CN103204719A - Method and device for disposing animal manure to produce organic fertilizer by solar energy - Google Patents
Method and device for disposing animal manure to produce organic fertilizer by solar energy Download PDFInfo
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- CN103204719A CN103204719A CN201310155779XA CN201310155779A CN103204719A CN 103204719 A CN103204719 A CN 103204719A CN 201310155779X A CN201310155779X A CN 201310155779XA CN 201310155779 A CN201310155779 A CN 201310155779A CN 103204719 A CN103204719 A CN 103204719A
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/133—Renewable energy sources, e.g. sunlight
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Abstract
The invention discloses a method and device for disposing animal manure to produce an organic fertilizer by solar energy. The method comprises the following steps of: mixing with organic waste after carrying out solid-liquid separation on animal manure, adding efficient high-temperature microorganism fermentation bacteria; firstly, feeding into a solar biological fermentation tank to carry out primary fermentation, feeding to a solar biological post-fermentation tank to carry out secondary post fermentation; leading the gas generated during fermentation into a gas purifier to purify through a gas collecting pipeline; taking ferrous sulfate solution as spray absorption liquid; crystallizing by a crystallization tank, fixing ammonia and hydrogen sulfide into effective fertilizer components, and crushing and sieving the fermented materials to obtain a high-quality organic fertilizer. The method has the beneficial effects that the organic wastes such as animal manure and straws are taken as materials; the wastes are converted into precious materials; the bacteria, worms and ovum are killed by solar energy; the time of reducing moisture in the fertilizer is shortened; the fermentation efficiency is improved; and the problem of secondary pollution caused by total nutrient loss and waste gas in the fermentation process is solved.
Description
Technical field
The invention belongs to the organic fertilizer production technology, be particularly related to a kind of method of utilizing sun power to dispose feces of livestock and poultry production fertilizer.
Background technology
In recent years, along with the progressively raising of living standards of the people, plant husbandry and aquaculture are developed, and have satisfied the people's productive life demand, but agricultural organic waste and feces of livestock and poultry etc. have also caused serious pollution to environment simultaneously.
The technology of utilizing feces of livestock and poultry and agricultural organic waste to produce fertilizer has at present solved its problem of environmental pollution to a certain extent, but because the production technique imperfection has also brought some new problems.Traditional organic fertilizer production zymotechnique is for opening wide the fermentation of bar buttress formula or the fermentation of steel closed, can't control effectively the ammonia that produces in the fermentation production process, hydrogen sulfide etc., thereby causes secondary pollution easily.The fermented manure process of some technology, other material that also need burn heats makes it reach temperature required, to kill harmful bacterium in the fermented product, worm, worm's ovum etc., has consumed the valuable energy.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of sun power that utilizes and kills harmful bacterium, worm, worm's ovum in the fermentation materials, improves fermentation efficiency, totally-enclosed fermentation, solves the fermenting process total nutrient and run off and produce waste gas and cause the sun power that utilizes of secondary pollution problem to dispose the method that feces of livestock and poultry is produced fertilizer.
The present invention solves the problems of the technologies described above with following technical scheme:
Processing step of the present invention is:
(1), feces of livestock and poultry adopts solid-liquid separation, airing, drying mode processed, moisture controlled is less than 75%;
(2), the feces of livestock and poultry after above-mentioned (1) the step processing is mixed with agricultural organic waste, add efficient high temperature microbe zymophyte, and the adjustment material moisture is 40%～70%, the U-shaped hopper that drops into sun power biological fermentation groove carries out one time fermentation, start material turning machine work, open air feed blower fan air feed simultaneously, material turning every day of U-shaped hopper once, continuously fermented 5-12 days, the gas that produces between yeast phase is introduced gas-cleaning installation by the collection and confinement of gases pipeline;
(3) work in-process after above-mentioned (2) step fermentation are sent into the biological after-ripening groove of sun power and carry out the secondary afterripening fermentation; Start material turning machine work, open air feed blower fan air feed simultaneously, material turning every day of U-shaped hopper was once continuously fermented 12-30 days, and the gas that produces between yeast phase is introduced gas-cleaning installation by the collection and confinement of gases pipeline;
(4) gas of above-mentioned (2) and (3) step gained is sent into waste gas cleaning system, the employing spray column purifies, utilize copperas solution as the spray absorption liquid, through the crystallizer tank crystallization, ammonia, hydrogen sulfide are fixed into effective fertile part, have solved nutrient loss and secondary pollution problem;
(5) material after above-mentioned (3) step gained fermentation namely be can be made into high-quality fertilizer after pulverizing, sieving, quantitative package gets product.
