摘要
目的了解红塔区农村集中式供水水质卫生状况,针对存在问题提出改进建议。方法对2008-2011年红塔区农村集中式供水水质监测资料进行统计、分析。结果水质合格率偏低(39.96%),出厂水与末梢水两者之间比较差异无统计学意义;不同水源类型监测,合格率最高的是水库水、井水,最低的是其它类(沟塘水、溪水、水窖水);有消毒设备的水质合格率(94.66%),显著高于无消毒设备的水质合格率(28.88%);丰水期合格率明显低于枯水期;不合格的检验指标中,合格率从高到低依次为耗氧量、肉眼可见物、pH值、铁、锰、色度、浑浊度、耐热大肠菌群、菌落总数、大肠菌群。结论色度、浑浊度、菌落总数、大肠菌群、耐热大肠菌群是影响农村生活饮用水合格率的主要因素,建议加强农村集中式供水的制水规范、卫生管理和水质消毒,保证饮用水安全。
Objective To investigate the hygiene situation of drinking water of centralized water supply in rural area of Hongta District, and to bring forward some improvement advices. Methods We statistically analyzed the monitoring data about water quality of centralized water supply in rural area of Hongta District from 2008 to 2011. Results The qualified rate of water quality was low （39.96 % ）. No statistically significant difference was found between the final water and the tap water. The monitoring results of different types of water sources showed that the qualified rates of reservoir water and well water were the highest, while the qualified rates of water collected from ditch ponds, streams and water cellars were the lowest. The quali- fied rate of water dealt with disinfection and purification equipments （94.66%） was significantly higher than that of water without disinfection and purification treating （28.88%）. The qualified rate of water collected in wet season was significantly lower than that in dry season. Among the unqualified indicators of tests, the qualified rates from high to low in turn were oxygen consumption, visible matter, pH value, iron, manganese, chromaticity, turbidity, thermotolerant coliforms, total bacteria count, and coliform bacteria. Conclusions Chromaticity, turbidity, total bacteria count, coliform bacteria and thermotolerant colif- orm bacteria are the main factors affecting the passing rate of drinking water in rural areas. The results suggest that it is necessary to reinforce the water- producing standard, hygiene management, water disinfection and purification of rural centralized water supply so as to ensure the safety of drinking water.
出处
《实用预防医学》
CAS
2013年第2期188-190,共3页
Practical Preventive Medicine
关键词
农村
集中式
水质
监测
丰水期
枯水期
Rural area
Centralized
Water quality
Monitoring
High flow period
Dry season
