CN104817170A - Large-scale piggery dung treatment ecological circulation system - Google Patents
Large-scale piggery dung treatment ecological circulation system Download PDFInfo
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- CN104817170A CN104817170A CN201510187712.3A CN201510187712A CN104817170A CN 104817170 A CN104817170 A CN 104817170A CN 201510187712 A CN201510187712 A CN 201510187712A CN 104817170 A CN104817170 A CN 104817170A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/20—Fertilizers of biological origin, e.g. guano or fertilizers made from animal corpses
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/40—Bio-organic fraction processing; Production of fertilisers from the organic fraction of waste or refuse
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- Treatment Of Sludge (AREA)
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Abstract
The invention discloses a large-scale piggery dung treatment ecological circulation system which comprises a dung collection unit, a solid-liquid separation unit, an anaerobic fermentation unit, a biogas utilization unit and a biogas slurry utilization unit. The dung collection unit comprises a slurry collection tank, a dung accumulation tank, a settling tank and a slurry storage tank, the solid-liquid separation unit comprises a solid-liquid separator and an organic fertilizer treatment device, the anaerobic fermentation unit is a multistage anaerobic reaction device and comprises a primary anaerobic reaction tank and a secondary anaerobic reaction tank, the biogas utilization unit comprises a biogas cabinet, a biogas purification device and a biogas power generation device, the biogas slurry utilization unit comprises a biogas slurry storage tank, a forestry irrigation device and a farmland irrigation device, and high-temperature oxidation resistant plastic soft protection layers are arranged above the dung accumulation tank and the slurry storage tank. Dung water is fermented to generate biogas and biogas slurry, organic fertilizers are generated after solid-liquid separation, the possibility of secondary pollution caused by waste gas is avoided, waste is effectively and sufficiently reused, and comprehensive utilization rate is increased.
Description
Technical field:
The present invention relates to a kind of excrement dirt and utilize system; particularly relate to a kind of Large-scale pig farm treatment for cow manure ecological recycle system; by adopting solid-liquid separation and anaerobic fermentation technology; first excrement sewage is separated into argol and liquid dung; argol becomes fertilizer through process; liquid dung produces biogas and natural pond liquid through anaerobically fermenting, and biogas can be used for generating, natural pond liquid and can be used for pouring farmland and trees.
Background technology:
Along with the development of livestock industry; Large-scale pig farm and the quick increase in region of raising pigs, the subject matter brought is exactly the process problem of bulky stool sewage and waste water, badly will cause environmental pollution if processed; farmland near pig farm can be brought disaster to time serious, affect the life of peasant.If there is a kind of way effectively can process the excrement sewage of cultivation generation and carry out excrement dirt recycling, so just can saves great expense to aquaculture, improve comprehensive utilization ratio.
Summary of the invention:
Technical problem to be solved by this invention is: provide a kind of Large-scale pig farm treatment for cow manure ecological recycle system; excrement sewage not only can be made to produce biogas and natural pond liquid by fermentation, fertilizer can also be produced through solid-liquid separation; make refuse reach recycling effectively fully, improve comprehensive utilization ratio.
The technical scheme that the present invention takes for technical solution problem is:
A kind of Large-scale pig farm treatment for cow manure ecological recycle system, comprise excrement dirty collector unit, solid-liquid separation unit, anaerobically fermenting unit, biogas utilization unit and natural pond liquid range site, the dirty collector unit of described excrement comprises collecting tank, stercoroma pond, settling tank and liquid storage tank, the excrement sewage ejected from plant is by after described collecting tank, waste liquid flow in liquid storage tank stand-by after settling tank precipitation, and the solid excrement dirt that collecting tank filters out and the solid excrement dirt that settling tank deposits are transported in stercoroma pond stand-by; Described solid-liquid separation unit comprises solid-liquid separating machine and fertilizer treatment unit, and after the solid excrement soiled ends in described stercoroma pond crosses solid-liquid separating machine process, solid matter carries out processing through fertilizer treatment unit, liquid flow in liquid storage tank; Described anaerobically fermenting unit is multistage anaerobic reaction unit, comprises one-level anaerobic reaction-pot and secondary anaerobic retort, and the waste liquid in described liquid storage tank enters into one-level anaerobic reaction-pot and secondary anaerobic retort successively after lift pump promotes; Described biogas utilization unit comprises biogas cabinet, methane purifying device and biogas electricity generation apparatus, the biogas produced in described one-level anaerobic reaction-pot and secondary anaerobic retort enters in described biogas cabinet through getter pipeline, exports the biogas come and be input in biogas electricity generation apparatus after methane purifying device purification from biogas cabinet; Described natural pond liquid range site comprises natural pond liquid storage pool, forestry irrigation rig and farmland irrigating device, the natural pond liquid produced in described one-level anaerobic reaction-pot and secondary anaerobic retort flows in the liquid storage pool of natural pond through natural pond liquid transport pipe, as required, the natural pond liquid of described natural pond liquid storage pool flows into respectively in forestry irrigation rig and farmland irrigating device and utilizes; High temperature resistance sludge proof plastics soft protective layer is provided with above described stercoroma pond and liquid storage tank.