Agricultural organic waste comprises stalk, sawdust, bagasse, bacterium rod, offal, Chinese medicine slag.
Efficient high temperature microbe zymophyte is to meet microbial inoculum, comprises vinelandii, withered grass bud pole bacterium, colloid bud robe bacillus, phosphate solubilizing bacteria, yeast, milk-acid bacteria, root nodule fungi etc.
Technical target of the product meets the requirement of People's Republic of China's agricultural industry criteria " organic fertilizer " NY525-2012.
Specific equipment of the present invention is:
1. sun power biological fermentation groove:
Solar energy light collecting film and structure-steel framing integral body thereof are full-closed structure; The fermenter hopper is arranged in the enclosed construction, and material turning device and some the capable rails for the walking of material turning device that be arranged in parallel are arranged at hopper top, and bottom land is equipped with the air-supply duct that is connected with the air feed blower fan; The collection and confinement of gases pipeline that sets up in the solar energy light collecting membrane structure frame is connected with gas-cleaning installation;
The fermenter hopper is U-shaped structure; The hopper groove depth is 0.8～3 meter, and groove width is 3～16 meters, and flute length is 32～80 meters; Building materials are that brick mixes, steel reinforced concrete or other light building material;
4～7 meters of totally enclosed solar energy light collecting membrane structure frame height, the top is arch or triangular structure.
2. the biological after-ripening groove of sun power:
Solar energy light collecting film and structure-steel framing integral body thereof are full-closed structure, after-ripening groove hopper is arranged in the enclosed construction, material turning device and some the capable rails for the walking of material turning device that be arranged in parallel are arranged at hopper top, and bottom land is equipped with the air-supply duct that is connected with the air feed blower fan; The collection and confinement of gases pipeline that sets up in the solar energy light collecting membrane structure frame is connected with gas-cleaning installation.
The biological after-ripening groove of sun power hopper is U-shaped structure; The groove depth of hopper is 1.5～5 meters, and groove width is 3～16 meters, and flute length is 32～80 meters; Make material and be that brick mixes, steel reinforced concrete or other light building material.
Totally enclosed solar energy light collecting membrane structure frame integral body is full-closed structure, 4～9 meters of height, and top structure is arch or trilateral.
3. gas-cleaning installation:
Venting port is arranged at the top of spray column, and shower nozzle is arranged at the top of inner chamber, and shower nozzle connects reservoir by recycle pump; The bottom of inner chamber has pipeline to connect effuser and be connected crystallizer tank by upflow tube by induced draft fan respectively; There is agitator dissolving tank inside, and the bottom has pipeline to connect reservoir through control valve.
Beneficial effect of the present invention is:
1, is raw material with organic wastes such as feces of livestock and poultry, stalks, turns waste into wealth;
2, utilized clean free of contamination warming solar energy, heat, take full advantage of sun power, saved the energy, both can fully kill harmful bacterium, worm, worm's ovum in the fermentation materials, also shorten the time of reducing fertilizer moisture greatly, improved the efficient of fermentation effectively;
3, totally enclosed zymotechnique, the centralized collection gas sweetening is fixed into effective fertile part to ammonia, hydrogen sulfide, not only solves the problem that the fermenting process total nutrient runs off, and has also solved to produce waste gas in the fermenting process and cause secondary pollution problem.
Description of drawings
Fig. 1 disposes the process flow sheet that feces of livestock and poultry is produced the fertilizer method for the present invention utilizes sun power.
