给水厂耐氯菌风险控制技术研究与应用示范
摘要：针对给水厂面临的以芽孢杆菌为代表的耐氯菌问题,以全面提升饮用水供水水质安全为目标,研发建立了集强化常规处理、深度处理、紫外-氯联合消毒于一体的全流程耐氯菌控制技术,同时兼顾氯化消毒副产物三氯乙醛的控制,并在深圳市某水厂进行工程示范。示范技术应用后,出厂水中耐氯菌(菌落总数)检出率降低了23.50%,总大肠菌群、耐热大肠菌群、大肠埃希氏菌、贾第鞭毛虫、隐孢子虫等微生物指标均未检出,三氯乙醛平均浓度下降了59.33%,实现了微生物指标和消毒副产物指标的协同控制。此外,其他水质指标同时满足《生活饮用水卫生标准》(GB 5749-2006)和深圳市地方标准《生活饮用水水质标准》(DB 4403/T60-2020)的要求。示范技术的开发与应用,可为我国饮用水安全保障提供支撑,并为国内类似水质问题的解决提供借鉴。
关键词：给水厂耐氯菌风险控制应用示范
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[14] 蔡广强,卢小艳,张金松,等．O3-BAC深度处理工艺对有机物及三氯乙醛生成潜能的去除[J]．给水排水,2017,53(12):35-40．
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[16] 蔡广强,张金凤,刘丽君,等．南方某市饮用水中氯化消毒副产物超标风险评估[J]．中国给水排水,2017,33(3):37-41．
[17] GB 5750-2006生活饮用水标准检验方法[S]．
[18] DB 4403/T60-2020生活饮用水水质标准[S].
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[3] 蔡广强,卢小艳,刘丽君,等．深圳市南山水厂氯消毒副产物控制技术研究[J]．给水排水,2018,44(9):15-18．
[4] DING W,JIN W,CAO S,et al.Ozone disinfection of chlorine-resistant bacteria in drinking water[J].Water Research,2019,160:339-349．
[5] JIA S,JIA R,ZHANG K,et al.Disinfection characteristics of Pseudomonas peli,a chlorine-resistant bacterium isolated from a water supply network[J].Environmental Research,2020,185:1-8．
[6] 祝泽兵．供水管网中的耐氯菌群及其耐氯机制研究[D]．哈尔滨：哈尔滨工业大学,2015．
[7] 张国鹏,蒋旗军,王梅芳,等．水厂蜡样芽孢杆菌的灭活工艺研究[J]．给水排水,2018,44(2):39-43．
[8] 周常．净水工艺过程中微生物风险评估与控制技术研究[D]．广州：广州大学,2018．
[9] GB 5749-2006生活饮用水卫生标准[S]．
[10] ZENG F,CAO S,JIN W,et al.Inactivation of chlorine-resistant bacterial spores in drinking water using UV irradiation,UV/Hydrogen peroxide and UV/Peroxymonosulfate:Efficiency and mechanism[J].Journal of Cleaner Production,2020,243:118666．
[11] 蒋旗军,黄慧,王长平,等．常规工艺给水厂中芽孢杆菌及其芽孢时空分布规律[J]．中国给水排水,2018,34(5):10-14．
[12] GALOFRB,ISRAEL S,DELLUNDJ,et al.Aerobic bacterial spores as process indicators for protozoa cysts in water treatment plants[J].Water Science&Technology,2004,50(1):165-172．
[13] 蔡广强,张金松,刘丽君,等．常规处理工艺对有机物及三氯乙醛生成潜能的去除[J]．中国给水排水,2017,33(19):46-50．
[14] 蔡广强,卢小艳,张金松,等．O3-BAC深度处理工艺对有机物及三氯乙醛生成潜能的去除[J]．给水排水,2017,53(12):35-40．
[15] GB 50013-2018室外给水设计标准[S]．
[16] 蔡广强,张金凤,刘丽君,等．南方某市饮用水中氯化消毒副产物超标风险评估[J]．中国给水排水,2017,33(3):37-41．
[17] GB 5750-2006生活饮用水标准检验方法[S]．
[18] DB 4403/T60-2020生活饮用水水质标准[S].
Research and application demonstration of chlorine-resistant bacteria risk control technology in water treatment plant
Abstract: Faceing the problem of chlorine-resistant bacteria represented by bacillus in water treatment plants,the control technology of chlorine-resistant bacteria in the whole process was established,which integrated the enhanced conventional treatment process,advanced treatment process and UV combined with chlorine disinfection process,in order to comprehensively improve the drinking water safety.Meanwhile,chloral hydrate(CH),one of chlorination disinfection byproducts(DBPs),was controlled,and the technology demonstration was carried out in a water plant in Shenzhen.After the demonstration technology was applied,the detected rate of chlorineresistant bacteria(the total number of colonies)in finished water was decreased by 23.5%,and other microbial indicators,including total coliform,heat-resistant coliform,Escherichia coli,Giardia and Cryptosporidium,were not detected.In addition,the average concentration of CH was decreased by 59.33%,and thus the coordinated control of microbial index and DBPs was released.Moreover,other water quality indexes also met the requirements of the Standard for Drinking Water Quality(GB 5749-2006)and the Standard of Drinking Water Quality(DB 4403/T60-2020),the local standard in Shenzhen.The development and application of demonstration technology provide a strong support for the drinking water quality security of China,and provide a reference for the solution of similar water quality problems in China.
Keywords: Water treatment plant; Chlorine-resistant bacteria; Risk control technology; Application demonstration;
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