Method for treating livestock and poultry breeding waste
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A technology for breeding waste and poultry, which is applied in the field of poultry and livestock waste treatment, can solve the problems that have not been properly solved, heavy metals exceed the standard, and the removal effect of antibiotic resistance genes is limited, so as to improve composting efficiency and shorten composting time Effect
Active Publication Date: 2018-06-22
INST OF ENVIRONMENT & SUSTAINABLE DEV IN AGRI CHINESE ACADEMY OF AGRI SCI
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However, similar to traditional composting and other processes, the removal of antibiotics, antibiotic-resistant bacteria (ARBs) and antibiotic resistance genes (ARGs) in compost
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[0046] Example 1
[0047] In this embodiment, an ectopic fermentation bed is used to process poultry and livestock waste, including 4 fermentation tanks, figure 1 Shown is one of the fermentation tanks, which has 3 sets of electrode plates.
[0048] Corn stalks are used as filler materials, and Bacillus subtilis, Bacillus licheniformis, actinomycetes, etc. are mixed as additive bacterial agents. First, crush the corn stalks into small pieces of 0.5-2.0 cm, and then mix them evenly with the bacterial agent, adjust the initial water content of the filler to 50-60%, and the initial C / N ratio is 20, and pour it into the fermentation bed for ectopic fermentation. Production, and the test began after 4 days of pre-fermentation.
[0049] In the first stage, 7 days before the treatment, the voltage applied at both ends of the tank, the area of the cathode and anode is 1.0m 2 , the distance between poles is 1.0m, and the voltage intensity is 1V / cm; 2A1-2C1 is used as the initial a...
Example Embodiment
[0053] Example 2
[0054] The method of Example 1 and the ectopic fermentation bed equipment are used, the difference is that the first stage of ectopic fermentation treatment does not reverse the electrodes. The resource-based products in the fermentation tank were inspected, and the reduction effects of heavy metals, antibiotics, drug-resistant bacteria, and resistance genes were determined. The results are listed in Table 1.
Example Embodiment
[0055] Example 3
[0056] The method of Example 1 and the ectopic fermentation bed equipment are used, the difference is that the voltage intensities at both ends of the tank body in the first stage and the third stage are respectively 4V / cm. The resource-based products in the fermentation tank were inspected, and the reduction effects of heavy metals, antibiotics, drug-resistant bacteria, and resistance genes were determined. The results are listed in Table 1.
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Abstract
The invention relates to a method for treating livestock and poultry breeding waste. The method comprises the following steps: (1) mixing livestock and poultry breeding waste and supplementary carbonsource substances to obtain a fermentation raw material; (2) performing ectopic fermentation treatment on the fermentation raw material in an ectopic fermentation bed in an external electric field toobtain a fermentation product. According to the method, the electrokinetic repair technology is applied to the ectopic fermentation bed, electrodialysis and electromigration can promote migration andtransportation of substances in the ectopic fermentation bed and promote conversion of antibiotics under actions of anodic oxidation and cathodic reduction, effective removal of resistance genes and resistance bacteria in the livestock and poultry breeding waste is realized, migration and enrichment of heavy metal ions under an electric field are achieved, a good reduction effect on antibiotics, antibiotic resistance bacteria, antibiotic resistance genes and heavy metal pollution in the livestock and poultry breeding waste is achieved while composting efficiency is improved and composting timeis shortened, and finally, a safe livestock and poultry waste recycling product is generated.
Description
technical field [0001] The present disclosure relates to the field of organic waste treatment, in particular, to a method for treating poultry and livestock breeding waste. Background technique [0002] The environmental pollution caused by feces and urine in large-scale livestock and poultry farming is serious. According to relevant data, agricultural non-point source COD and total nitrogen emissions accounted for 43.7% and 57.2% of the national emissions, respectively. [0003] Heterotopic fermentation bed is a new mode of pig manure and urine excrement treatment. This technology can control the manure and urine treatment caused by traditional large-scale pig farms from the source, and plays an important role in the process of treating livestock manure and turning it into organic fertilizer. important role. However, similar to traditional composting and other processes, the removal of antibiotics, antibiotic-resistant bacteria (ARBs) and antibiotic resistance genes (ARGs...
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