Fig. 2 produces the used sun power biological fermentation groove structural representation of fertilizer method for the present invention utilizes sun power to dispose feces of livestock and poultry.1-hopper among the figure, 2-totally enclosed solar energy light collecting film, 3-structure-steel framing, the capable rail of 4-, 5-material turning device, 6-air-supply duct, 7-air feed blower fan, 8-collection and confinement of gases tracheae, 9-gas-cleaning installation.
Fig. 3 produces the biological after-ripening groove of the used sun power of fertilizer method structural representation for the present invention utilizes sun power to dispose feces of livestock and poultry.Among the figure: 21-hopper, 22--solar energy light collecting film, 23-structure-steel framing, the capable rail of 24-, 25-material turning device, 26-air-supply duct, 27-air feed blower fan, 28-collection and confinement of gases tracheae, 29-gas-cleaning installation.
Fig. 4 produces the used waste gas cleaning system structural representation of fertilizer method for the present invention utilizes sun power to dispose feces of livestock and poultry.Among the figure: 31-effuser, 32-induced draft fan, 33-spray column, 34-dissolving tank, 35-recycle pump, 36-crystallizer tank, 37-reservoir, 38-control valve, 39-agitator, 310-venting port, 311-upflow tube, 312-shower nozzle.
Embodiment
The present invention utilizes sun power to dispose the method that organism such as feces of livestock and poultry and stalk are produced fertilizer, be to be raw material with organic wastes such as feces of livestock and poultry, stalks, turn waste into wealth, utilize clean free of contamination sun power to kill harmful bacterium, worm, worm's ovum in the fermentation materials, shorten the time of reducing fertilizer moisture, effectively improve the efficient of fermentation, totally enclosed is fermented.
Its concrete technology is that feces of livestock and poultry is after mode processed such as solid-liquid separation, fully mix with organism such as stalks, enter sun power biological fermentation groove after adding the high-effective microorganism zymophyte and regulating moisture and carry out one time fermentation, be transferred to the biological after-ripening groove of sun power again and carry out Secondary Fermentation, finally by pulverizing, screening, make high-quality fertilizer, the gas that produces in the groove purifies to dispose by centralized collection and purifies.In the process of centralized collection gas sweetening, ammonia, hydrogen sulfide are fixed into effective fertile part, not only solve the problem that the fermenting process total nutrient runs off, also solved and produce waste gas in the fermenting process and cause secondary pollution problem.
Establish capable rail 4 on the U-shaped hopper 1 of sun power biological fermentation groove, on the row rail 4 material turning device 5 is housed, fermentation materials is sent into fermenter through belt, and polishing apparatus 5 is turned in utilization makes mixing of materials even, and it is more abundant to ferment.U-shaped hopper bottom land is laid air-supply duct 6, and is connected with air feed blower fan 7, is used to fermentation materials to provide oxygen to carry out abundant aerobic fermentation, reduces the generation of foul gas.
The biological after-ripening groove of sun power is except U-shaped hopper and solar energy light collecting membrane structure frame height are higher than the height of the U-shaped hopper of sun power biological fermentation groove and solar energy light collecting membrane structure frame respectively, and all the other structures are basic identical with the structure of sun power biological fermentation groove.
Venting port 310 is arranged at the top of the spray column 33 of gas-cleaning installation, and the shower nozzle 312 that connects reservoir 37 by recycle pump 35 is arranged at the top of spray column inner chamber; The bottom of spray column inner chamber has 1 pipeline to connect effuser 31 through induced draft fan 32, and 1 pipeline connects crystallizer tank 36 through upflow tube 311 in addition; There is agitator 39 dissolving tank 34 inside, and the bottom has pipeline to connect reservoir 37 through control valve 38.During operation, the induced draft fan 32 of waste gas cleaning system is sent into spray column 33 bottoms to the waste gas that the workshop produces by effuser 31, recycle pump 35 sprays into the copperas solution of reservoir 34 as the shower nozzle 312 of absorption liquid from spray column 33 tops, discharge from spray column 33 top vent 310 after the gas sweetening, the spray absorption liquid of spray column 33 bottoms enters crystallizer tank 36 crystallizations by upflow tube 311 gravity flows, and unnecessary spray liquid gravity flow enters the reservoir 37 of crystallizer tank 36 ends; Copperas solution in the dissolving tank 34 is controlled by liquid level, and enters reservoir 37, the xln reuse organic fertilizer production in the crystallizer tank 36 by automatic the replenishing of control valve 38 control flows.
