CN113667699A - Circular treatment method suitable for agricultural organic solid waste - Google Patents
Circular treatment method suitable for agricultural organic solid waste Download PDFInfo
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- CN113667699A CN113667699A CN202110956042.2A CN202110956042A CN113667699A CN 113667699 A CN113667699 A CN 113667699A CN 202110956042 A CN202110956042 A CN 202110956042A CN 113667699 A CN113667699 A CN 113667699A
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- 239000002910 solid waste Substances 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title claims abstract description 27
- 239000010902 straw Substances 0.000 claims abstract description 52
- 239000010871 livestock manure Substances 0.000 claims abstract description 28
- 238000004064 recycling Methods 0.000 claims abstract description 21
- 210000003608 fece Anatomy 0.000 claims abstract description 20
- 239000010802 sludge Substances 0.000 claims abstract description 20
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 17
- 244000005700 microbiome Species 0.000 claims abstract description 12
- 238000009264 composting Methods 0.000 claims abstract description 11
- 238000000855 fermentation Methods 0.000 claims abstract description 11
- 239000000843 powder Substances 0.000 claims abstract description 11
- 239000003337 fertilizer Substances 0.000 claims abstract description 10
- 238000002156 mixing Methods 0.000 claims abstract description 6
- 241000894006 Bacteria Species 0.000 claims abstract description 4
- 241001149962 Sporothrix Species 0.000 claims abstract description 4
- 241000589596 Thermus Species 0.000 claims abstract description 4
- 239000010865 sewage Substances 0.000 claims abstract description 4
- 230000001461 cytolytic effect Effects 0.000 claims abstract description 3
- 240000007594 Oryza sativa Species 0.000 claims description 5
- 235000007164 Oryza sativa Nutrition 0.000 claims description 5
- 239000002737 fuel gas Substances 0.000 claims description 5
- 238000010248 power generation Methods 0.000 claims description 5
- 235000009566 rice Nutrition 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 241000196324 Embryophyta Species 0.000 claims description 4
- 244000017020 Ipomoea batatas Species 0.000 claims description 4
- 235000002678 Ipomoea batatas Nutrition 0.000 claims description 4
- 240000000111 Saccharum officinarum Species 0.000 claims description 4
- 235000007201 Saccharum officinarum Nutrition 0.000 claims description 4
- 235000021307 Triticum Nutrition 0.000 claims description 4
- 240000008042 Zea mays Species 0.000 claims description 4
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 claims description 4
- 235000002017 Zea mays subsp mays Nutrition 0.000 claims description 4
- 235000005822 corn Nutrition 0.000 claims description 4
- 241000272525 Anas platyrhynchos Species 0.000 claims description 3
- 241000193830 Bacillus <bacterium> Species 0.000 claims description 3
- 241000287828 Gallus gallus Species 0.000 claims description 3
- 241001494479 Pecora Species 0.000 claims description 3
- 240000006394 Sorghum bicolor Species 0.000 claims description 3
- 235000011684 Sorghum saccharatum Nutrition 0.000 claims description 3
- 239000000463 material Substances 0.000 claims 9
- 244000098338 Triticum aestivum Species 0.000 claims 1
- 239000002361 compost Substances 0.000 claims 1
- 239000003895 organic fertilizer Substances 0.000 abstract description 13
- 230000008901 benefit Effects 0.000 abstract description 7
- 244000144977 poultry Species 0.000 abstract description 7
- 239000002699 waste material Substances 0.000 abstract description 6
- 244000144972 livestock Species 0.000 abstract description 5
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 239000002994 raw material Substances 0.000 abstract description 3
- 241000947228 Bacillus endophyticus Species 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 241000209140 Triticum Species 0.000 description 3
- 229910001385 heavy metal Inorganic materials 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 238000012271 agricultural production Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
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- 238000012360 testing method Methods 0.000 description 2
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- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 241000282414 Homo sapiens Species 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 244000082204 Phyllostachys viridis Species 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 241001148470 aerobic bacillus Species 0.000 description 1
- 239000002154 agricultural waste Substances 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 1
- 244000052616 bacterial pathogen Species 0.000 description 1
- 239000010905 bagasse Substances 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 238000009395 breeding Methods 0.000 description 1
- 230000001488 breeding effect Effects 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000011038 discontinuous diafiltration by volume reduction Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
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- 239000000835 fiber Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000006722 reduction reaction Methods 0.000 description 1
- 238000009270 solid waste treatment Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011573 trace mineral Substances 0.000 description 1
