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High-efficiency aerobic composting inoculant for livestock and poultry manure and method for aerobic composting thereof

A technology of livestock and poultry manure and aerobic composting, which is applied in the field of environmental protection and comprehensive resource utilization, can solve the problems of reducing the content of available heavy metals, the comprehensive utilization rate is less than 60%, and the loss of nitrogen, so as to reduce the content of available heavy metals, Improve the efficiency of aerobic composting and control the loss of nitrogen

Active Publication Date: 2019-07-19
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In recent years, with the development and promotion of the industrialization and intensification of my country's livestock and poultry breeding industry, the annual output of livestock and poultry manure is huge. According to the data of the Ministry of Agriculture, the current annual production of livestock and poultry manure in my country is about 3.8 billion tons, but the comprehensive utilization rate Less than 60%
[0005] At the same time, the loss of nitrogen in fertilizer is the main reason for the decline of fertilizer fertility. During the process of aerobic composting of poultry and livestock manure, nitrogen will also be lost in various ways, such as NH 3 Volatile and N x O emission, reducing fertilizer efficiency of composting products
Patents CN201810320047.4, CN201710077317.9, CN201310734659.5 all disclose methods for degrading antibiotics in poultry manure, and CN201811633872.6 discloses a heavy metal passivation and nitrogen conservation method; however, aerobic composting is currently used to simultaneously remove antibiotics , resistance genes and reducing the content of effective heavy metals and controlling nitrogen loss have not been reported

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Mix Bacillus licheniformis, Phanerochaete chrysosporium, and Aspergillus niger at a volume ratio of 1:5:5 to prepare an inoculation agent, cut the garden waste into 1 cm after drying, and add it to livestock and poultry manure to adjust C / N to 28, adjust the water content to 55%, add 5% molasses (accounting for the ratio of dry matter mass) to the adjusted livestock and poultry manure, and inoculate the inoculum by 2% (v / w) until the adjusted Carry out aerobic composting in livestock and poultry manure.

[0029] When the temperature is higher than 70°C, ventilate for 1 hour, and the ventilation rate is 0.02m 3 o 2 / (kg organic matter*h), turning once every 6 days, the composting time is 30d, the result shows that the method of embodiment 1 is 68% to the degradation rate of enrofloxacin in livestock and poultry manure, to the degradation rate of ciprofloxacin The degradation rate was 69%, the degradation rate to tetracycline was 75%, the total abundance of resistance g...

Embodiment 2

[0031] Mix Bacillus licheniformis, Phanerochaete chrysosporium, and Aspergillus niger at a volume ratio of 1:4:6 to prepare an inoculant, cut the garden waste into 2 cm after drying, and add it to livestock and poultry manure to adjust C / N to 30, adjust the water content to 60%, add 7% molasses (accounting for the ratio of dry matter mass) to the adjusted livestock and poultry manure, and inoculate the inoculum by 3% (v / w) until the adjusted Carry out aerobic composting in livestock and poultry manure.

[0032] When the temperature is higher than 70°C, ventilate for 0.5h, and the ventilation volume is 0.04m 3 o 2 / (kg organic matter*h), turned once every 6 days, and composting time is 25d, and the result shows, the method for embodiment 2 is 69% to the degradation rate of enrofloxacin in livestock and poultry manure, to the degradation rate of ciprofloxacin The degradation rate was 70%, the degradation rate to tetracycline was 78%, the total abundance of resistance genes (A...

Embodiment 3

[0034] Mix Bacillus licheniformis, Phanerochaete chrysosporium, and Aspergillus niger at a volume ratio of 1:4:6 to prepare an inoculant, cut the garden waste into 1 cm after drying, and add it to livestock and poultry manure to adjust C / N to 30, adjust the water content to 60%, add 6% molasses (accounting for the ratio of dry matter mass) to the adjusted livestock and poultry manure, and inoculate the inoculum by 2% (v / w) until the adjusted Carry out aerobic composting in livestock and poultry manure.

[0035] When the temperature is higher than 70°C, ventilate for 0.5h, and the ventilation volume is 0.04m 3 o 2 / (kg organic matter*h), turned once every 7 days, and composting time is 27d, and the result shows, the method for embodiment 3 is 69% to the degradation rate of enrofloxacin in livestock and poultry manure, to the degradation rate of ciprofloxacin The degradation rate was 71%, the degradation rate to tetracycline was 80%, the total abundance of resistance genes (A...

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Abstract

The invention discloses a high-efficiency aerobic composting inoculant for livestock and poultry manure and a method for aerobic composting thereof. The inoculant is composed of the following bacterial species by following volume proportion: the ratio of Bacillus licheniformis: Phanerochaete chrysosporium: Aspergillus niger is 1:4 to 5:5-6. The aerobic composting comprises the following steps: S1.adding agricultural and forestry waste to the manure of livestock and poultry, adjusting the C / N of livestock manure to 28-30 and the water content being 55%-60%; and S2. adding a sugar source to thelivestock and poultry manure regulated in S1, then adding the above-mentioned inoculant, and uniformly mixing the materials and performing the aerobic composting. After aerobic composting, the degradation of antibiotics in livestock manure is significant, and the content of available heavy metals and resistance genes in livestock manure is greatly reduced, and nitrogen loss is effectively controlled, so that the inoculant has great application prospects.

Description

technical field [0001] The present invention relates to the fields of environmental protection and resource comprehensive utilization, more specifically, to a kind of high-efficiency aerobic composting bacterial agent for livestock and poultry manure and a method for aerobic composting thereof. Background technique [0002] In recent years, with the development and promotion of the industrialization and intensification of my country's livestock and poultry breeding industry, the annual output of livestock and poultry manure is huge. According to the data of the Ministry of Agriculture, the current annual production of livestock and poultry manure in my country is about 3.8 billion tons, but the comprehensive utilization rate Less than 60%. Resource utilization is the main way to solve the pollution of livestock and poultry manure. The resource utilization methods of livestock and poultry manure mainly include fertilizer, feed and energy. However, because there are many poten...

Claims

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Application Information

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IPC IPC(8): C12N1/20C12N1/14C05F17/00C05F15/00C12R1/10C12R1/645C12R1/685
CPCC12N1/20C12N1/14C05F3/00C05F17/80C05F17/20Y02W30/40
Inventor 郑莉许燕滨宁寻安谢光炎刘艳婷
Owner GUANGDONG UNIV OF TECH
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