2016—2018年承德市城市生活饮用水水质状况分析  

Analysis on quality of urban domestic drinking water in Chengde from 2016 to 2018

作　　者：李依霖 王占辉[1,2] 李彩云 赵国良[1] 吴艳玲[1] 韩会强 LI Yi-lin;WANG Zhan-hui;LI Cai-yun;ZHAO Guo-liang;WU Yan-ling;HAN Hui-qiang(Chengde Center for Disease Control and Prevention,Hebei 067000,China)

机构地区：[1]承德市疾病预防控制中心,河北067000 [2]河北省生活饮用水安全检测技术创新中心

出　　处：《医学动物防制》2021年第8期785-787,791,共4页Journal of Medical Pest Control

基　　金：河北省重点研发计划项目(19277711D);承德市科学技术研究与发展计划项目(202002A003)。

摘　　要：目的了解2016—2018年承德市城市生活饮用水水质状况及相关影响因素。方法统计2016—2018年承德市市政水厂、自建水厂出厂水以及具有代表性的末梢水共318份,监测的318份城市生活饮用水检测结果,根据生活饮用水卫生标准(GB 5749—2006)进行评价,结合各相关影响因素用χ^(2)检验比较水样合格率。结果 318份水样中枯水期总合格率92.45%(147/159),高于丰水期总合格率81.13%(129/159)(Fisher确切概率法,P=0.003);2018年枯水期合格率100.00%(50/50),较2017年的83.93%(47/56)高(Fisher确切概率法,P=0.003)。出厂水总合格率89.29%(50/56),末梢水总合格率86.26%(226/262),2018年末梢水合格率95.00%(76/80),较2017年的80.43%(74/92)高(χ^(2)=8.138,P=0.004)。浅井水总合格率87.58%(261/298),深井水总合格率75.00%(15/20),2018年浅井水合格率95.65%(88/92),较2016年的85.29%(87/102)、2017年的82.69%(86/104)高(χ^(2)=5.874,P=0.015;χ^(2)=8.228,P=0.004)。总大肠菌群、耐热大肠菌群、大肠埃希菌和菌落总数的总合格率分别为92.77%(295/318)、99.69%(317/318)、99.37%(316/318)和94.03%(299/318)。硝酸盐氮总合格率为92.14%(293/318),丰水期硝酸盐氮合格率97.48%(155/159),大于枯水期合格率86.79%(138/159),硫酸盐和耗氧量总合格率99.69%(317/318)。结论 2016—2018年承德市城市生活饮用水水质总体良好,微生物指标是影响水质的重要原因。Objective To understand the water quality and related influencing factors of urban domestic drinking water in Chengde City from 2016 to 2018.Methods A total of 318 samples of treated water of municipal water plant and self-built waterworks and representative terminal water in Chengde from 2016 to 2018 were counted, and the evaluations were conducted according to the standards for drinking water quality(GB 5749—2006),the pass rate of water samples was compared by means of χ^(2) test in combination with related factors.Results The total pass rate of 318 water samples in dry season was 92.45%(147/159),being higher than that of 81.13%(129/159) in wet season(Fisher probabilities test, P=0.03),the pass rate in dry season of 2018 was 100.00%(50/50),being higher than that of 83.93%(47/56) in 2017 when compared(Fisher probabilities test, P=0.03).The total pass rate of water delivered was 89.29%(50/56),the total pass rate of terminal water was 86.26%(226/262),the pass rate of terminal water was 95.00%(76/80) in 2018,being higher than that of 80.43%(74/92) in 2017(χ^(2)=8.138,P=0.004).The total pass rate of shallow well water and deep well water was 87.58%(261/298) and 75.00%(15/20) respectively, and the pass rate of shallow well water was 95.65%(88/92) in 2018,being higher than that of 85.29%(87/102) in 2016 and 82.69%(86/104)in 2017(χ^(2)=5.874,P=0.015;χ^(2)=8.228,P=0.004) respectively.The total pass rate of total coliform group, heat-resistant coliform, escherichia coli and total number of colonies were 92.77%(295/318),99.69%(317/318),99.37%(316/318) and 94.03%(299/318) respectively;the total pass rate of nitrate nitrogen was 92.14%(293/318),the pass rate of nitrate nitrogen in wet season was 97.48%(155/159),being higher than that 86.79%(138/159) in dry season period, and the total pass rate of sulfate and oxygen consumption was 99.69%(317/318).Conclusion The quality of urban domestic drinking water in Chengde from 2016 to 2018 is generally good, and microbial indicators are considered to be important reasons for a

关 键 词：城市生活饮用水 水质卫生 理化指标 微生物指标 分析 

分 类 号：R123[医药卫生—环境卫生学]