CN112358350A - Harmless treatment method for breeding waste - Google Patents
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- CN112358350A CN112358350A CN202011263541.5A CN202011263541A CN112358350A CN 112358350 A CN112358350 A CN 112358350A CN 202011263541 A CN202011263541 A CN 202011263541A CN 112358350 A CN112358350 A CN 112358350A
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05D—INORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C; FERTILISERS PRODUCING CARBON DIOXIDE
- C05D1/00—Fertilisers containing potassium
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05B—PHOSPHATIC FERTILISERS
- C05B7/00—Fertilisers based essentially on alkali or ammonium orthophosphates
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
- C05G3/20—Mixtures of one or more fertilisers with additives not having a specially fertilising activity for preventing the fertilisers being reduced to powder; Anti-dusting additives
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- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
- C05G3/80—Soil conditioners
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G5/00—Fertilisers characterised by their form
- C05G5/10—Solid or semi-solid fertilisers, e.g. powders
- C05G5/12—Granules or flakes
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G5/00—Fertilisers characterised by their form
- C05G5/20—Liquid fertilisers
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Abstract
The invention discloses a harmless treatment method for cultivation waste, which comprises the following steps: (1) collecting breeding waste, including but not limited to one or more of breeding animal excrement and urine, dead animal carcasses, slaughter waste and food waste; (2) placing the breeding waste in a methane tank, and fermenting and sterilizing to obtain biogas slurry; (3) adding 1-40% of humic acid, 1-20% of potassium hydroxide or 1-10% of sodium hydroxide in percentage by mass into the biogas slurry, and adjusting the pH value of the biogas slurry to 7-11; (4) carrying out solid-liquid separation on the biogas slurry obtained in the step (3) to respectively obtain a solid separated matter and a liquid separated matter; (5) treating the solid isolate to obtain an organic fertilizer, and (5') treating the liquid isolate to obtain different types of humic acid-containing water-soluble organic fertilizers. The scheme can perform harmless treatment and resource utilization on all wastes generated by cultivation, and also reduces the risk of environmental pollution caused by the cultivation wastes.
Description
Technical Field
The invention relates to an environment-friendly treatment method, in particular to a harmless treatment method for cultivation waste.
Background
Under the multiple influence of factors such as international trade protection and epidemic situation, the pork price continuously rises. The pig breeding is developed vigorously, and the problem that the masses of people are difficult to eat pork is solvedThe problem of (2) is a very slow civil life. Intensive and large-scale cultivation is the most effective method for reducing cost and controlling epidemic situations. However, scale cultivation can bring about a series of problems. For example: raising one million pigs for one year will produce at least 40 million tons of pig manure and 80 million tons of pig urine. The pig manure and urine mixed waste contains 6.6% of organic matter, 0.38% of nitrogen (N) and phosphorus (P)2O5)0.33%, potassium (K)2O) 0.78%; each gram of pig manure also contains about 83 ten thousand of Escherichia coli, about 69 ten thousand of enterococcus and a certain amount of parasitic ova such as roundworms.
At present, the treatment mode adopted by each large-scale farm is as follows: wood sawdust or rice husk is used as padding, the water-soaked pig manure is pumped into the padding for fermentation, and the water in the pig manure is evaporated by utilizing the heat generated by the fermentation. And finally, selling the decomposed product as an organic fertilizer. The method has the following disadvantages:
1. the water content in the mixture of the pig urine and the pig manure is up to more than 93 percent. The organic fertilizer production process has three times of fermentation, and the temperature of each fermentation can be increased from 10 ℃ to 50-80 ℃ and is 65 ℃ on average. One ton of organic fertilizer fermented to 65 ℃ generates heat =1000 × (65-10) × 3 times about 165000 kilojoules. Conversion of 10 c water to steam per kg requires 2260 kilojoules of heat for evaporation. The water which can be evaporated for each ton of organic fertilizer produced is 165000 ÷ 2260=73 kg. Under the condition of not adding any padding, million tons of pig manure can only produce 10 million tons of qualified organic fertilizer with the water content of lower than 30 percent, only 0.73 million tons of water can be evaporated, and only 2.19 or 3.65 million tons of water can be evaporated even if three or even five times of padding is added; even if the padding does not contain tax, the padding can contain 30% of water after being made into the organic fertilizer, the total water taken away is only about 15 ten thousand tons, and 75% of urine water is not subjected to harmless treatment and resource utilization.
