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| 复合菌剂对土霉素菌渣好氧堆肥腐熟及微生物群落结构影响 | |
| 引用本文： | 陈赛男, 钟为章, 牛建瑞, 秦学, 宁志芳, 李月. 复合菌剂对土霉素菌渣好氧堆肥腐熟及微生物群落结构影响[J]. 环境工程学报, 2022, 16(8): 2672-2681. doi: 10.12030/j.cjee.202203122 |
| 作者姓名： | 陈赛男 钟为章 牛建瑞 秦学 宁志芳 李月 |
| 作者单位： | 1.河北科技大学环境科学与工程学院，石家庄 050018; 2.河北省污染防治生物技术实验室，石家庄 050018 |
| 基金项目： | 国家自然科学基金青年科学基金资助项目（51708170）；河北省自然科学基金资助项目（B2021208067） |
| 摘 要： |  针对抗生素菌渣中抗生素残留难处理的问题，采用好氧堆肥法将其制成有机肥料，以实现其无害化处理及资源化利用。通过将复合菌剂添加到好氧堆肥体系中，研究其对堆体理化性质、肥效、毒性和微生物群落的影响。结果表明，添加复合菌剂最高温度可达70.55 ℃，比对照组高温期延长了5 d，减少了氮源流失，有机质降解率提高了5.56%，土霉素降解率高达98.86%，使堆肥产品达到安全水平。  此外，复合菌剂提高了堆肥中放线菌门(Actinobacteria)和厚壁菌门（Firmicutes）的相对丰度，与堆体升温正相关的嗜热菌属(Thermophilic bacteria genera)丰度显著增加(P<0.01)，而致病细菌相对丰度下降。细菌群落相关性分析结果表明，接种菌剂既增加了微生物活性，降低了细菌群落的复杂度，又为优化建立新的和更加健康的堆肥细菌群落奠定了基础。本研究可为抗生素降解菌渣在堆肥中的应用提供参考。  |
| 关 键 词： | 土霉素菌渣 好氧堆肥 复合菌剂 土霉素降解 微生物群落 |
| 收稿时间： | 2022-03-18 |
Effect of compound bacterial agent on maturity and microbial community structure of oxytetracycline residue aerobic composting |
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| CHEN Sainan, ZHONG Weizhang, NIU Jianrui, QIN Xue, NING Zhifang, LI Yue. Effect of compound bacterial agent on maturity and microbial community structure of oxytetracycline residue aerobic composting[J]. Chinese Journal of Environmental Engineering, 2022, 16(8): 2672-2681. doi: 10.12030/j.cjee.202203122 | |
| Authors: | CHEN Sainan ZHONG Weizhang NIU Jianrui QIN Xue NING Zhifang LI Yue |
| Affiliation: | 1.School of Environmental Science and Engineering, Hebei University of Science and Technology, Shijiazhuang 050018, China; 2.Biotechnology Laboratory of Pollution Prevention and Control of Hebei Province, Shijiazhuang 050018, China |
| Abstract: | In order to solve the problem that it is difficult to deal with antibiotic residue, aerobic composting method is used to make it into organic fertilizer to realize its harmless treatment and resource utilization. The effects of compound bacteria on physical and chemical properties, fertilizer efficiency, toxicity and microbial community of aerobic composting system were studied by adding compound bacterial agent to aerobic composting system in this study. The results showed that the highest temperature of adding compound bacteria was 70.55 ℃, which was 5 days longer than that of CK group, the loss of nitrogen source was reduced, the degradation rate of organic matter was increased by 5.56%, and the degradation rate of oxytetracycline was as high as 98. 86%, which made the composting products reach the safe level. In addition, the relative abundance of actinomycetes (Actinobacteria) and thick-walled bacteria (Firmicutes) in composting was increased, and the abundance of thermophilic bacteria (Thermophilic bacteria genera) positively related to the temperature of compost was significantly increased, while the relative abundance of pathogenic bacteria decreased. The results of correlation analysis of bacterial community showed that inoculation not only increased microbial activity and reduced the complexity of bacterial community, but also laid a foundation for optimizing the establishment of new and healthier composting bacterial community. This study can provide a reference for the application of antibiotic-degrading bacterial residue in composting. |
| Keywords: | oxytetracycline residue aerobic composting compound bacterial agent oxytetracycline degradation microbial community |
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