bacteria liquid that another part flows out enters square cultivation tank, inoculation cladocera, utilize the organic debris in the non-selective filter Shiqi of cladocera and photosynthetic bacterium, thus the organic and particles of inorganic material in removal water body, promote water transparency, the kind of the cladocera inoculated is seemingly close naked abdomen flea Moinaaffinis, the Daphnia magna Daphniamagna of flea genus and the trunk flea Bosminalongirostris of trunk flea genus that naked abdomen flea belongs to.
Further, the cladocera cultivated is by filtering recovering device enrichment, and the cladocera of enrichment can be used as the living bait of aquatic animal seedling or aquarium fish, also capable of circulation for filtering food unicellular algae.
Further, the natural pond liquid of food is once filtered through cladocera, inoculation unicellular algae is to absorb the nutritive salt such as nitrogen phosphorus in water body, the algae kind of unicellular algae is Chlorella Chlorella, egg capsule Trentepohlia Oocystis, the kind of Chlorococcum Chlorococcum and Scenedesmus Scenedesmus, single celled initial inoculum is 1:1 ~ 5 with the ratio of once filtering the natural pond liquid of food through cladocera, carry out 5 ~ 10 days air-charging incubation in transparent synthetic glass post or column flexible plastic film bag after, maintain certain natural pond liquid to flow into and single-cell algae liquid take-off rate implementation cultured continuously, the speed of inflow and outflow adjusts according to the content of single cells grown situation and Water phosphorus.
Further, a cultured algae liquid part can directly be gathered for aquaculture production as required, after the algae liquid that another part flows out enters square cultivation tank, inoculation cladocera, utilize the organic debris in cladocera nonselective filter food characteristic secondary filter Shiqi and unicellular algae, further purifying water body, the kind of the cladocera inoculated is seemingly close naked abdomen flea Moinaaffinis, the Daphnia magna Daphniamagna of flea genus and the trunk flea Bosminalongirostris of trunk flea genus that naked abdomen flea belongs to.
Further, through the natural pond liquid of cladocera secondary filter food, after meeting livestock and poultry cultivation sewage drainage standard after testing, can carry out processing water up to standard discharge or reuse and rush liquid dung as pig house, not reach emission standard if detect, carry out re-treatment.
The invention has the advantages that:
1, the photosynthetic bacterium generated in the liquid treating processes of natural pond, unicellular algae and cladocera can be used for aquaculture and bait by natural pond, pig farm of the present invention liquid resource utilization method, by food chain, the pollution substance in the liquid of natural pond is realized recycling, have drop into low, energy consumption is low, can produce the feature of obvious economy and ecological benefits;
2, traditional wastewater treatment engineering can only cut down the quantity discharged of pollutent and discharge intensity, and usual rare product output, can only produce environment, ecology and social benefit, is difficult to produce economic benefit.This pattern dropped into without output causes enterprise not positive to Environmental Inputs, and sewage disposal and living bait are produced and are coupled together by the present invention, not only can realize sewage effectively to process, and living bait production cost can be reduced, realize the recycle of the sustainable of environment and resource, meet the trend of the national development ecological agriculture, green agriculture and circular agriculture;
3, livestock and poultry cultivation sewage is serious source of pollution, is also valuable resource.And the present invention introduces photosynthetic bacterium, micro-algae and cladocera in traditional livestock and poultry cultivation sewage treatment process; by photosynthetic bacterium-micro-algae-cladocera food chain, the purification of natural pond, pig farm liquid and living bait production are coupled; the nutritive salt such as the nitrogen of natural pond, pig farm liquid middle and high concentration, phosphorus, organism are utilized to cultivate photosynthetic bacterium and micro-algae; cultivated photosynthetic bacterium and micro-algae are produced living bait by cladocera filter food and is used for animal cultivation production; thus the efficient circulation realizing environment protection and resource utilizes, ensure and produce and ecological Sustainable development.
Accompanying drawing explanation
Accompanying drawing 1 is the method flow schematic diagram of natural pond, a kind of pig farm of the present invention liquid recycling.