2. The wood sawdust is a raw material for processing the board, and the sale price of a common furniture factory is as high as 200 yuan per ton. The rice hull is a raw material for processing feed, and the selling price is about 800 yuan/ton; both the sawdust and the rice hull are made of light materials, have large volume and high transportation cost. The fermentation method using wood sawdust or rice husk as the padding increases the investment cost and wastes social resources. Meanwhile, the two raw materials can be thoroughly decomposed by microorganisms in more than one year, a large fermentation field is needed, and not only is land resources wasted, but also fermentation time is wasted.
3. Wood sawdust and rice hulls are used as padding for fermentation, and harmful organisms such as escherichia coli, enterococcus, roundworm eggs and the like in excrement cannot be completely killed due to insufficient fermentation temperature of the method. The organic fertilizer produced by the method can not meet the index requirements of NY525-2012 organic fertilizer standard. Once the fertilizer is applied to soil, diseases and insect pests can be caused to crops, and the crop yield is seriously influenced. And the risk of infectious diseases and parasitic diseases for people and livestock around farmlands using the organic fertilizer is brought, and the total requirements of the national healthy Chinese 2030 programming are not met.
4. The nitrogen, phosphorus and potassium contents of the wood sawdust and the rice hull are low, so that the nitrogen, phosphorus and potassium contents of the organic fertilizer produced by the method can not meet the index requirements of NY525-2012 organic fertilizer standards.
5. The moisture content in the organic fertilizer produced by the method is far higher than 30 percent. Can not reach the water content index specified in NY525 and 2012 organic fertilizer standards.
6. Because the method is open fermentation, although special zymophyte is added, the existence and the multiplication of other microorganisms cannot be avoided. Other non-special strains also generate harmful gases such as ammonia gas, skatole, carbon dioxide, sulfur dioxide and the like in the process of living, breeding and decomposing pig manure, seriously pollute the environment and even possibly cause that the quality of surrounding air cannot reach the indexes specified in the air pollutant Integrated emission Standard DB50/418-2016 and the foul odor pollutant emission Standard GB 14554-93.
Due to the problems of the existing treatment method, the large-scale breeding development of the live pigs is seriously hindered, and the price and the supply of pork are influenced.
Therefore, the technicians in the field are dedicated to develop a harmless treatment method for the aquaculture waste, which reduces the environmental pollution and maximizes the utilization of resources.
Disclosure of Invention
In view of the above-mentioned defects in the prior art, the present invention provides a method for harmless treatment of cultivation waste, which can effectively recycle the cultivation waste and reduce environmental pollution.
In order to realize the aim, the invention provides a harmless treatment method of cultivation waste, which comprises the following steps: (1) collecting one or more of breeding waste including but not limited to feces and urine of breeding animals, carcasses of dead animals, slaughter waste and food waste; (2) placing the breeding waste in a methane tank, and fermenting and sterilizing to obtain biogas slurry; (3) adding 1-40% of humic acid, 1-20% of potassium hydroxide or 1-10% of sodium hydroxide by mass into the biogas slurry, and adjusting the pH value of the biogas slurry to 7-11; (4) carrying out solid-liquid separation on the biogas slurry obtained in the step (3) to respectively obtain a solid separated matter and a liquid separated matter; (5) treating the solid isolate to obtain an organic fertilizer, and (5') collecting the liquid isolate, and then carrying out guniting and granulation treatment to obtain solid particles of humic acid-containing water-soluble organic fertilizer, or carrying out chemical compounding treatment to obtain liquid humic acid-containing water-soluble organic fertilizer, or carrying out atomization drying treatment to obtain powder humic acid-containing water-soluble fertilizer.
Further, in the step (2), the cultivation waste is fed into the methane tank and then added with anaerobic bacteria with the mass percentage of 0.1-10%, and the mixture is sealed and fermented at normal temperature to obtain the biogas slurry.
Further, in the step (5), adding the solid isolate into the coal furnace slag according to the mass percentage of 10-20%, uniformly stirring, and then sending into a drying device for drying until the water content is lower than 30%, so as to obtain the humic acid organic fertilizer.
Further, in the step (5'), the spraying granulation treatment is to add 1-10% by mass of a suspension bonding auxiliary agent to the liquid isolate, add 20-80% of neutral or alkaline nitrogen, phosphorus, potassium and trace elements to obtain a slurry of the flowing type full water-soluble humic acid water-soluble fertilizer, heat the slurry to 60-80 ℃, pump the slurry into a spraying granulation device for spraying granulation, and dry the fertilizer subjected to spraying granulation by a drying device until the water content is lower than 3%, so as to obtain the solid particle humic acid-containing water-soluble organic fertilizer.