Described collecting tank is " convex " type structure, formed by concrete placement, bottom is divided into blank wall hollow structure, irregularly on the receiving tank of upper part be provided with several waste liquid communicating poress, receiving tank outer end is provided with one deck filtering net, described receiving tank is connected by bolt with between filtering net, and the solid excrement dirt filtered out outside described filtering net is transported in stercoroma pond stand-by; The tip height of described receiving tank leaks the height of dropping-board lower than plant swinery.
Described settling tank is made up of little cisterna ambiens, middle cisterna ambiens and large cisterna ambiens; Described little cisterna ambiens is arranged on the inner chamber of described middle cisterna ambiens, is evenly provided with four small baffles between little cisterna ambiens and middle cisterna ambiens, irregularly on each small baffle is provided with several little communicating pores; Described middle cisterna ambiens is arranged in the inner chamber of described large cisterna ambiens, between middle cisterna ambiens and large cisterna ambiens, be evenly provided with four large baffles, irregularly on each large baffle is provided with several large communicating pores; Described four small baffles and four large baffle positions are staggered mutually, are evenly arranged.
Position in the middle of every two large baffles corresponding to below is provided with a small baffle, and position corresponding above every two small baffles is provided with a large baffle.
As required, multistage anaerobic reaction unit of the present invention can arrange the anaerobic reaction-pot of more than three or three.
The present invention is by adopting solid-liquid separation technique and anaerobic fermentation technology, first excrement sewage is separated into argol and liquid dung, argol becomes fertilizer through processing, fertilizer can directly to farm crop, trees fertilising, liquid dung produces biogas and natural pond liquid through anaerobically fermenting, and biogas can be used for generating, natural pond liquid and can be used for pouring farmland and trees.
The present invention, by being provided with high temperature resistance sludge proof plastics soft protective layer above described stercoroma pond and liquid storage tank, can effectively avoid exhaust gas emission to enter in air, produces secondary pollution, meets the enterprise development theory of environmental protection and public nuisance free.
The present invention is by being designed to " convex " type structure by collecting tank, upper part is receiving tank, receiving tank outer end is provided with one deck filtering net, initial gross separation can be carried out to the waste water of plant, stop that the solid matter in waste liquid enters collecting tank, improve the separating effect of solid-liquid, reduce processing costs, the solid excrement dirt filtered out outside filtering net is transported in stercoroma pond, directly after fertilizer treatment unit processes, enters into recycling link.
The little cisterna ambiens of the present invention, middle cisterna ambiens and large cisterna ambiens connect together mutually, reduce floor space, and sewage along the circumferential direction flow, communicating pores through dividing plate carries out annularly flow between different cavity, increase flow path, slow down flow stream velocity, improve sedimentation effect.
The difference of the dirty utilization system of excrement of the present invention and general Waste Water Treatment is: not only excrement sewage is created biogas by fermentation, also have passed through solid-liquid separation, create fertilizer, and avoid the possibility that waste gas produces secondary pollution, make refuse reach recycling effectively fully, improve comprehensive utilization ratio.
Positive beneficial effect of the present invention is as follows:
1, solid is manufactured fertilizer by the present invention, and biogas is used for generating, natural pond liquid and is used for pouring farmland and trees, making refuse reach recycling effectively fully, improving comprehensive utilization ratio.
2, the present invention fundamentally solves the process problem of large-scale aquaculture excrement sewage, achieves the maximization of cleaner production and utilization of waste material and rationalizes most.
3, present invention, avoiding the possibility that waste gas produces secondary pollution, meet the production theory of environmental protection and public nuisance free, be worthy to be popularized.
Accompanying drawing illustrates:
Fig. 1 is structural principle schematic diagram of the present invention;
Fig. 2 is the structure for amplifying schematic diagram of collecting tank in Fig. 1;
Fig. 3 is the structure for amplifying schematic diagram of settling tank in Fig. 1.
