南水北调前后北京市石景山区市政水水质比较  

Comparison of municipal tap water quality before and after the South-to-North Water Diversion Project in Shijingshan district,Beijing city

作　　者：杨博[1] 苏领彦[1] 徐得月[1] 王明良[1] 云水英[1] 闫云峥[1] 郭媛媛 赵晓艳[1] 王玮 翟萌萌 YANG Bo;SU Ling-yan;XU De-yue;WANG Ming-liang;YUN Shui-ying;YAN Yun-zheng;GUO Yuan-yuan;ZHAO Xiao-yan;WANG Wei;ZHAI Meng-meng(Occupational and Environmental Health Section,Shijingshan District Center for Disease Control and Prevention,Beijing100043,China)

机构地区：[1]北京市石景山区疾病预防控制中心职业与环境卫生科,北京100043

出　　处：《预防医学论坛》2023年第6期423-426,共4页Preventive Medicine Tribune

基　　金：2021年度北京市重大疫情防治重点专科项目(京卫医[2021]135号)。

摘　　要：目的 了解南水北调前后北京市石景山区市政水水质变化,为进一步改善石景山区水质提供依据。方法 收集2018年4月、2021年8月北京市石景山区在两个区域南水北调通水前后的市政末梢水监测点数据。以该两个区域分别于2018年4月、2021年8月通水前为南水北调前,通水后为南水北调后。对南水北调前后34项水质指标进行描述性分析,使用迭加型综合水质指数(WQI)对市政水水质做综合比较。结果 监测北京市石景山区南水北调前市政末梢水287件,合格285件,合格率为99.30%;监测南水北调后市政末梢水157件,合格率为100.00%,差异无统计学意义(χ^(2)=0.542,P>0.05)。南水北调后检测值下降的指标为锰、锌、氯化物、硫酸盐、溶解性总固体、总硬度、硒、氟化物、硝酸盐、四氯化碳、汞(P<0.05),南水北调后pH值、铝、耗氧量、阴离子合成洗涤剂、三氯甲烷、砷、铬的检测值升高(P<0.05)。南水北调前后WQI的中位数分别为6.88和4.96,差异有统计学意义(Z=14.81,P<0.05)。结论 南水北调后北京市石景山区末梢水水质整体呈现优化趋势。Objective To understand the quality changes of municipal tap water in Shijingshan district,Beijing city before and after the South-to-North Water Diversion Project,so as to provide basis for further improving water quality in Shijingshan district.Methods The data of municipal terminal water monitoring points before and after the South-to-North Water Diversion Project in Shijingshan district of Beijing city were collected.The 2 areas were connected to south water in April 2018 and August 2021 respectively,before this time was considered before the South-North Water Diversion,after this time was considered after the South-North Water Diversion.Thirty-four water quality indicators were descriptively analyzed before and after the South-to-North water diversion,and a comprehensive comparison of municipal water quality was made using an iterative composite water quality index(WQI).Results A total of 287(2018-2021)and 157(2018-2021)municipal tap water samples were tested before and after the South-to-North Water Diversion Project,the qualified rates were 99.30%and 100.00%,respectively,which had no statistical significance on the difference(P>0.05).The test results of manganese,zinc,chloride,sulfate,soluble total solids,total hardness,selenium,fluoride,nitrate,carbon tetracloride and mercury decreased after the South-to-North Water Diversion Project(P<o.05).The test results of pH value,aluminum,oxygen consumption,anionic detergent,trichloromethane,arsenic,and chromium increased after the Southto-North Water Diversion Project,and the difference was statistically significant(P<0.05).The median water quality index(WQI)was respectively 6.88 and 4.96 before and after the project,with statistically significant difference(Z=14.81,P<0.05).Conclusion The overall quality of municipal tap water in Shijingshan district showed an optimization trend after the South-to-North Water Diversion Project.

关 键 词：南水北调 水质 综合水质指数 市政水 

分 类 号：X832[环境科学与工程—环境工程] TU991.25[建筑科学—市政工程]