- 235000013619 trace mineral Nutrition 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12P—FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
- C12P5/00—Preparation of hydrocarbons or halogenated hydrocarbons
- C12P5/02—Preparation of hydrocarbons or halogenated hydrocarbons acyclic
- C12P5/023—Methane
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/02—Biological treatment
- C02F11/04—Anaerobic treatment; Production of methane by such processes
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- C05F17/00—Preparation of fertilisers characterised by biological or biochemical treatment steps, e.g. composting or fermentation
- C05F17/20—Preparation of fertilisers characterised by biological or biochemical treatment steps, e.g. composting or fermentation using specific microorganisms or substances, e.g. enzymes, for activating or stimulating the treatment
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- C05F17/00—Preparation of fertilisers characterised by biological or biochemical treatment steps, e.g. composting or fermentation
- C05F17/50—Treatments combining two or more different biological or biochemical treatments, e.g. anaerobic and aerobic treatment or vermicomposting and aerobic treatment
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05F—ORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C, e.g. FERTILISERS FROM WASTE OR REFUSE
- C05F3/00—Fertilisers from human or animal excrements, e.g. manure
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/20—Nature of the water, waste water, sewage or sludge to be treated from animal husbandry
-
- 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
-
- 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
Abstract
The invention discloses a recycling treatment method suitable for agricultural organic solid wastes, which specifically comprises the following steps: (1) collecting crop straws, and crushing to obtain crop straw powder; (2) mixing with livestock and poultry manure uniformly, and then adding anaerobic granular activated sludge for anaerobic fermentation to obtain biogas and biogas residues; wherein the anaerobic granular activated sludge is digested sludge of an anaerobic sewage plant, sludge of a methane tank or putrefactive river sludge; (3) adding mesophilic microorganisms into the biogas residues for aerobic composting to obtain organic fertilizers; wherein the mesophilic microorganism is at least one of Bacillus endophyticus, Sporothrix thermophilus, hydrogenobacterium, Thermus and thermophilic cellulolytic bacteria. The invention takes the crop straws and the livestock and poultry manure as raw materials, and sequentially carries out anaerobic fermentation and aerobic composting to respectively generate the biogas and the organic fertilizer, thereby not only changing waste into valuables, but also reducing the harm to the environment caused by burning the straws, and having good environmental benefit and economic benefit.
Description
Technical Field
The invention relates to the technical field of agricultural waste recycling, in particular to a recycling method suitable for agricultural organic solid wastes.
Background
The agricultural organic solid waste is a general term of waste discharged in agricultural production, agricultural product processing, livestock and poultry breeding industry and rural resident life, and mainly comprises waste bamboo, wood chips, rice straws, wheat straws, bagasse, human and animal excrement and the like. Along with the continuous progress and development of society and the improvement of the quality of the living standard of people, the agricultural organic solid wastes are also continuously increased, which causes huge pollution to the environment and arouses the attention of people. If the waste water cannot be effectively treated, secondary pollution is easily caused, and losses are brought to various aspects such as environment, economy and the like.
At present, the treatment method of agricultural organic solid waste mainly comprises physical treatment, chemical treatment, biological treatment, heat treatment and biochemical treatment. Wherein, the physical treatment means that the structure of the solid waste is changed through concentration or phase change so as to be in a form convenient for transportation, storage, utilization or disposal, and comprises compaction, crushing, sorting and the like; the chemical treatment is to destroy harmful components in the solid waste by a chemical method so as to achieve harmlessness, or convert the harmful components into a state suitable for further treatment and disposal, and comprises oxidation, reduction, neutralization, precipitation, dissolution and the like; the biological treatment is to decompose degradable organic matters in the solid waste by using microorganisms so as to achieve harmless and comprehensive utilization, has the advantages of composting, biogas generation, waste fiber feed conversion, protein conversion and the like which are widely applied, is generally cheaper economically and quite common compared with the chemical treatment, but has longer time required by the treatment process and sometimes unstable treatment efficiency; the heat treatment means that the composition and the structure of the solid waste are destroyed and changed at high temperature, and the purposes of volume reduction and utilization are achieved at the same time, and the method mainly comprises incineration, pyrolysis and the like.
