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Method for promoting maturing process of aerobic compost and improving compost quality

An aerobic composting and decomposing technology, which is applied in the field of fermented composting and organic waste resource utilization, can solve the problems of polluted soil, heavy metal content exceeding the standard, and the toxic effect of fermenting microorganisms, and achieve high cation exchange capacity, large specific surface area, The effect of catalyzing the formation and accumulation of humic substances

Pending Publication Date: 2022-03-22
SOUTH UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The reason is that the heavy metal content in fly ash often exceeds the standard, which not only pollutes the soil, but also may have a toxic effect on the fermentation microorganisms during the fermentation and composting process.

Method used

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  • Method for promoting maturing process of aerobic compost and improving compost quality
  • Method for promoting maturing process of aerobic compost and improving compost quality
  • Method for promoting maturing process of aerobic compost and improving compost quality

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Corn stalks, chicken manure and slurry-state decomposing-promoting mineral particles were used as raw materials for fermentation in a 100L fermenter indoors. First, mix the slurry-state decomposing-promoting mineral granular minerals with corn stalks, then add a certain quality of chicken manure, and adjust the carbon-nitrogen ratio to 42. Then add fermentation bacteria liquid (1L / fresh material), and further add appropriate amount of water to adjust the moisture content to about 60%. Take no decomposing-promoting mineral particles as the control group (CK), add 5% decomposing-promoting mineral particles (accounting for 5% of the fresh weight of the total material) as test 1 (T1), add 10% decomposing-promoting minerals Pellets (10% of the fresh weight of the total material) are test 2 (T2). The fermentation period is 41 days. Detect the nitrogen content of the initial mixture and the fermented and decomposed products, as shown in Table 1 below; and monitor the germina...

Embodiment 2

[0055] Rice bran, pig manure and powdered maturity-promoting mineral granules are used as raw materials for fermentation in a 100L fermenter indoors. First, mix the powdery decomposing-promoting mineral particles with rice bran, then add a certain quality of pig manure, and adjust the carbon-nitrogen ratio to 35. Then add fermentation bacteria liquid (1L / fresh material), and further add appropriate amount of water to adjust the moisture content to about 60%. Take no decomposing-promoting mineral particles as the control group (CK), and add 10% decomposing-promoting mineral particles (accounting for 10% of the fresh weight of the total material) as test 1 (T1). The fermentation period is 50 days, and the changes in the germination index are monitored during the process, such as Figure 7 shown.

[0056] Depend on figure 2 It can be seen that the changing trends of the two are basically consistent, and the germination index continues to increase with the fermentation. In co...

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Abstract

The invention discloses a method for promoting the aerobic composting maturing process and improving the composting quality, which comprises the following steps: performing aerobic composting fermentation maturing on a mixture of an organic material and maturing-promoting mineral particles, the maturing-promoting mineral particles comprise mineral particles separated from coal or coal gangue before combustion or chemical conversion, the chemical conversion comprises coal pyrolysis, coal gasification, coal liquefaction, coal dry distillation or coal coking. The method provided by the invention can promote the aerobic composting process and improve the composting quality.

Description

technical field [0001] The invention belongs to the field of resource utilization of organic waste, in particular to the technical field of fermentation and composting. Background technique [0002] With the rapid development of agriculture in our country, the pollution of agricultural waste has become increasingly prominent. Agricultural waste mainly includes three categories: crop straw, agricultural product processing waste and livestock and poultry manure. According to statistics, my country produces about 4 billion tons of livestock and poultry manure, about 940 million tons of crop straw, and about 580 million tons of agricultural product processing waste every year. Straw returning directly to the field will cause soil diseases and have a toxic effect on crop seedlings, resulting in crop yield reduction; straw burning will increase environmental pollution and is one of the causes of smog. The large amount of hydrogen sulfide, alcohols, phenols and ammonia benzene pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05F17/10C05F17/20C05G1/00B03D1/02
CPCC05D3/02C05F17/10C05F17/20B03D1/025C05D5/00C05D9/00C05D9/02C05F3/00C05F11/00C05F11/08C05F5/002Y02W30/40
Inventor 刘科王欣王悦李俊国吴昌宁杜春祥
Owner SOUTH UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA
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