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Method for treating and utilizing agricultural solid waste through aerobic high-temperature hydrolysis and fermentation

A high-temperature hydrolysis and agricultural technology, applied in agriculture, bio-organic part treatment, application, etc., can solve environmental disasters, improper disposal and other problems, and achieve the effects of environmental protection and safety in the production process, optimal adjustment and control, and simple production process

Inactive Publication Date: 2011-09-07
INST OF SOIL SCI CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, at the same time, with the large-scale development of the breeding industry, livestock and poultry manure has become another important source of pollution in rural areas, and livestock and poultry manure contains pathogenic organisms, and improper disposal may cause greater environmental disasters

Method used

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  • Method for treating and utilizing agricultural solid waste through aerobic high-temperature hydrolysis and fermentation

Examples

Experimental program
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Effect test

Embodiment 1

[0025] A method for treating and utilizing agricultural solid waste by aerobic high-temperature hydrolysis and fermentation. The sheared and crushed crop straw is mixed with livestock and poultry manure at a weight ratio of 1:6, and the liquid and solid components in the mixture are separated by pressing, and the solid residue obtained by pressing is soaked Squeeze again to separate the liquid and solid components; after mixing the squeezed juice obtained in the previous step twice, adjust the pH with acetic acid or lime water, the pH range is 4.5, and inoculate 0.1% activated sludge of the weight of the squeezed mixed juice (activated sludge takes Sludge from the aerobic pool of the urban sewage treatment plant), the mixed juice is hydrolyzed and fermented under the condition of hot air at 40°C, the internal temperature of the liquid is controlled at 30°C, the fermentation cycle is 1 day, and then vacuum concentrated and cooled to obtain the compound microbial bacterial agent p...

Embodiment 2

[0027] A method for treating and utilizing agricultural solid waste by aerobic high-temperature hydrolysis and fermentation. The sheared and crushed crop straw is mixed with livestock and poultry manure at a weight ratio of 5:2, and the liquid and solid components in the mixture are separated by pressing, and the solid residue obtained by pressing is soaked Squeeze again to separate the liquid and solid components; after mixing the squeezed juice obtained in the previous step twice, adjust the pH with acetic acid or lime water, the pH range is 8.5, and inoculate 0.5% activated sludge of the weight of the squeezed mixed juice (activated sludge takes Sludge from the aerobic pool of the urban sewage treatment plant), the mixed juice is hydrolyzed and fermented under the condition of hot air at 70°C, the internal temperature of the liquid is controlled at 60°C, the fermentation cycle is 10 days, and then vacuum concentrated and cooled to obtain the compound microbial bacterial agent...

Embodiment 3

[0029]A method for treating and utilizing agricultural solid waste by aerobic high-temperature hydrolysis and fermentation. The sheared and pulverized crop straw is mixed with livestock and poultry manure at a weight ratio of 1:1, the liquid and solid components in the mixture are separated by pressing, and the solid residue obtained by pressing is soaked Squeeze again to separate the liquid and solid components; after mixing the squeezed juice obtained in the previous step twice, adjust the pH with acetic acid or lime water, the pH range is 7.5, and inoculate 0.2% activated sludge of the weight of the squeezed mixed juice (activated sludge takes Sludge from the aerobic pool of the urban sewage treatment plant), the mixed juice is hydrolyzed and fermented under the condition of hot air at 55°C, the internal temperature of the liquid is controlled at 40°C, the fermentation period is 1-10 days, and then vacuum concentrated and cooled to obtain a compound microbial agent Product: ...

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Abstract

The invention relates to a method for treating and utilizing agricultural solid waste through aerobic high-temperature hydrolysis and fermentation, which comprises the following treatment steps: a, mixing shorn and crushed crop straws with livestock / poultry dung, squeezing the mixture to carry out liquid-solid separation, soaking the solid residue obtained in the first squeezing procedure, and further squeezing to carry out liquid-solid separation; b, mixing the liquids obtained in the two squeezing procedures in the step a, inoculating with active sludge, hydrolyzing and fermenting the mixed liquid in the presence of hot air for a fermentation period of 1-10 days, carrying out vacuum concentration, and cooling to obtain a compound microbial inoculum product; and c, hydrolyzing and fermenting the squeezed residue obtained in the step a in the presence of hot air, drying in the presence of hot air, cooling, and bagging to obtain the low-humification stable-state carbon source organic substance product. By fully using a large amount of agriculturally-produced crop straws and large-scale produced livestock / poultry dung, the method can be used for recycling multiple kinds of agricultural organic waste, thereby changing the waste into valuables, and reducing the possible secondary environment pollution.

Description

technical field [0001] The invention belongs to the technical field of agricultural solid waste treatment and utilization, in particular to an aerobic high-temperature hydrolysis fermentation treatment and utilization technology of agricultural solid waste, and relates to a method for processing and recycling mixed crop straw and livestock manure. Background technique [0002] Existing technology: Agricultural solid waste such as mixed straw manure is an important component of rural garbage and one of the important causes of non-point source pollution. In fact, agricultural solid waste such as mixed straw manure contains rich organic matter and a certain amount of nutrients such as nitrogen, phosphorus and potassium, and is an important source of biomass fertilizer. Taking the Dianchi Lake Basin as an example, the annual output of agricultural solid waste such as various crop stalks and livestock and poultry manure reached more than 3 million tons, of which more than 1 mil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05F17/00
CPCY02W30/40
Inventor 吴永红颜蓉姬红利李运东杨林章方炎明
Owner INST OF SOIL SCI CHINESE ACAD OF SCI
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