Absorption liquid is copperas solution, ammonia in the waste gas and the reaction of the ferrous sulfate in the absorption liquid generate ammonium sulfate and ferrous hydroxide, ferrous hydroxide further is oxidized to ironic hydroxide, hydrogen sulfide and ammonia generate ammonium sulfide, the reaction of ammonium sulfide and ferrous sulfate generates Iron sulfuret and ammonium sulfate, obtains ferrous sulfate crystal, ironic hydroxide crystal and ammonia sulfate crystal after entering the crystallizer tank crystallisation by cooling.The main chemical reactions equation is as follows:
NH
3+H
2O=NH
4OH
FeSO
4+2NH
4OH=Fe(OH)
2+(NH
4)
2SO
4
4Fe(OH)
2+O
2+2H
2O=4Fe(OH)
3
H
2S+2NH
4OH=(NH
4)
2S+2H
2O
(NH
4)
2S+FeSO
4=FeS+(NH
4)
2SO
4
Embodiment 1:
Feces of livestock and poultry adopts the solid-liquid separation method processed, and control moisture 70% adds mass ratio 30% stalk after crushed, adds high-effective microorganism fermenting agent vinelandii again, and regulating moisture is 60%; The U-shaped hopper of material being sent into sun power biological fermentation groove carries out one time fermentation, start material turning machine work, open air feed blower fan air feed simultaneously, material turning every day of U-shaped hopper once, continuously fermented 10 days, the gas that produces between yeast phase is introduced gas-cleaning installation by the collection and confinement of gases pipeline; The U-shaped groove that enters the biological after-ripening groove of sun power after the U-shaped hopper discharging of sun power biological fermentation groove carries out the secondary afterripening fermentation; Start material turning machine work, open air feed blower fan air feed simultaneously, material turning every day of U-shaped hopper was once continuously fermented 25 days, and the gas that produces between yeast phase is introduced gas-cleaning installation by the collection and confinement of gases pipeline; Namely get product after the U-shaped groove discharging process pulverizing of the biological after-ripening groove of sun power, the screening quantitative package; Technical target of the product meets the requirement of People's Republic of China's agricultural industry criteria " organic fertilizer " NY525-2012, leading indicator total nutrient 〉=5%, organic 〉=45%, moisture≤30%.
Embodiment 2:
Feces of livestock and poultry adopts the solid-liquid separation method processed, and control moisture 75% adds weight ratio 30% offal after crushed, adds high-effective microorganism fermenting agent withered grass bud pole bacterium again, and regulating moisture is 65%; The U-shaped hopper of material being sent into sun power biological fermentation groove carries out one time fermentation, start material turning machine work, open air feed blower fan air feed simultaneously, material turning every day of U-shaped hopper once, continuously fermented 8 days, the gas that produces between yeast phase is introduced gas-cleaning installation by the collection and confinement of gases pipeline; The U-shaped groove that the U-shaped hopper discharging of sun power biological fermentation groove enters the biological after-ripening groove of sun power carries out the secondary afterripening fermentation; Start material turning machine work, open air feed blower fan air feed simultaneously, material turning every day of U-shaped hopper was once continuously fermented 30 days, and the gas that produces between yeast phase is introduced gas-cleaning installation by the collection and confinement of gases pipeline; The U-shaped groove discharging of the biological after-ripening groove of sun power through pulverizing, get final product after the screening quantitative package product; Technical target of the product meets the requirement of People's Republic of China's agricultural industry criteria " organic fertilizer " NY525-2012, leading indicator total nutrient 〉=5%, organic 〉=45%, moisture≤30%.