Embodiment
Embodiment 1
Natural pond, pig farm liquid recycling based on photosynthetic bacterium-micro-algae-cladocera and purifying treatment is carried out in Shanghai Chongming large-scale stdn pig-breeding enterprise.Cultivate tank, transparent cylindrical synthetic glass post, column flexible plastic film bag, multi-stage aeration filtration unit, zooplankton enrichment recovering device, pipeline and inflation facility etc. by building 200 square meter warmhouse booths on natural pond liquid pool side and installing in booth, carry out natural pond, pig farm liquid recycling and purifying treatment.
Please refer to Fig. 1, Fig. 1 is the method flow schematic diagram of natural pond, a kind of pig farm of the present invention liquid recycling.A method for natural pond, pig farm liquid recycling, Main is that the fermentation biogas liquid that flows out in digester of pig farm filters through multi-stage aeration successively, inoculation photosynthetic bacterium cultivate, inoculate cladocera filter food photosynthetic bacterium and collect cladocera, filtrate inoculation unicellular algae cultivate, inoculate cladocera filter food single-cell algae and the link such as water discharge up to standard or reuse after collecting cladocera and process.First utilize the organism in the liquid of photosynthetic bacterium degraded natural pond in treating processes and generate thalline, micro-algae is utilized to absorb the nutritive salt such as nitrogen phosphorus in natural pond liquid and generate frustule afterwards, the organic debris formed in recycling cladocera non-selective filter food treating processes, photosynthetic bacterium and unicellular algae, the cladocera produced, photosynthetic bacterium, unicellular algae can be used for aquaculture or bait, thus realize the recycling of pollution substance in the liquid of natural pond.
Wherein, first the fermentation biogas liquid that methane-generating pit flows out filter through multi-stage aeration, the stainless steel mesh specification that the multi-stage aeration adopted filters is followed successively by 200 orders, 300 orders, 400 orders and 500 orders, screen cloth tilts at an angle, in screen bottom, nanometer aeration pipe is installed, by the part ammonia-nitrogen desorption in the liquid of natural pond under the effect of aeration, prevents sieve mesh from blocking simultaneously.
Wherein, photosynthetic bacterium is inoculated with degraded and absorption organism in the natural pond liquid that multi-stage aeration filters, the bacterial classification of photosynthetic bacterium is Rhodopseudomonas Rhodopseudomonas, rhodospirillum Rhodospirillum and red bacterium belong to the kind of Rhodobacter, the ratio that the initial inoculum of photosynthetic bacterium and multi-stage aeration filter natural pond liquid is 3:7 ~ 5:5, carry out cultivation in 5 ~ 10 days in transparent synthetic glass post or column flexible plastic film bag after, maintain certain natural pond liquid to flow into and photosynthetic bacteria liquid take-off rate implementation cultured continuously, the speed of inflow and outflow adjusts according to photosynthetic bacterium growth situation.
Wherein, a cultured photosynthetic bacterium part can directly be gathered for aquaculture production as required, after the photosynthetic bacteria liquid that another part flows out enters square cultivation tank, inoculation cladocera, utilize the organic debris in the non-selective filter Shiqi of cladocera and photosynthetic bacterium, thus the organic and particles of inorganic material in removal water body, promote water transparency, the kind of the cladocera inoculated is seemingly close naked abdomen flea Moinaaffinis, the Daphnia magna Daphniamagna of flea genus and the trunk flea Bosminalongirostris of trunk flea genus that naked abdomen flea belongs to.
Wherein, the cladocera cultivated is by filtering recovering device enrichment, and the cladocera of enrichment can be used as the living bait of aquatic animal seedling or aquarium fish, also capable of circulation for filtering food unicellular algae.
Wherein, the natural pond liquid of food is once filtered through cladocera, inoculation unicellular algae is to absorb the nutritive salt such as nitrogen phosphorus in water body, the algae kind of unicellular algae is Chlorella Chlorella, egg capsule Trentepohlia Oocystis, the kind of Chlorococcum Chlorococcum and Scenedesmus Scenedesmus, single celled initial inoculum is 1:1 ~ 5 with the ratio of once filtering the natural pond liquid of food through cladocera, carry out 5 ~ 10 days air-charging incubation in transparent synthetic glass post or column flexible plastic film bag after, maintain certain natural pond liquid to flow into and single-cell algae liquid take-off rate implementation cultured continuously, the speed of inflow and outflow adjusts according to the content of single cells grown situation and Water phosphorus.
