南水北调前后北京市朝阳区市政水水质比较  

Comparison of municipal water quality before and after the south-to-north water diversion project in Chaoyang district,Beijing

作　　者：赵艳玲[1] 张美云[1] 郭春城[1] 吕鸥[1] 王富嵩[1] ZHAO Yah-ling;ZHANG Mei-yun;GUO Chun-cheng;LV Ou;WANG Fu-song(Chaoyang District Center for Disease Control and Prevention,Beijing 100021,China)

机构地区：[1]北京市朝阳区疾病预防控制中心,北京100021

出　　处：《中国卫生检验杂志》2018年第19期2411-2413,2416,共4页Chinese Journal of Health Laboratory Technology

摘　　要：目的了解南水北调前后北京市朝阳区市政水水质变化,为朝阳区安全供水提供科学依据。方法收集朝阳区2013年-2016年市政末梢水监测数据,对南水北调前后各水质指标进行描述性分析,同时使用叠加型综合水质指数法对市政水水质做综合比较。结果南水北调前(2013年-2014年)监测市政末梢水631件,合格率为98. 57%,南水北调后(2015年-2016年)监测市政末梢水648件,合格率为100. 00%。色度、浑浊度、氯化物、硫酸盐、溶解性总固体、总硬度、耗氧量、氟化物、硝酸盐的检测值南水北调后下降(P <0. 05),pH值、铁、三氯甲烷、四氯化碳的检测值南水北调后升高(P <0. 05)。微生物指标的检测值南水北调前后差异无统计学意义。南水北调前后综合水质指数WQI的中位数分别为4. 31和4. 32,经检验差异无统计学意义(P> 0. 05)。结论南水北调前后北京市朝阳区市政水的部分水质指标有变化,但综合水质无明显差异。Objective To study the quality changes of municipal water in Chaoyang district,Beijing before and after the south-to-north water diversion project,so as to provide scientific basis for the water supply safety in Chaoyang district.Methods The monitoring data of municipal tap water in Chaoyang district was collected from 2013 to 2016,and descriptive analysis was performed on each water index. Meanwhile,the comprehensive water quality index were compared before and after the south-to-north water diversion project. Results 631（2013-2014） and 648（2015-2016） municipal tap water samples were tested before and after the south-to-north water diversion project,the qualified rates were 98. 57% and 100. 00%,respectively. The test results of chromaticity,turbidity,chloride,sulfate,total dissolved solids,total hardness,oxygen consumption,fluoride and nitrate decreased after the south-to-north water diversion project（P〈0. 05）. The test results of pH value,iron,chloroform and carbon tetrachloride increased after the south-to-north water diversion project,and there was no statistical significance on the difference in the microbial indexes（P〈0. 05）. The median water quality index（WQI） was respectively 4. 31 and 4. 32 before and after the project,which had no statistical significance on the difference（P〈0. 05）.Conclusion Some water indexes of municipal water in Chaoyang district of Beijing had changed after the south-to-north water diversion project,but there was no significant difference in comprehensive water quality before and after the project.

关 键 词：南水北调 市政水 水质 

分 类 号：R123.1[医药卫生—环境卫生学]