论文部分内容阅读
目的了解温岭市集中式供水卫生状况,为提高农村饮用水卫生质量提供依据。方法按照GB/T 5750—2006《生活饮用水标准检验方法》,对温岭市70家集中式供水单位进行采样检测,参照GB 5749—2006《生活饮用水卫生标准》进行评价。结果温岭市70家集中式供水覆盖102.81万人,占全市总人口的84.50%;采用完全处理工艺的水厂仅占15.71%(11/70),覆盖人口93.60万(91.04%)。2015—2016年检测水样1 528份,合格652份,总合格率为42.67%。微生物指标合格率较低,菌落总数为57.97%,总大肠菌群为54.28%,耐热大肠菌群67.34%;游离氯合格率仅为48.58%。水源水、出厂水、末梢水合格率分别为37.63%、39.25%、46.90%;市级、镇级、村级水厂水合格率分别为92.37%、71.62%、32.09%;完全处理水、消毒处理水、无处理水合格率分别为75.14%、33.04%、27.69%;水库水、山塘水、溪水和河水合格率分别为64.94%、31.42%、29.70%、22.06%。结论温岭市农村饮用水微生物指标合格率较低,镇、村级水厂水合格率较低,消毒设施缺乏管理。
Objective To understand the centralized sanitation of water supply in Wenling and provide the basis for improving the hygiene quality of drinking water in rural areas. Methods According to GB / T 5750-2006 Standard Test Method for Domestic Drinking Water, samples were collected from 70 centralized water supply units in Wenling City and evaluated according to GB 5749-2006 Standard for Drinking Water Quality. Results The centralized water supply of Wenling City covered a total of 1,028,100 people, accounting for 84.50% of the total population of the city. Only 15.71% (11/70) of the plants were treated with complete treatment and the population covered 936,000 (91.04%). A total of 1 528 samples of water samples were tested during 2015-2016, with a passing rate of 652, with a total pass rate of 42.67%. The passing rate of microbial indicators was lower, with 57.97% of total colonies, 54.28% of total coliforms and 67.34% of heat-resistant coliforms. The passing rate of free chlorine was only 48.58%. The passing rate of water source, factory water and terminal water were 37.63%, 39.25% and 46.90% respectively. The water passing rates of municipal, township and village water plants were 92.37%, 71.62% and 32.09%, respectively; The qualified rates of treated water and untreated water were 75.14%, 33.04% and 27.69% respectively. The passing rates of reservoir water, mountain water, stream water and river water were 64.94%, 31.42%, 29.70% and 22.06% respectively. Conclusion The qualified rate of microbial indicators of drinking water in rural areas of Wenling is low, the qualified rate of water in township and village water plants is low, and the lack of management of disinfection facilities.