Embodiment:
Below in conjunction with accompanying drawing, the present invention is made further explanation and description:
See Fig. 1, Fig. 2 and Fig. 3, a kind of Large-scale pig farm treatment for cow manure ecological recycle system, comprises excrement dirty collector unit, solid-liquid separation unit, anaerobically fermenting unit, biogas utilization unit and natural pond liquid range site;
The dirty collector unit of excrement comprises collecting tank 2, stercoroma pond 3, settling tank 4 and liquid storage tank 5, the excrement sewage 1 ejected from plant is by after collecting tank 2, waste liquid flow in liquid storage tank 5 stand-by after settling tank 4 precipitates, and the solid excrement dirt that collecting tank 2 filters out and the solid excrement dirt that settling tank 4 deposits are transported in stercoroma pond 3 stand-by;
Solid-liquid separation unit comprises solid-liquid separating machine 6 and fertilizer treatment unit 8, the solid excrement soiled ends in stercoroma pond 3 cross solid-liquid separating machine 6 process after, solid matter carries out processing through fertilizer treatment unit 8, liquid flow in liquid storage tank 5;
Anaerobically fermenting unit is multistage anaerobic reaction unit, comprises one-level anaerobic reaction-pot 9 and secondary anaerobic retort 10, and the waste liquid in liquid storage tank 5 enters into one-level anaerobic reaction-pot 9 and secondary anaerobic retort 10 successively after lift pump 8 promotes;
Biogas utilization unit comprises biogas cabinet 12, methane purifying device 13 and biogas electricity generation apparatus 14, one-level anaerobic reaction-pot 9 and secondary anaerobic retort 10 li of biogas produced enter in biogas cabinet 12 through getter pipeline 11, export the biogas come and be input in biogas electricity generation apparatus 14 after methane purifying device 13 purifies from biogas cabinet 12;
Natural pond liquid range site comprises natural pond liquid storage pool 16, forestry irrigation rig 17 and farmland irrigating device 18, the natural pond liquid that one-level anaerobic reaction-pot 9 and secondary anaerobic retort 10 li produce flows in natural pond liquid storage pool 16 through natural pond liquid transport pipe 15, as required, the natural pond liquid of natural pond liquid storage pool 16 flows into respectively in forestry irrigation rig 17 and farmland irrigating device 18 and utilizes; High temperature resistance sludge proof plastics soft protective layer is provided with above stercoroma pond 3 and liquid storage tank 5.
Wherein: collecting tank 2 is " convex " type structure, formed by concrete placement, bottom is divided into blank wall hollow structure, irregularly on the receiving tank 19 of upper part be provided with several waste liquid communicating poress, receiving tank 19 outer end is provided with one deck filtering net 20, is connected between receiving tank 19 with filtering net 20 by bolt 21, the solid excrement dirt filtered out outside filtering net 20 is transported in stercoroma pond 3 stand-by, receiving tank, the tip height of 19 leaks the height of dropping-board lower than plant swinery.
Settling tank 4 is made up of little cisterna ambiens 22, middle cisterna ambiens 23 and large cisterna ambiens 24, and little cisterna ambiens 22 is arranged on the inner chamber of middle cisterna ambiens 23, is evenly provided with four small baffles 26 between little cisterna ambiens 22 and middle cisterna ambiens 23, irregularly on each small baffle 26 is provided with several little communicating pores; Middle cisterna ambiens 23 is arranged in the inner chamber of large cisterna ambiens 24, between middle cisterna ambiens 23 and large cisterna ambiens 24, be evenly provided with four large baffles 25, irregularly on each large baffle 25 is provided with several large communicating pores; Four small baffles 26 and four large baffle 25 positions are staggered mutually, are evenly arranged; Position in the middle of every two large baffles corresponding to below is provided with a small baffle, and position corresponding above every two small baffles is provided with a large baffle.
As required, multistage anaerobic reaction unit can arrange the anaerobic reaction-pot of more than three or three, carries out multistage anaerobic fermentation reaction.
Excrement sewage is not only created biogas and natural pond liquid by the present invention by fermentation, also have passed through solid-liquid separation, creates fertilizer, and avoids the possibility that waste gas produces secondary pollution, makes refuse reach recycling effectively fully, improves comprehensive utilization ratio.