Embodiment 3:
Feces of livestock and poultry adopts the solid-liquid separation method processed, and control moisture 75% adds weight ratio 30% Chinese medicine slag after crushed, adds high-effective microorganism fermenting agent yeast again, and regulating moisture is 60%; The U-shaped hopper of material being sent into sun power biological fermentation groove carries out one time fermentation, start material turning machine work, open air feed blower fan air feed simultaneously, material turning every day of U-shaped hopper once, continuously fermented 10 days, the gas that produces between yeast phase is by the collection and confinement of gases pipeline and introduce gas-cleaning installation; The U-shaped groove that the U-shaped hopper discharging of sun power biological fermentation groove enters the biological after-ripening groove of sun power carries out the secondary afterripening fermentation; Start material turning machine work, open air feed blower fan air feed simultaneously, material turning every day of U-shaped hopper was once continuously fermented 28 days, and the gas that produces between yeast phase is introduced gas-cleaning installation by the collection and confinement of gases pipeline; The U-shaped groove discharging of the biological after-ripening groove of sun power through pulverizing, get final product after the screening quantitative package product; Technical target of the product meets the requirement of People's Republic of China's agricultural industry criteria " organic fertilizer " NY525-2012, leading indicator total nutrient 〉=5%, organic 〉=45%, moisture≤30%.
Claims (9)
1. one kind is utilized sun power to dispose the method that feces of livestock and poultry is produced fertilizer, it is characterized in that processing step is:
(1), feces of livestock and poultry adopts solid-liquid separation, airing, drying mode processed, moisture controlled is less than 75%;
(2), the feces of livestock and poultry after above-mentioned (1) the step processing is mixed with agricultural organic waste, add efficient high temperature microbe zymophyte, and the adjustment material moisture is 40%～70%, the U-shaped hopper that drops into sun power biological fermentation groove carries out one time fermentation, start material turning machine work, open air feed blower fan air feed simultaneously, material turning every day of U-shaped hopper once, continuously fermented 5-12 days, the gas that produces between yeast phase is introduced gas-cleaning installation by the collection and confinement of gases pipeline;
(3) work in-process after above-mentioned (2) step fermentation are sent into the biological after-ripening groove of sun power and carry out the secondary afterripening fermentation; Start material turning machine work, open air feed blower fan air feed simultaneously, material turning every day of U-shaped hopper was once continuously fermented 12-30 days, and the gas that produces between yeast phase is introduced gas-cleaning installation by the collection and confinement of gases pipeline;
(4) gas of above-mentioned (2) and (3) step gained is sent into waste gas cleaning system, the employing spray column purifies, utilize copperas solution as the spray absorption liquid, through the crystallizer tank crystallization, ammonia, hydrogen sulfide are fixed into effective fertile part, have solved nutrient loss and secondary pollution problem;
(5) material after above-mentioned (3) step gained fermentation namely be can be made into high-quality fertilizer after pulverizing, sieving, quantitative package gets product.
2. the sun power that utilizes as claimed in claim 1 is disposed the method that feces of livestock and poultry is produced fertilizer, it is characterized in that agricultural organic waste comprises stalk, sawdust, bagasse, bacterium rod, offal, Chinese medicine slag.
3. the sun power that utilizes as claimed in claim 1 is disposed the method that feces of livestock and poultry is produced fertilizer, it is characterized in that efficient high temperature microbe zymophyte is to meet microbial inoculum, comprise vinelandii, withered grass bud pole bacterium, colloid bud robe bacillus, phosphate solubilizing bacteria, yeast, milk-acid bacteria, root nodule fungi.
4. the sun power that utilizes as claimed in claim 1 is disposed the method that feces of livestock and poultry is produced fertilizer, it is characterized in that technical target of the product meets the requirement of People's Republic of China's agricultural industry criteria " organic fertilizer " NY525-2012.
