吉林建筑大学市政与环境工程学院;吉林建筑大学松辽流域水环境教育部重点实验室;吉林省东昇创联建筑工程有限公司;一汽物流有限公司;
针对供水系统耐氯性细菌(Chlorine-resistant bacteria, CRB)带来的水质安全问题,以北方地区某城市供水管网中筛选的耐氯性菌株为研究对象,研究了耐氯性细菌菌株的生化特性、氯消毒和紫外线消毒方式下耐氯性细菌菌群的灭活效果及抗生素抗性。结果显示:1年内经3次加氯筛选得到24株CRB,分为芽孢杆菌、单胞菌和大肠杆菌3类。使用3 mg·L~(-1),6 mg·L~(-1)浓度氯消毒20 min时,3类CRB的灭活效率分别为2.3 lg, 2.4 lg, 2.6 lg和2.6 lg, 2.8 lg, 2.9 lg;当紫外线消毒浓度为80 mJ·cm~(-2)时,CRB的灭活效率分别为0.96 lg, 1.04 lg, 1.12 lg。分离的CRB对青霉素和四环素产生抗性,而对阿奇霉素的抗性较低。北方城市供水系统中CRB对紫外线消毒和氯消毒产生一定的抗性,需要探索多种消毒措施协同控制城市供水系统中微生物,确保城市管网水质的安全。
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基本信息:
DOI:10.20203/j.cnki.2095-8919.2024.06.011
中图分类号:TU991.2
引用信息:
[1]彭举威,孙燕楠,李华南等.北方城市供水管网中耐氯性细菌的生化特性[J].吉林建筑大学学报,2024,41(06):51-56.DOI:10.20203/j.cnki.2095-8919.2024.06.011.
基金信息:
吉林省科技厅项目(20220203010SF,20240404060ZP); 吉林省教育厅科研项目(JJKH20240390KJ); 吉林省住房建设厅科研项目(K20220236); 大学生创新创业项目(S20231019100826)