摘要
目的对2017—2018年北京市朝阳区的生活饮用水水质进行综合评价与分析,为朝阳区生活饮用水水质日常监测和管理提供科学依据。方法选取2017—2018年北京市朝阳区市政水和农村自备井水共936份生活饮用水水样监测数据,运用水质综合指数(WQI)评价法对生活饮用水水质进行评价和分析。结果 2017—2018年朝阳区936份生活饮用水水样的整体合格率为99.89%,WQI为0.33±0.10。2017—2018年共检测648份市政水和288份农村自备井水水样,市政水和自备井水WQI分别为0.35±0.09和0.27±0.08,经非参数检验(Kruskal-Wallis检验),差异有统计学意义(χ~2=183.11,P<0.01)。2017—2018年丰水期和枯水期的农村自备井水的WQI为0.27±0.08和0.26±0.08,经非参数检验,差异有统计学意义(χ~2=5.59,P<0.05)。2017—2018年市政水4个季度的WQI依次为0.30±0.08、0.42±0.07、0.39±0.09、0.31±0.07,经非参数检验,差异有统计学意义(χ~2=195.79,P<0.01)。结论 2017—2018年北京市朝阳区生活饮用水水质总体较好,主要受供水方式、枯丰水期和季度的影响。
Objective To evaluate and analyze the quality of drinking water in Chaoyang District of Beijing from 2017 to 2018,and provide a scientific basis for daily monitoring and management of drinking water quality in Chaoyang District. Methods A total of 936 drinking water sample monitoring data of municipal water and rural self-drilled well water of Chaoyang District from2017 to 2018 were collected, and the water quality index(WQI) evaluation method was used to evaluate and analyze the quality of drinking water. Results The overall qualified rate of 936 drinking water samples in Chaoyang District from 2017 to 2018 was 99.89%, and the WQI was 0.33 ±0.10. 648 municipal water samples and 288 rural self-drilled well water samples were tested from 2017 to 2018, the WQI of municipal water and rural self-drilled well water were 0.35±0.09 and 0.27±0.08 respectively, with statistically significant difference(χ~2=183.11,P<0.01) by non parametric test(Kruskal Wallis test). The WQI of water samples from rural sel-drilled wells during the high-water season and dry season from 2017 to 2018 were 0.27±0.08 and 0.26±0.08 respectively,with statistically significant difference (χ~2=5.59, P<0.05) by non parametric test(Kruskal Wallis test). The WQI of water samples from municipal water in four quarters from 2017-2018 were 0.30 ±0.08, 0.42 ±0.07, 0.39 ±0.09, 0.31 ±0.07 respectively, with statistically significant difference (χ~2=195.79, P<0.01) by non parametric test(Kruskal Wallis test). Conclusion The quality of drinking water in Chaoyang District of Beijing from 2017 to 2018 is generally good, which is mainly affected by the mode of water supply, dry and high water periods and seasons.
作者
王雷
赵艳玲
张美云
WANG Lei;ZHAO Yan-ling;ZHANG Mei-yun(General office,Chaoyang Center for Disease Control and Prevention,Beijing,100021,China)
出处
《职业与健康》
CAS
2020年第15期2089-2092,共4页
Occupation and Health
关键词
生活饮用水
水质综合指数评价法
水质监测
Drinking water
Water quality index method
Water quality surveillance