Claims (5)
1. a Large-scale pig farm treatment for cow manure ecological recycle system, comprise the dirty collector unit of excrement, solid-liquid separation unit, anaerobically fermenting unit, biogas utilization unit and natural pond liquid range site, it is characterized in that: the dirty collector unit of described excrement comprises collecting tank (2), stercoroma pond (3), settling tank (4) and liquid storage tank (5), the excrement sewage (1) ejected from plant is by after described collecting tank (2), waste liquid flow in liquid storage tank (5) stand-by after settling tank (4) precipitation, the solid excrement dirt that collecting tank (2) filters out and the solid excrement dirt that settling tank (4) deposits are transported in stercoroma pond (3) stand-by, described solid-liquid separation unit comprises solid-liquid separating machine (6) and fertilizer treatment unit (8), after the solid excrement soiled ends in described stercoroma pond (3) crosses solid-liquid separating machine (6) process, during solid matter carries out processing through fertilizer treatment unit (8), liquid flow into liquid storage tank (5), described anaerobically fermenting unit is multistage anaerobic reaction unit, comprise one-level anaerobic reaction-pot (9) and secondary anaerobic retort (10), the waste liquid in described liquid storage tank (5) enters into one-level anaerobic reaction-pot (9) and secondary anaerobic retort (10) successively after lift pump (8) promotes, described biogas utilization unit comprises biogas cabinet (12), methane purifying device (13) and biogas electricity generation apparatus (14), described one-level anaerobic reaction-pot (9) and inner the produced biogas of secondary anaerobic retort (10) enter in described biogas cabinet (12) through getter pipeline (11), export the biogas come and be input in biogas electricity generation apparatus (14) after methane purifying device (13) purification from biogas cabinet (12), described natural pond liquid range site comprises natural pond liquid storage pool (16), forestry irrigation rig (17) and farmland irrigating device (18), described one-level anaerobic reaction-pot (9) and inner the produced natural pond liquid of secondary anaerobic retort (10) flow in natural pond liquid storage pool (16) through natural pond liquid transport pipe (15), as required, the natural pond liquid of described natural pond liquid storage pool (16) flows into respectively in forestry irrigation rig (17) and farmland irrigating device (18) and utilizes, high temperature resistance sludge proof plastics soft protective layer is provided with described stercoroma pond (3) and liquid storage tank (5) top.
2. Large-scale pig farm treatment for cow manure ecological recycle system according to claim 1, it is characterized in that: described collecting tank (2) is " convex " type structure, formed by concrete placement, bottom is divided into blank wall hollow structure, the receiving tank (19) of upper part is above irregular is provided with several waste liquid communicating poress, receiving tank (19) outer end is provided with one deck filtering net (20), be connected by bolt (21) between described receiving tank (19) with filtering net (20), the solid excrement dirt that described filtering net (20) outside filters out is transported in stercoroma pond (3) stand-by, the tip height of described receiving tank (19) leaks the height of dropping-board lower than plant swinery.
3. Large-scale pig farm treatment for cow manure ecological recycle system according to claim 1, is characterized in that: described settling tank (4) is made up of little cisterna ambiens (22), middle cisterna ambiens (23) and large cisterna ambiens (24); Described little cisterna ambiens (22) is arranged on the inner chamber of described middle cisterna ambiens (23), is evenly provided with four small baffles (26) between little cisterna ambiens (22) and middle cisterna ambiens (23), and each small baffle (26) is above irregular is provided with several little communicating pores; Described middle cisterna ambiens (23) is arranged in the inner chamber of described large cisterna ambiens (24), is evenly provided with four large baffles (25) between middle cisterna ambiens (23) and large cisterna ambiens (24), and each large baffle (25) is above irregular is provided with several large communicating pores; Described four small baffles (26) and four large baffle (25) positions are staggered mutually, are evenly arranged.
4. Large-scale pig farm treatment for cow manure ecological recycle system according to claim 3; it is characterized in that: the position in the middle of every two large baffles corresponding to below is provided with a small baffle, and position corresponding above every two small baffles is provided with a large baffle.
5. Large-scale pig farm treatment for cow manure ecological recycle system according to claim 1, it is characterized in that: as required, multistage anaerobic reaction unit can arrange the anaerobic reaction-pot of more than three or three, carries out multistage anaerobic fermentation reaction.