However, the existing agricultural organic solid waste treatment method cannot achieve the effects of not only being ecological and environment-friendly, but also promoting virtuous circle of agricultural production.
Therefore, how to develop a recycling method suitable for agricultural organic solid wastes is a problem that needs to be solved by those skilled in the art.
Disclosure of Invention
In view of the above, the present invention provides a recycling method for agricultural organic solid waste, so as to solve the deficiencies in the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme:
a recycling treatment method suitable for agricultural organic solid wastes specifically comprises the following steps:
(1) collecting crop straws, and crushing to obtain crop straw powder;
(2) uniformly mixing crop straw powder and livestock manure, adding anaerobic granular activated sludge for anaerobic fermentation to obtain biogas and biogas residues, and purifying the biogas to be used as fuel gas or power generation for energy utilization;
wherein the anaerobic granular activated sludge is digested sludge of an anaerobic sewage plant, sludge of a methane tank or putrefactive river sludge;
(3) adding mesophilic microorganisms into the biogas residues for aerobic composting to obtain organic fertilizers, and applying the organic fertilizers as the fertilizers in the field;
wherein the mesophilic microorganism is at least one of Bacillus endophyticus, Sporothrix thermophilus, hydrogenobacterium, Thermus and thermophilic cellulolytic bacteria.
Further, in the step (1), the crop straws are at least one of corn straws, rice straws, sorghum straws, wheat straws, sweet potato straws and sugarcane straws; pulverizing to obtain crop straw with length of 1-2 cm.
The further technical scheme has the beneficial effects that the organic matter content of the selected crop straws is high, the sources are wide, and the price is low.
Further, in the step (2), the livestock manure is at least one of chicken manure, duck manure, pig manure, cow manure and sheep manure, and the water content is 60-70%; the mass ratio of the crop straws to the livestock manure is 1 (0.5-2).
The poultry and livestock manure adopted by the further technical scheme has the beneficial effects that the poultry and livestock manure contains rich organic matters and nutrients such as nitrogen, phosphorus, potassium and the like, and can supply various mineral substances and trace elements such as calcium, magnesium, sulfur and the like required by crops, so that the requirements of the crops on various nutrients in the growth process are met.
Further, in the step (2), the adding mass of the anaerobic granular activated sludge is 10-20%; the anaerobic fermentation temperature is 28-35 deg.C, and the time is 15-25 days.
The beneficial effect of adopting the further technical scheme is that the crop straws and the livestock manure are decomposed and metabolized by various microorganisms under the action of the anaerobic granular activated sludge to finally form combustible mixed gas such as methane, carbon dioxide and the like, thereby realizing reasonable utilization of the methane.
In the step (2), in the step (3), the adding mass of the mesophilic microorganism is 0.1-0.5%; the aerobic composting temperature is 50-65 deg.C, and the time is 10-15 days.
The further technical scheme has the beneficial effects that under the action of mesophilic microorganisms, the aerobic bacteria absorb, oxidize and decompose the organic matters, and kill pathogenic bacteria and weed seeds in the organic matters, so that the organic matters are stabilized.
