浙江省临海市洪灾后生活饮用水水质调查分析  

Investigation and analysis of drinking water quality after flood in Linhai City,Zhejiang Province

作　　者：杨晴[1] 侯芳妮[1] 王晓璐 何贤松[1] 王维 YANG Qing;HOU Fang-ni;WANG Xiao-lu;HE Xian-song;WANG Wei(Linhai Municipal Center for Disease Control and Prevention,Linhai,Zhejiang 317000,China)

机构地区：[1]浙江省临海市疾病预防控制中心,浙江临海317000

出　　处：《中国卫生检验杂志》2021年第1期115-117,共3页Chinese Journal of Health Laboratory Technology

摘　　要：目的通过监测水样,了解临海市洪灾后生活饮用水卫生情况,分析风险因素,保证灾区群众饮用水安全。方法在洪水退后的第1 d、3 d、7 d、14 d、21 d、30 d各采集水样若干份,依据GB/T 5750—2006《生活饮用水标准检验方法》对采集的水样进行菌落总数、总大肠菌群、色度、浑浊度、臭和味、肉眼可见物、p H值、耗氧量及游离余氯9项指标的检测。结果共检测水样105份,依据判定标准GB 5749—2006《生活饮用水标准》进行判定,总合格率为23.8%,集中式供水水质合格率优于分散式供水水质合格率,差异有统计学意义(χ^(2)=22.525,P <0.001),从第1 d到第14 d,除总大肠菌群,各项指标合格率均有所上升,在第21 d时又出现了回落。水质不合格项目主要是微生物指标总大肠菌群和消毒剂指标游离余氯,合格率分别为53.3%和31.4%。结论农村饮用水污染需要重视,洪灾后应对饮用水采取相应的消毒措施,确保人民的基本生活用水需要。Objective Through monitoring water samples,the sanitary situation of drinking water after flood in Linhai was understood,and the risk factors were analyzed to ensure the safety of drinking water for people in disaster areas. Methods The samples were collected at the first day,third day,7thday,14thday,21thday and 30thday after the flood,and the flowing items such as total number of colonies,total coliform flora,chroma,turbidity,odor and taste,visible objects,p H,oxygen consumption,and free residual chlorine are be detected according to GB/T 5750—2006 Standards For Drinking Water Quality.Results A total of 105 water samples were tested,according to the GB 5749—2006 Standards For Drinking Water Quality,the total qualified rate is 23. 8%,the qualified rate of centralized water supply was better than that of decentralized water supply,with the differences statistically significant( χ^(2)= 22. 525,P < 0. 001). From the first day to the 14 thday,except for the total coliform flora,the qualified rate of each indicator increased,and it fell again on the 21 stday. The main defective items were mainly microbiological index total coliform group and disinfectant index free residual chlorine,with qualified rates of 53. 3% and31. 4%. Conclusion The pollution of drinking water in rural areas should be paid more attention,the corresponding disinfection measures should be taken to ensure the supply of the basic living water after floods.

关 键 词：临海 洪灾 生活饮用水 

分 类 号：R123.1[医药卫生—环境卫生学]