Wherein, a cultured algae liquid part can directly be gathered for aquaculture production as required, after the algae liquid that another part flows out enters square cultivation tank, inoculation cladocera, utilize the organic debris in cladocera nonselective filter food characteristic secondary filter Shiqi and unicellular algae, further purifying water body, the kind of the cladocera inoculated is seemingly close naked abdomen flea Moinaaffinis, the Daphnia magna Daphniamagna of flea genus and the trunk flea Bosminalongirostris of trunk flea genus that naked abdomen flea belongs to.
Wherein, through the natural pond liquid of cladocera secondary filter food, after meeting livestock and poultry cultivation sewage drainage standard after testing, can carry out processing water up to standard discharge or reuse and rush liquid dung as pig house, not reach emission standard if detect, carry out re-treatment.
Implementation result:
Within 2015, carry out natural pond, pig farm liquid recycling and purifying treatment by the inventive method, co-processing natural pond liquid about 450 cubic metres, wherein produce photosynthetic bacteria liquid 75 cubic metres, single-cell algae liquid 50 cubic metres, fresh and alive cladocera 355 kilograms, obtain about 310 cubic metres, qualified discharge water body, the main water-quality guideline of discharge water is as follows: chemical oxygen demand <300mg/L, ammonia nitrogen <50mg/L, total phosphorus <5mg/L, pH6.8-7.5, transparency > 40cm.
The method of natural pond, a kind of pig farm liquid recycling has obvious advantage compared with traditional method, the photosynthetic bacterium generated in the liquid treating processes of natural pond, unicellular algae and cladocera can be used for aquaculture and bait by natural pond, pig farm of the present invention liquid resource utilization method, by food chain, the pollution substance in the liquid of natural pond is realized recycling, have drop into low, energy consumption is low, can produce the feature of obvious economy and ecological benefits; Traditional wastewater treatment engineering can only cut down the quantity discharged of pollutent and discharge intensity, and usual rare product output, can only produce environment, ecology and social benefit, is difficult to produce economic benefit.This pattern dropped into without output causes enterprise not positive to Environmental Inputs, and sewage disposal and living bait are produced and are coupled together by the present invention, not only can realize sewage effectively to process, and living bait production cost can be reduced, realize the recycle of the sustainable of environment and resource, meet the trend of the national development ecological agriculture, green agriculture and circular agriculture;
Livestock and poultry cultivation sewage is serious source of pollution, is also valuable resource.The present invention introduces photosynthetic bacterium, micro-algae and cladocera in traditional livestock and poultry cultivation sewage treatment process; by photosynthetic bacterium-micro-algae-cladocera food chain, the purification of natural pond, pig farm liquid and living bait production are coupled; the nutritive salt such as the nitrogen of natural pond, pig farm liquid middle and high concentration, phosphorus, organism are utilized to cultivate photosynthetic bacterium and micro-algae; cultivated photosynthetic bacterium and micro-algae are produced living bait by cladocera filter food and is used for animal cultivation production; thus the efficient circulation realizing environment protection and resource utilizes, ensure and produce and ecological Sustainable development.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the prerequisite not departing from the inventive method; can also make some improvement and supplement, these improve and supplement and also should be considered as protection scope of the present invention.
Claims (8)
1. the method for natural pond, pig farm liquid recycling, it is characterized in that, the fermentation biogas liquid flowed out in digester of pig farm filters through multi-stage aeration successively, inoculation photosynthetic bacterium is also cultivated, inoculation cladocera filter food photosynthetic bacterium also collects cladocera, filtrate inoculation unicellular algae is also cultivated, inoculation cladocera filter food single-cell algae also collects cladocera and water discharge up to standard or reuse link after processing, first utilize the organism in the liquid of photosynthetic bacterium degraded natural pond in treating processes and generate thalline, micro-algae is utilized to absorb the nutritive salt such as nitrogen phosphorus in natural pond liquid and generate frustule afterwards, the organic debris formed in recycling cladocera non-selective filter food treating processes, photosynthetic bacterium and unicellular algae, the cladocera produced, photosynthetic bacterium, unicellular algae is used for aquaculture or bait, thus realize the recycling of pollution substance in the liquid of natural pond.
2. the method for natural pond, a kind of pig farm according to claim 1 liquid recycling, it is characterized in that, first the fermentation biogas liquid flowed out in digester of pig farm filter through multi-stage aeration, the stainless steel mesh specification that the multi-stage aeration adopted filters is followed successively by 200 orders, 300 orders, 400 orders and 500 orders, screen cloth tilts at an angle, installs nanometer aeration pipe in screen bottom, by the part ammonia-nitrogen desorption in the liquid of natural pond under the effect of aeration, prevent sieve mesh from blocking simultaneously.