According to the technical scheme, compared with the prior art, the invention has the following beneficial effects:
the invention takes the crop straws and the livestock and poultry manure as raw materials, and sequentially carries out anaerobic fermentation and aerobic composting to respectively generate the biogas and the organic fertilizer, thereby not only changing waste into valuables, but also reducing the harm to the environment caused by burning the straws, and having good environmental benefit and economic benefit.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
The recycling treatment method suitable for the agricultural organic solid waste specifically comprises the following steps:
(1) collecting corn straws and rice straws, and crushing the corn straws and the rice straws to the length of 1cm to obtain crop straw powder;
(2) uniformly mixing crop straw powder and chicken manure and duck manure with the water content of 65% in a mass ratio of 1:1, adding digested sludge of an anaerobic sewage plant with the mass of 15%, performing anaerobic fermentation at the temperature of 32 ℃ for 20 days to obtain biogas and biogas residues, and purifying the biogas to be used as fuel gas or power generation for energy utilization;
(3) adding 0.2 mass percent of endophytic bacillus and thermophilic sporothrix bacteria into the biogas residues, carrying out aerobic composting for 12 days at the temperature of 55 ℃ to obtain an organic fertilizer, and taking the organic fertilizer as the fertilizer for field application.
Example 2
The recycling treatment method suitable for the agricultural organic solid waste specifically comprises the following steps:
(1) collecting sorghum straws and wheat straws, and crushing to 1cm in length to obtain crop straw powder;
(2) uniformly mixing crop straw powder and pig manure and cow manure with the water content of 60% in a mass ratio of 1:0.5, adding 10% by mass of sludge in a methane tank, performing anaerobic fermentation at the temperature of 28 ℃ for 25 days to obtain methane and methane residues, and purifying the obtained methane to be used as fuel gas or power generation for energy utilization;
(3) adding 0.1 mass percent of hydrogen bacillus and thermus habitus into the biogas residues, and carrying out aerobic composting for 15 days at the temperature of 50 ℃ to obtain an organic fertilizer which is used as a fertilizer for field application.
Example 3
The recycling treatment method suitable for the agricultural organic solid waste specifically comprises the following steps:
(1) collecting sweet potato straws and sugarcane straws, and crushing the sweet potato straws and the sugarcane straws to 2cm in length to obtain crop straw powder;
(2) uniformly mixing crop straw powder and cow dung and sheep dung with water content of 70% in a mass ratio of 1:2, adding 20% of rotten river mud by mass, performing anaerobic fermentation at the temperature of 35 ℃ for 15 days to obtain biogas and biogas residues, and purifying the biogas to be used as fuel gas or power generation for energy utilization;
(3) adding mesophilic microorganisms accounting for 0.5% of the mass of the biogas residues, and carrying out aerobic composting for 10 days at the temperature of 65 ℃ to obtain an organic fertilizer which is used as a fertilizer for field application.
Performance testing
The technical indexes and the heavy metal limit indexes of the organic fertilizer prepared by the recycling treatment method of the agricultural organic solid waste in each of the embodiments 1 to 3 are respectively measured according to the agricultural industry standard NY 525-2012 organic fertilizer of the people's republic of China. The results are shown in tables 1 and 2.
Table 1 examples 1-3 organic fertilizer technical index measurement results
Table 2 examples 1-3 organic fertilizer heavy metal limit index determination results
| Item | Limit index | Example 1 | Example 2 | Example 3 |
| Total arsenic | ≤15 | 3.2 | 3.5 | 3.4 |
| Total mercury | ≤2 | 0.05 | 0.08 | 0.06 |
| Total lead | ≤50 | 4.8 | 4.7 | 4.9 |
| Total cadmium | ≤3 | 0.08 | 0.07 | 0.09 |
| Total chromium | ≤100 | 12 | 16 | 13 |
As can be seen from tables 1 and 2, the technical indexes and the heavy metal limit indexes of the organic fertilizer prepared by the recycling treatment method applicable to the agricultural organic solid wastes in the embodiments 1 to 3 of the invention both meet the corresponding standards of the agricultural industry standard NY 525 and 2012 organic fertilizer of the people's republic of China.