Further, in the step (5'), the chemical compounding treatment is to add 1 to 30% of diammonium hydrogen phosphate, 1 to 30% of potassium hydroxide, 1 to 80% of urea, 1 to 60% of potassium chloride or 1 to 30% of potassium sulfate, 0.1 to 10% of zinc sulfate, 0.1 to 10% of ferrous sulfate, 0.1 to 10% of boric acid, 0.1 to 5% of polycarboxylate dispersant and 0.1 to 5% of disodium ethylenediaminetetraacetate to the liquid isolate in percentage by mass, stir uniformly, stand for 24 hours, filter to remove precipitates and impurities, and obtain the liquid humic acid-containing water-soluble organic fertilizer.
Further, in the step (5'), the atomization drying treatment is to add 1-10% by mass of a suspension binding aid to the liquid isolate, add about 20-80% of neutral or alkaline nitrogen, phosphorus, potassium and trace elements to prepare a slurry of the mobile full-water-soluble humic acid water-soluble fertilizer, heat the slurry to 60-80 ℃, pump the slurry into an atomization drying device for atomization drying, and obtain the powdery humic acid-containing water-soluble organic fertilizer when the water content is lower than 3% by atomization drying.
Further, the coal slag is crushed to be more than 20 meshes.
Further, the dust produced by the apparatus of steps (1) to (5) and (5 ') is spray-dedusted by the liquid isolate of step (5').
Further, the portion of the coal slag is derived from the coal slag produced by the apparatus in steps (1) to (5) and (5').
The invention has the beneficial effects that: the invention not only can completely carry out harmless treatment and resource utilization on all wastes generated by cultivation, but also reduces the risk of environmental pollution caused by the cultivation wastes; meanwhile, the using amount of the fertilizer is greatly saved, the investment cost of agricultural production is further reduced, the soil quality is improved, and the yield and the quality of agricultural products are improved. The implementation of the invention can generate huge social and economic benefits for livestock and poultry breeding and agricultural planting.
Drawings
FIG. 1 is a process flow diagram of a harmless treatment method for aquaculture waste according to the invention;
FIG. 2 is a flow chart of a method of treating a liquid isolate according to the present invention.
Detailed Description
As shown in figures 1 and 2, the invention provides a harmless treatment method for aquaculture waste, and the specific implementation mode is as follows:
example one
The invention provides a harmless treatment method for cultivation waste, which comprises the following steps:
(1) collecting the breeding waste comprises one or more of, but not limited to, breeding animal excrement and urine, dead animal bodies, slaughter waste and food waste.
(2) Placing the breeding waste in a methane tank, adding anaerobic bacteria with the mass percent of 0.1-10% into the methane tank, sealing, fermenting and sterilizing at normal temperature for 30 days to obtain the biogas slurry.
(3) Adding 1-40% of humic acid, 1-20% of potassium hydroxide or 1-10% of sodium hydroxide by mass into the biogas slurry, and adjusting the pH value of the biogas slurry to 7-11;
(4) and (4) carrying out solid-liquid separation on the biogas slurry obtained in the step (3) to respectively obtain a solid separated matter and a liquid separated matter.
(5) Adding 10-20% of solid separated matter into coal slag according to the mass percentage, crushing the coal slag to more than 20 meshes, uniformly stirring, and then sending into a drying device for drying until the water content is lower than 30%, thus obtaining the multi-element humic acid organic fertilizer rich in humic acid, organic matters, nitrogen, phosphorus and potassium, calcium oxide, magnesium oxide, silicon oxide, sulfur and other medium and trace elements.
(5') carrying out guniting and granulating treatment on the liquid isolate, wherein the guniting and granulating treatment is to add 1-10 per mill of suspension bonding auxiliary agent in percentage by mass into the liquid isolate, the suspension bonding auxiliary agent is polycarboxylate, then add 20-80% of neutral or alkaline nitrogen, phosphorus and potassium and trace elements to obtain slurry of the flowing type full-water-soluble humic acid water-soluble fertilizer, heat the slurry to 60-80 ℃, pump the slurry into guniting and granulating equipment for guniting and granulating, and dry the guniting and granulating fertilizer by drying equipment until the water content is lower than 3% to obtain the solid particle humic acid-containing water-soluble organic fertilizer.
Wherein the dust generated by the apparatus of steps (1) to (5) and (5 ') is spray-dedusted by the liquid isolate of step (5').
