摘要
目的了解北京市东城区学校内直饮水卫生现况,分析直饮水水质卫生学指标,为制定学校直饮水卫生管理办法提供科学数据。方法查阅东城区疾病预防控制中心2008—2013年受理的76份学校委托直饮水检测报告,选取24所学校,每所学校抽检1台直饮水设备,分别采集直饮水设备出口水和市政末梢水各1份,对结果进行统计分析。结果东城区学校直饮水总体水质良好,全项指标合格率为92%,不合格指标为菌落总数及浑浊度。直饮水与市政水相比,水中总硬度较低,铜较高。软水机相对于热能交换机,能大幅度降低市政水中氯化物、总硬度、氟化物、硫酸盐、铝、溶解性固体的含量,水质得到进一步净化。结论北京市东城区学校直饮水总体水质情况良好,直饮水相比市政水,总硬度降低,铜浓度升高。
Objectives To investigate the quality of direct drinking water in schools at Dongcheng district,Beijing,and analyze sanitary indicators in order to provide scientific data for making policy decisions and health management. Methods Referring to 76 reports for testing the quality of direct drinking water in schools in 2008-2013,twenty-four schools in Dongcheng district were selected; water samples from one direct drinking water fountain and a municipal water tap in each school were collected. Results The quality of direct drinking water in schools at Dongcheng district was generally good,the qualified rate of all indicators was 92%; the unqualified indicators were total bacteria counts and turbidity. The content of copper in direct drinking water was higher and the total hardness in direct drinking water was lower than municipal tap water. Compared with the thermal switch,the water softener could greatly reduce the content of chlorides,total hardness,fluoride,sulfate,aluminum and dissolved solids from municipal tap water,and the water quality was further purified. Conclusions Compared with municipal tap water,the quality of water from direct drinking water fountain in schools was generally good. In direct drinking water,the total hardness was decreased,and the concentration of copper was increased.
出处
《环境卫生学杂志》
2015年第5期435-438,共4页
JOURNAL OF ENVIRONMENTAL HYGIENE
基金
北京市东城区优秀人才培养资助项目(2013WSJ-2)
关键词
学校
直饮水
卫生
软水
检测
school
direct drinking water
hygiene
softener
test
