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Combination method of compound microbial agent for degrading kitchen garbage

A technology of compound microbial inoculum and kitchen waste, applied in the field of combination of compound microbial inoculants, can solve the problems of difficult secondary pollution control, long composting time, poor product quality, etc. The effect of the rotting process

Pending Publication Date: 2021-11-16
BEIJING UNION UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in recent years, there are few reports on complex microbial agents that are mature, stable, and have excellent degradation performance, and it is difficult to break through the technical bottlenecks of low humification efficiency, difficult secondary pollution control, long composting time, and poor product quality.

Method used

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  • Combination method of compound microbial agent for degrading kitchen garbage
  • Combination method of compound microbial agent for degrading kitchen garbage
  • Combination method of compound microbial agent for degrading kitchen garbage

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] (1) Composite microbial agent degrades kitchen waste

[0041] Take pretreated kitchen waste 15kg, add sawdust 3kg, adjust moisture content to 68%, C / N ratio to 25, add 5% composite microbial bacterial agent (experimental group-1), the Bacillus subtilis, The volume ratios of streptomyces, yeast, actinomycetes, lactic acid bacteria, pseudomonas, microbacteria, rhizopus oryzae, cellulomonas and aspergillus are 1:1:1:1:1:0:0: 0:0:0, then add 0.75mol MgO and 1.25mol K 2 HPO 4 . The control group only added sawdust without any fungicide. Both the experimental group and the control group were treated for 45 days.

[0042] (2) Detection of pH, EC, GI and ammonia nitrogen

[0043] Sample pH measurement: Weigh 10 g of the sample, add 100 mL of distilled water, shake on a shaker at 150 rpm for 1 h, and let stand for 30 min. The supernatant was centrifuged at 6,000 rpm for 10 min, and the supernatant was measured at room temperature using a pH meter and recorded.

[0044] Sa...

Embodiment 2

[0049] (1) Composite microbial agent degrades kitchen waste

[0050] Weigh 17kg of pretreated kitchen waste, add 3.5kg of sawdust, adjust the water content to 62%, and the C / N ratio to 28, add 10% of the composite microbial agent (experimental group-2), and the Bacillus subtilis formed by it , Streptomyces, Saccharomyces, Actinomycetes, Lactic Acid Bacteria, Pseudomonas, Microbacterium, Rhizopus oryzae, Cellulomonas and Aspergillus are respectively 0:0:0:0:0:1:1 : 1:1:1, then add 1mol MgO and 3mol K 2 HPO 4 . The control group only added sawdust without any fungicide. Both the experimental group and the control group were treated for 45 days.

[0051] (2) Detection of pH, EC, GI and ammonia nitrogen

[0052] Adopt the method identical with embodiment 1 to measure.

[0053] The result is as Figure 1-4 As shown, after 45 days of bacterial agent treatment, the pH increased from 3.5 to 6.5, the EC decreased from 5.8 to 3.8, the ammonia nitrogen decreased from 3600 to 805, ...

Embodiment 3

[0055] (1) Composite microbial agent degrades kitchen waste

[0056] Take pretreated kitchen waste 20kg, add sawdust 5kg, adjust moisture content to 56%, C / N ratio to 30, add 8% composite microbial bacterial agent (experimental group-3), the bacillus subtilis, The volume ratio of streptomyces, yeast, actinomycetes, lactic acid bacteria, pseudomonas, microbacteria, rhizopus oryzae, cellulomonas and aspergillus is 2:2:2:2:2:1:1: 1:1:1, then add 0.6mol MgO and 1.5mol K 2 HPO 4 . The control group only added sawdust without any fungicide. Both the experimental group and the control group were treated for 45 days.

[0057] (2) Detection of pH, EC, GI and ammonia nitrogen

[0058] Adopt the method identical with embodiment 1 to measure.

[0059] The result is as Figure 1-4 As shown, after 45 days of microbial treatment, the pH increased from 3.5 to 7.8, the EC decreased from 5.8 to 3.3, the ammonia nitrogen decreased from 3600 to 495, and the GI increased from 15% to 92%. Co...

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Abstract

The invention relates to a combination method of a compound microbial agent for kitchen garbage degradation. The compound microbial agent comprises bacillus subtilis, streptomyces, saccharomycetes, actinomycetes, lactic acid bacteria, pseudomonas, microbacterium, rhizopus oryzae, cellulomonas and aspergillus. Through optimization and compounding, a combination with relatively high conversion efficiency is obtained. The compound microbial agent is mainly used for converting organic matters such as protein, starch, fat and cellulose in the kitchen garbage into stable products through metabolic activity of microorganisms, and the stable products can be further processed into products such as fertilizers. Herein, the research results are beneficial to harmless, reduction and resourceful treatment of the kitchen waste, and a certain theoretical basis can be provided for efficient large-scale treatment of the kitchen waste.

Description

technical field [0001] The invention belongs to the technical field of microbial degradation of solid waste, in particular to a combination method of a compound microbial agent for degrading kitchen waste. Background technique [0002] Kitchen waste is an important part of municipal solid waste. It mainly includes raw materials used in family life and residues of finished products. It is rich in organic matter, high in carbohydrates, and complete in nitrogen, phosphorus, potassium, calcium and trace elements. Easily degraded by microorganisms. The pollution of kitchen waste to the environment has become very serious. The main hazards are encroaching on a large amount of land, polluting the air, and polluting water bodies. In recent years, non-biological technology and biotechnology are mainly used to treat kitchen waste at home and abroad. Non-biological treatment technologies include incineration and landfill. The one-time investment of incineration is large, the operatin...

Claims

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Application Information

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IPC IPC(8): C12N1/20C12N1/16C12N1/14C05G3/80C05F17/20C05F17/50C12R1/125C12R1/465C12R1/38C12R1/845C12R1/66C12R1/645C12R1/01
CPCC12N1/20C12N1/16C12N1/14C05B7/00C05F17/20C05F17/50C05G3/80C05D5/00C05F5/002C05F9/00C05F11/08Y02W30/40
Inventor 武双程艳玲王晚晴华威
Owner BEIJING UNION UNIVERSITY
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