Composting method and device for reducing abundance of antibiotic resistance genes in livestock and poultry manure

By combining ultra-high temperature aerobic composting with low-voltage pulsed electric field treatment, and utilizing extreme thermophilic bacteria and electric field technology, the problem of the difficulty in reducing the abundance of antibiotic resistance genes in livestock and poultry manure has been solved, achieving efficient and stable ARGs removal effect, which is suitable for large-scale industrial application.

CN121800566APending Publication Date: 2026-04-07GUANGDONG INST OF ECO ENVIRONMENT & SOIL SCI
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Patent Information

Application Number
CN202511505134.3
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-10-21
Publication Date
2026-04-07

AI Technical Summary

Technical Problem

Existing technologies are insufficient to effectively reduce the abundance of antibiotic resistance genes (ARGs) in livestock and poultry manure. Traditional composting methods cannot completely inactivate ARGs host bacteria and intracellular ARGs, leading to ARGs rebound and environmental risks. Furthermore, existing methods are costly, have poor adaptability, and are difficult to promote on a large scale.

Method used

The method of ultra-high temperature aerobic composting combined with low-voltage pulsed electric field treatment is adopted. By adding extreme thermophilic bacteria agents to increase the temperature and destroy the host bacterial cell membrane, the low-voltage pulsed electric field generates electroporation and electrochemical reaction to degrade ARGs.

Benefits of technology

It achieves deep reduction of ARGs, with a removal rate of over 97%, reducing the safety risks of compost products, making it environmentally friendly and suitable for large-scale industrial applications.

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Abstract

The invention relates to the technical field of organic solid waste treatment, and discloses a composting method and device for reducing abundance of antibiotic resistance genes in livestock and poultry manure. The composting method comprises the following steps: mixing livestock and poultry manure with a composting auxiliary material to form a composting material, and then mixing the composting material with an extreme thermophilic microbial agent to obtain a composting raw material; sequentially carrying out ultrahigh-temperature aerobic composting treatment and low-voltage pulsed electric field composting treatment on the composting raw materials to reduce the abundance of antibiotic resistance genes; wherein the extreme thermophilic bacteria agent comprises at least one of brevibacillus brevis, pseudomonas, bacillus subtilis, saccharomonosporum and acinetobacter. According to the composting method provided by the invention, ultrahigh-temperature composting and low-voltage pulsed electric field treatment are innovatively coupled, extremely high removal efficiency is shown on various ARGs such as tetracyclines, sulfonamides and macrolides, the average removal rate can reach 97% or above, and the effect is far better than that of pure ultrahigh-temperature composting or traditional composting.
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