Wherein the portion of the coal slag is derived from the coal slag produced by the apparatus of steps (1) to (5) and (5').
Example two
The invention provides a harmless treatment method for cultivation waste, which comprises the following steps:
(1) collecting the breeding waste comprises one or more of, but not limited to, breeding animal excrement and urine, dead animal bodies, slaughter waste and food waste.
(2) Placing the breeding waste in a methane tank, adding anaerobic bacteria with the mass percent of 0.1-10% into the methane tank, sealing, fermenting and sterilizing at normal temperature for 30 days to obtain the biogas slurry.
(3) Adding 1-40% of humic acid, 1-20% of potassium hydroxide or 1-10% of sodium hydroxide by mass into the biogas slurry, and adjusting the pH value of the biogas slurry to 7-11;
(4) and (4) carrying out solid-liquid separation on the biogas slurry obtained in the step (3) to respectively obtain a solid separated matter and a liquid separated matter.
(5) Adding 10-20% of solid separated matter into coal slag according to the mass percentage, crushing the coal slag to more than 20 meshes, uniformly stirring, and then sending into a drying device for drying until the water content is lower than 30%, thus obtaining the multi-element humic acid organic fertilizer rich in humic acid, organic matters, nitrogen, phosphorus and potassium, calcium oxide, magnesium oxide, silicon oxide, sulfur and other medium and trace elements.
(5') carrying out chemical compounding treatment on the liquid isolate, wherein the chemical compounding treatment is to add 1-30% of diammonium hydrogen phosphate, 1-30% of potassium hydroxide, 1-80% of urea, 1-60% of potassium chloride or 1-30% of potassium sulfate, 0.1-10% of zinc sulfate, 0.1-10% of ferrous sulfate, 0.1-10% of boric acid, 0.1-5% of polycarboxylate dispersing agent and 0.1-5% of disodium ethylenediamine tetraacetic acid into the liquid isolate according to the mass percentage, uniformly stirring, standing for 24 hours, and filtering to remove precipitates and impurities to obtain the liquid humic acid-containing water-soluble organic material.
Wherein the dust generated by the apparatus of steps (1) to (5) and (5 ') is spray-dedusted by the liquid isolate of step (5').
Wherein the portion of the coal slag is derived from the coal slag produced by the apparatus of steps (1) to (5) and (5').
EXAMPLE III
The invention provides a harmless treatment method for cultivation waste, which comprises the following steps:
(1) collecting the breeding waste comprises one or more of, but not limited to, breeding animal excrement and urine, dead animal bodies, slaughter waste and food waste.
(2) And placing the breeding waste in a methane tank, adding anaerobic bacteria with the mass percent of 0.1-10% into the methane tank, sealing and fermenting at normal temperature for 30 days to obtain the biogas slurry.
(3) Adding 1-40% of humic acid, 1-20% of potassium hydroxide or 1-10% of sodium hydroxide by mass into the biogas slurry, and adjusting the pH value of the biogas slurry to 7-11;
(4) and (4) carrying out solid-liquid separation on the biogas slurry obtained in the step (3) to respectively obtain a solid separated matter and a liquid separated matter.
(5) Adding 10-20% of solid separated matter into coal slag according to the mass percentage, crushing the coal slag to more than 20 meshes, uniformly stirring, and then sending into a drying device for drying until the water content is lower than 30%, thus obtaining the multi-element humic acid organic fertilizer rich in humic acid, organic matters, nitrogen, phosphorus and potassium, calcium oxide, magnesium oxide, silicon oxide, sulfur and other medium and trace elements.
(5') carrying out atomization drying treatment on the liquid isolate, wherein the atomization drying treatment is carried out by adding 1-10 per mill of suspension bonding auxiliary agent in mass percent into the liquid isolate, the suspension bonding auxiliary agent is polycarboxylate, then adding about 20-80% of neutral or alkaline nitrogen, phosphorus and potassium and trace elements to prepare slurry of the flowing type full water-soluble humic acid water-soluble fertilizer, heating the slurry to 60-80 ℃, pumping the slurry into atomization drying equipment for atomization drying, and obtaining the powdery humic acid-containing water-soluble organic fertilizer when the water content is lower than 3% by atomization drying.
Wherein the dust generated by the apparatus of steps (1) to (5) and (5 ') is spray-dedusted by the liquid isolate of step (5').
Wherein the portion of the coal slag is derived from the coal slag produced by the apparatus of steps (1) to (5) and (5').
The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.