5. the sun power that utilizes as claimed in claim 1 is disposed the method that feces of livestock and poultry is produced fertilizer, it is characterized in that used specific equipment sun power biological fermentation groove structure is: solar energy light collecting film and structure-steel framing thereof are whole to be full-closed structure; The fermenter hopper is arranged in the enclosed construction, and material turning device and some the capable rails for the walking of material turning device that be arranged in parallel are arranged at hopper top, and bottom land is equipped with the air-supply duct that is connected with the air feed blower fan; The collection and confinement of gases pipeline that sets up in the solar energy light collecting membrane structure frame is connected with gas-cleaning installation.
6. the sun power that utilizes as claimed in claim 5 is disposed the method that feces of livestock and poultry is produced fertilizer, it is characterized in that the fermenter hopper is U-shaped structure; The hopper groove depth is 0.8～3 meter, and groove width is 3～16 meters, and flute length is 32～80 meters; Building materials are that brick mixes, steel reinforced concrete or other light building material; 4～7 meters of totally enclosed solar energy light collecting membrane structure frame height, the top is arch or triangular structure.
7. the sun power that utilizes as claimed in claim 1 is disposed the method that feces of livestock and poultry is produced fertilizer, the solar energy light collecting film and the structure-steel framing integral body thereof that it is characterized in that the biological after-ripening groove of used specific equipment sun power are full-closed structure, after-ripening groove hopper is arranged in the enclosed construction, material turning device and some the capable rails for the walking of material turning device that be arranged in parallel are arranged at hopper top, and bottom land is equipped with the air-supply duct that is connected with the air feed blower fan; The collection and confinement of gases pipeline that sets up in the solar energy light collecting membrane structure frame is connected with gas-cleaning installation.
8. the sun power that utilizes as claimed in claim 7 is disposed the method that feces of livestock and poultry is produced fertilizer, it is characterized in that the biological after-ripening groove of sun power hopper is U-shaped structure; The groove depth of hopper is 1.5～5 meters, and groove width is 3～16 meters, and flute length is 32～80 meters; Make material and be that brick mixes, steel reinforced concrete or other light building material; Solar energy light collecting membrane structure frame integral body is full-closed structure, 4～9 meters of height, and top structure is arch or trilateral.
9. the sun power that utilizes as claimed in claim 1 is disposed the method that feces of livestock and poultry is produced fertilizer, it is characterized in that venting port is arranged at the top of the spray column of used specific equipment gas-cleaning installation, and shower nozzle is arranged at the top of inner chamber, and shower nozzle connects reservoir by recycle pump; The bottom of inner chamber has pipeline to connect effuser and be connected crystallizer tank by upflow tube by induced draft fan respectively; There is agitator dissolving tank inside, and the bottom has pipeline to connect reservoir through control valve.
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| CN103555571A (en) * | 2013-10-16 | 2014-02-05 | 中国科学技术大学苏州研究院 | High-speed economical municipal organic solid waste treatment system and operation method thereof |
| CN103804040A (en) * | 2014-02-24 | 2014-05-21 | 唐山宏文有机肥料有限公司 | Warehouse type aging preparation method for microbial organic fertilizer |
| CN103992163A (en) * | 2014-04-18 | 2014-08-20 | 南京明珠肥料有限责任公司 | Production process of organic inorganic compound fertilizer |
| CN104086247A (en) * | 2014-07-30 | 2014-10-08 | 刘军林 | Removable device for producing biological pesticide fertilizer |
| CN105585343A (en) * | 2016-02-29 | 2016-05-18 | 赵建国 | Fertilizer preparation system using solar energy for drying feces |
| CN108164290A (en) * | 2018-02-01 | 2018-06-15 | 四川中禾高科农牧设备科技有限公司 | The concentration cultivating system of non-pollution discharge |
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| CN109824458A (en) * | 2019-03-28 | 2019-05-31 | 环创(厦门）科技股份有限公司 | A kind of animal wastes fermentation processing method |
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| CN112047771A (en) * | 2020-09-27 | 2020-12-08 | 中国城市建设研究院有限公司 | Organic fertilizer production device and production process |
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Application publication date: 20130717 |