The tests show that the invention takes the crop straws and the livestock and poultry manure as the raw materials, and sequentially carries out anaerobic fermentation and aerobic composting to respectively generate the biogas and the organic fertilizer, thereby not only changing waste into valuable, but also reducing the harm of burning the straws to the environment, and having good environmental benefit and economic benefit.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A recycling treatment method suitable for agricultural organic solid wastes is characterized by comprising the following steps:
(1) collecting crop straws, and crushing to obtain crop straw powder;
(2) uniformly mixing crop straw powder and livestock manure, adding anaerobic granular activated sludge for anaerobic fermentation to obtain biogas and biogas residues, and purifying the biogas to be used as fuel gas or power generation for energy utilization;
wherein the anaerobic granular activated sludge is digested sludge of an anaerobic sewage plant, sludge of a methane tank or putrefactive river sludge;
(3) adding mesophilic microorganisms into the biogas residues for aerobic composting to obtain organic fertilizers, and applying the organic fertilizers as the fertilizers in the field;
wherein the mesophilic microorganism is at least one of endophytic bacillus, thermophilic sporothrix, hydrogenobacterium, Thermus and thermophilic cellulolytic bacteria.
2. The recycling method for agricultural organic solid waste material, according to claim 1, wherein in the step (1), the crop straw is at least one of corn straw, rice straw, sorghum straw, wheat straw, sweet potato straw and sugarcane straw.
3. The recycling method of agricultural organic solid waste material, according to claim 2, wherein in the step (1), the grinding is performed to the length of the crop straw of 1-2 cm.
4. The recycling method of agricultural organic solid waste material according to claim 1, wherein in the step (2), the livestock manure is at least one of chicken manure, duck manure, pig manure, cow manure and sheep manure.
5. The recycling method of agricultural organic solid waste material as claimed in claim 4, wherein in step (2), the water content of the livestock manure is 60% -70%.
6. The recycling method of agricultural organic solid waste material according to claim 5, wherein in the step (2), the mass ratio of the crop straw to the livestock manure is 1 (0.5-2).
7. The recycling method of agricultural organic solid waste material as claimed in claim 1, wherein in the step (2), the added mass of the anaerobic granular activated sludge is 10% -20%.
8. The recycling method of agricultural organic solid waste material, according to claim 7, wherein the temperature of anaerobic fermentation in step (2) is 28-35 ℃ for 15-25 days.
9. The recycling method of agricultural organic solid waste material, according to claim 1, wherein the amount of mesophilic microorganisms added in step (3) is 0.1-0.5% by mass.
10. The recycling method of agricultural organic solid waste material, as claimed in claim 9, wherein the temperature of the aerobic compost in step (3) is 50-65 ℃ for 10-15 days.
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| CN202110956042.2A CN113667699A (en) | 2021-08-19 | 2021-08-19 | Circular treatment method suitable for agricultural organic solid waste |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103204718A (en) * | 2013-04-28 | 2013-07-17 | 么向和 | Comprehensive utilization method of livestock and poultry manures and crop straw resources |
| CN106513414A (en) * | 2016-10-31 | 2017-03-22 | 南开大学 | Process technology for fully recycling municipal domestic waste and producing engineering raw materials from municipal domestic waste and application |
| CN108002954A (en) * | 2017-12-12 | 2018-05-08 | 农业部规划设计研究院 | A kind of agricultural wastes anaerobic-aerobic balances fermentation process |
| WO2019180053A1 (en) * | 2018-03-20 | 2019-09-26 | Alfyma Industrie | Process for repurposing organic household waste |
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2021
- 2021-08-19 CN CN202110956042.2A patent/CN113667699A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103204718A (en) * | 2013-04-28 | 2013-07-17 | 么向和 | Comprehensive utilization method of livestock and poultry manures and crop straw resources |
| CN106513414A (en) * | 2016-10-31 | 2017-03-22 | 南开大学 | Process technology for fully recycling municipal domestic waste and producing engineering raw materials from municipal domestic waste and application |
| CN108002954A (en) * | 2017-12-12 | 2018-05-08 | 农业部规划设计研究院 | A kind of agricultural wastes anaerobic-aerobic balances fermentation process |
| WO2019180053A1 (en) * | 2018-03-20 | 2019-09-26 | Alfyma Industrie | Process for repurposing organic household waste |
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| 段杨慧等: "厌氧发酵和高温好氧堆肥工艺相结合在垃圾处理中的应用", 《科技情报开发与经济》 * |
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