Claims (9)
1. A harmless treatment method for cultivation waste is characterized by comprising the following steps:
(1) collecting breeding waste, including but not limited to one or more of breeding animal excrement and urine, dead animal carcasses, slaughter waste and food waste;
(2) placing the breeding waste in a methane tank, and fermenting and sterilizing to obtain biogas slurry;
(3) adding 1-40% of humic acid, 1-20% of potassium hydroxide or 1-10% of sodium hydroxide in percentage by mass into the biogas slurry, and adjusting the pH value of the biogas slurry to 7-11;
(4) carrying out solid-liquid separation on the biogas slurry obtained in the step (3) to respectively obtain a solid separated matter and a liquid separated matter;
(5) treating the solid separated substance to obtain organic fertilizer,
(5') collecting the liquid isolate, and performing guniting and pelleting treatment to obtain a solid particle humic acid-containing water-soluble organic fertilizer, or performing chemical compounding treatment to obtain a liquid humic acid-containing water-soluble organic fertilizer, or performing atomization drying treatment to obtain a powder humic acid-containing water-soluble organic fertilizer.
2. The harmless treatment method of the aquaculture waste as claimed in claim 1, which is characterized in that: in the step (2), the cultivation waste is fed into the methane tank and then added with anaerobic bacteria with the mass percentage of 0.1-10%, and the fermentation is carried out at the sealed normal temperature, so as to obtain the biogas slurry.
3. The harmless treatment method of the aquaculture waste as claimed in claim 1, which is characterized in that: in the step (5), the solid isolate is added into the coal furnace slag according to the mass percentage of 10-20%, and the mixture is uniformly stirred and then sent into a drying device to be dried until the water content is lower than 30%, so that the humic acid organic fertilizer is obtained.
4. The harmless treatment method of the aquaculture waste as claimed in claim 1, which is characterized in that: in the step (5'), the spraying granulation treatment is to add 1-10 per mill of suspension bonding auxiliary agent in mass percent to the liquid isolate, then add 20-80% of neutral or alkaline nitrogen, phosphorus, potassium and trace elements to obtain a slurry of the flowing type full water-soluble humic acid water-soluble fertilizer, heat the slurry to 60-80 ℃, then pump the slurry into a spraying granulation device for spraying granulation, and dry the fertilizer subjected to spraying granulation by a drying device until the water content is lower than 3%, thus obtaining the solid particle humic acid-containing water-soluble organic fertilizer.
5. The harmless treatment method of the aquaculture waste as claimed in claim 1, which is characterized in that: in the step (5'), the chemical compounding treatment is to add 1-30% of diammonium hydrogen phosphate, 1-30% of potassium hydroxide, 1-80% of urea, 1-60% of potassium chloride or 1-30% of potassium sulfate, 0.1-10% of zinc sulfate, 0.1-10% of ferrous sulfate, 0.1-10% of boric acid, 0.1-5% of polycarboxylate dispersant and 0.1-5% of disodium ethylenediaminetetraacetate into the liquid isolate according to the mass percentage, stir uniformly, stand for 24 hours, filter and remove precipitates and impurities, and thus the liquid humic acid-containing water-soluble organic fertilizer is obtained.
6. The harmless treatment method of the aquaculture waste as claimed in claim 1, which is characterized in that: in the step (5'), the atomization drying treatment is to add 1-10 per mill of polycarboxylate suspension binding auxiliary agent in mass percent into the liquid isolate, add about 20-80% of neutral or alkaline nitrogen, phosphorus, potassium and trace elements to prepare slurry of the flowing type full water-soluble humic acid water-soluble fertilizer, heat the slurry to 60-80 ℃, pump the slurry into atomization drying equipment for atomization drying, and obtain the powder humic acid-containing water-soluble organic fertilizer when the water content is lower than 3%.
7. The harmless treatment method of the aquaculture waste as claimed in claim 2, which is characterized in that: the coal slag is crushed to be more than 20 meshes.
8. The harmless treatment method of the aquaculture waste as in any one of the claims 1 to 7, which is characterized in that: the dust generated by the apparatus of steps (1) to (5) and (5 ') is spray-dedusted by the liquid isolate of step (5').
9. The harmless treatment method of the aquaculture waste as claimed in claim 3, which is characterized in that: the said cinder fraction is derived from the cinder produced by the apparatus of steps (1) to (5) and (5').
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| CN116120129A (en) * | 2023-01-10 | 2023-05-16 | 扬州大学 | Preparation method and application of organic biological fertilizer for rapidly curing newly reclaimed soil |
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