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| CN201510187712.3A CN104817170B (en) | 2015-04-21 | 2015-04-21 | Large-scale pig farm treatment for cow manure ecological recycle system |
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| CN201510187712.3A CN104817170B (en) | 2015-04-21 | 2015-04-21 | Large-scale pig farm treatment for cow manure ecological recycle system |
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| CN104817170B CN104817170B (en) | 2018-02-02 |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105272393A (en) * | 2015-09-30 | 2016-01-27 | 广西晟农有机肥有限公司 | Pig dung comprehensive utilization system and method thereof |
| CN106045233A (en) * | 2016-08-05 | 2016-10-26 | 牧原食品股份有限公司 | Animal husbandry and breeding industry waste discharge and integrated treatment system |
| CN106045234A (en) * | 2016-08-05 | 2016-10-26 | 牧原食品股份有限公司 | Modern breeding industry waste collection and treatment system |
| CN106045267A (en) * | 2016-08-05 | 2016-10-26 | 牧原食品股份有限公司 | Pig farm manure fertilizer ecological circulation treatment system |
| CN106035095A (en) * | 2016-08-05 | 2016-10-26 | 牧原食品股份有限公司 | Environmentally friendly and energy-saving drainage system of large farm |
| CN106082552A (en) * | 2016-08-05 | 2016-11-09 | 牧原食品股份有限公司 | Scale livestock culture treatment for cow manure system |
| CN106082553A (en) * | 2016-08-05 | 2016-11-09 | 牧原食品股份有限公司 | Pig farm pig manure collects circulating treating system automatically |
| CN106315979A (en) * | 2016-09-22 | 2017-01-11 | 福州科力恩生物科技有限公司 | Biogas waste liquid treatment device and treatment method |
| CN106351736A (en) * | 2016-10-26 | 2017-01-25 | 南通市农业委员会 | Method and system for generating electricity by excrement methane in livestock and poultry farm |
| CN106365311A (en) * | 2016-10-24 | 2017-02-01 | 福建省农业科学院农业工程技术研究所 | Dung disposal ecological cycle system for large-scare pig farm |
| CN108164309A (en) * | 2018-01-19 | 2018-06-15 | 中阳县厚通科技养殖有限公司 | A kind of pig raising waste source rape Water-soluble fertilizer special |
| CN109588367A (en) * | 2018-11-19 | 2019-04-09 | 郑州大智农牧科技有限公司 | A kind of ecology zero-emission home farm high-efficient production technology |
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| CN103435154A (en) * | 2013-09-02 | 2013-12-11 | 潮州市建成农业综合开发有限公司 | Method for recycling contaminants of large-scale livestock and poultry farm |
| CN203803161U (en) * | 2014-04-14 | 2014-09-03 | 牧原食品股份有限公司 | Annular large-scale pig farm wastewater reclamation sedimentation basin |
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2015
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103435154A (en) * | 2013-09-02 | 2013-12-11 | 潮州市建成农业综合开发有限公司 | Method for recycling contaminants of large-scale livestock and poultry farm |
| CN203803161U (en) * | 2014-04-14 | 2014-09-03 | 牧原食品股份有限公司 | Annular large-scale pig farm wastewater reclamation sedimentation basin |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105272393A (en) * | 2015-09-30 | 2016-01-27 | 广西晟农有机肥有限公司 | Pig dung comprehensive utilization system and method thereof |
| CN106045233A (en) * | 2016-08-05 | 2016-10-26 | 牧原食品股份有限公司 | Animal husbandry and breeding industry waste discharge and integrated treatment system |
| CN106045234A (en) * | 2016-08-05 | 2016-10-26 | 牧原食品股份有限公司 | Modern breeding industry waste collection and treatment system |
| CN106045267A (en) * | 2016-08-05 | 2016-10-26 | 牧原食品股份有限公司 | Pig farm manure fertilizer ecological circulation treatment system |
| CN106035095A (en) * | 2016-08-05 | 2016-10-26 | 牧原食品股份有限公司 | Environmentally friendly and energy-saving drainage system of large farm |
| CN106082552A (en) * | 2016-08-05 | 2016-11-09 | 牧原食品股份有限公司 | Scale livestock culture treatment for cow manure system |
| CN106082553A (en) * | 2016-08-05 | 2016-11-09 | 牧原食品股份有限公司 | Pig farm pig manure collects circulating treating system automatically |
| CN106315979A (en) * | 2016-09-22 | 2017-01-11 | 福州科力恩生物科技有限公司 | Biogas waste liquid treatment device and treatment method |
| CN106365311A (en) * | 2016-10-24 | 2017-02-01 | 福建省农业科学院农业工程技术研究所 | Dung disposal ecological cycle system for large-scare pig farm |
| CN106351736A (en) * | 2016-10-26 | 2017-01-25 | 南通市农业委员会 | Method and system for generating electricity by excrement methane in livestock and poultry farm |
| CN108164309A (en) * | 2018-01-19 | 2018-06-15 | 中阳县厚通科技养殖有限公司 | A kind of pig raising waste source rape Water-soluble fertilizer special |
| CN109588367A (en) * | 2018-11-19 | 2019-04-09 | 郑州大智农牧科技有限公司 | A kind of ecology zero-emission home farm high-efficient production technology |
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|---|---|
| CN104817170B (en) | 2018-02-02 |
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