论文部分内容阅读
目的为了解正阳县生活饮用水卫生状况,提高生活饮用水卫生质量,保障人体健康,同时为相关部门制定改进措施、加强管理提供科学依据。方法根据《河南省生活饮用水卫生监督监测工作方案》要求,按照国家标准对正阳县2014年全县城乡各类生活饮用水进行采样、检测和评价。结果全年共检测各类水样534份,合格439份,总合格率为82.2%。其中枯水期和丰水期的合格率分别为85.8%和78.7%;市政供水、农村饮水安全工程供水、学校供水、二次供水、分散供水水质的合格率分别为97.9%、96.1%、79.8%、88.9%、60.3%;感观性状和一般化学指标、微生物指标、毒理学指标的合格率分别为91.0%、87.5%、95.5%。结论正阳县分散供水不合格的主要指标为微生物指标、硝酸盐和耗氧量,存在有机物污染及饮水消毒设施老旧问题,因此应加强生活饮用水供水管理和监督检测,保证饮用水安全。
Objective To understand the health status of drinking water in Zhengyang County, improve the quality of drinking water health and protect human health, at the same time provide scientific basis for relevant departments to make improvement measures and strengthen management. Methods According to the requirements of “Work Plan of Sanitary Supervision and Surveillance of Domestic Drinking Water in Henan Province”, sampling, testing and evaluation of all kinds of drinking water in urban and rural areas of Zhengyang County in 2014 were conducted according to national standards. Results A total of 534 all kinds of water samples were tested and 439 were qualified, with a total pass rate of 82.2%. Among them, the passing rates in dry season and wet season were 85.8% and 78.7% respectively. The passing rates of municipal water supply, rural drinking water safety project water supply, school water supply, secondary water supply and decentralized water supply were 97.9%, 96.1% and 79.8% respectively, 88.9% and 60.3% respectively. The pass rate of sensory characters, general chemical indicators, microbial indicators and toxicological indicators were 91.0%, 87.5% and 95.5% respectively. Conclusion The main indicators of substandard water supply in Zhengyang County are microbial indicators, nitrate and oxygen consumption, organic pollution and aging drinking water disinfection facilities. Therefore, the management and supervision of domestic drinking water supply should be strengthened to ensure the safety of drinking water.