3. the method for natural pond, a kind of pig farm according to claim 1 liquid recycling, it is characterized in that, photosynthetic bacterium is inoculated with degraded and absorption organism in the natural pond liquid that multi-stage aeration filters, the bacterial classification of photosynthetic bacterium is Rhodopseudomonas Rhodopseudomonas, rhodospirillum Rhodospirillum and red bacterium belong to the kind of Rhodobacter, the ratio that the initial inoculum of photosynthetic bacterium and multi-stage aeration filter natural pond liquid is 3:7 ~ 5:5, carry out cultivation in 5 ~ 10 days in transparent synthetic glass post or column flexible plastic film bag after, maintain certain natural pond liquid to flow into and photosynthetic bacteria liquid take-off rate implementation cultured continuously, the speed of inflow and outflow adjusts according to photosynthetic bacterium growth situation.
4. the method for natural pond, a kind of pig farm according to claim 1 liquid recycling, it is characterized in that, a cultured photosynthetic bacterium part is directly gathered as required for aquaculture production, after the photosynthetic bacteria liquid that another part flows out enters square cultivation tank, inoculation cladocera, utilize the organic debris in the non-selective filter Shiqi of cladocera and photosynthetic bacterium, thus the organic and particles of inorganic material in removal water body, promote water transparency, the kind of the cladocera inoculated is the seemingly close naked abdomen flea Moinaaffinis that naked abdomen flea belongs to, the Daphnia magna Daphniamagna that flea belongs to and the trunk flea Bosminalongirostris that trunk flea belongs to.
5. the method for natural pond, a kind of pig farm according to claim 1 liquid recycling, it is characterized in that, the cladocera cultivated is by filtering recovering device enrichment, and the cladocera of enrichment is used as the living bait of aquatic animal seedling or aquarium fish, is also cycled to used in filter food unicellular algae.
6. the method for natural pond, a kind of pig farm according to claim 1 liquid recycling, it is characterized in that, the natural pond liquid of food is once filtered through cladocera, inoculation unicellular algae is to absorb the nutritive salt such as nitrogen phosphorus in water body, the algae kind of unicellular algae is Chlorella Chlorella, egg capsule Trentepohlia Oocystis, the kind of Chlorococcum Chlorococcum and Scenedesmus Scenedesmus, single celled initial inoculum is 1:1 ~ 5 with the ratio of once filtering the natural pond liquid of food through cladocera, carry out 5 ~ 10 days air-charging incubation in transparent synthetic glass post or column flexible plastic film bag after, maintain certain natural pond liquid to flow into and single-cell algae liquid take-off rate implementation cultured continuously, the speed of inflow and outflow adjusts according to the content of single cells grown situation and Water phosphorus.
7. the method for natural pond, a kind of pig farm according to claim 1 liquid recycling, it is characterized in that, a cultured algae liquid part is directly gathered as required for aquaculture production, after the algae liquid that another part flows out enters square cultivation tank, inoculation cladocera, utilize the organic debris in cladocera nonselective filter food characteristic secondary filter drinking water body and unicellular algae, further purifying water body, the kind of the cladocera inoculated is the seemingly close naked abdomen flea Moinaaffinis that naked abdomen flea belongs to, the Daphnia magna Daphniamagna that flea belongs to and the trunk flea Bosminalongirostris that trunk flea belongs to.
8. the method for natural pond, a kind of pig farm according to claim 1 liquid recycling, it is characterized in that, through the natural pond liquid of cladocera secondary filter food, after meeting livestock and poultry cultivation sewage drainage standard after testing, carry out discharge of wastewater process up to standard or reuse and rush liquid dung as pig house, do not reach emission standard if detect, carry out re-treatment.
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CN110128181A (en) * | 2019-06-14 | 2019-08-16 | 武汉益锦祥生物环保有限公司 | A kind of production method and process units of the phycomycete fertilizer based on biogas slurry |
CN107509673B (en) * | 2017-08-18 | 2020-08-18 | 上海海洋大学 | Intensive Litopenaeus vannamei breeding wastewater resource utilization method |
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