论文部分内容阅读
目的掌握四川省农村饮水安全工程卫生状况,为农村改水工作提供科学依据。方法根据全国爱卫办《农村饮水安全工程水质卫生监测方案》要求对农村供水工程进行调查,并按《生活饮用水卫生标准》对枯、丰水期水质进行检测。结果监测的1958个工程中,地面水以水库、溪水和江河水为主,地下水以深井为主。水样检测完成率为86.49%,有2 290份水样合格,合格率为33.81%。其中出厂水合格率为34.48%,末梢水合格率为33.12%;出厂水枯水期好于丰水期,差异有统计学意义(2χ=9.06,P<0.01);枯水期与丰水期末梢水水质无统计学意义(P>0.05),19项检测指标中微生物指标合格率较低,其余指标合格率均大于90%;消毒剂余留量出厂水合格率为23.43%,末梢水合格率为34.26%。结论农村饮水安全工程水处理工艺不完善,尤为突出的是无消毒设施,水质合格率较低,以微生物超标为主。
Objective To understand the sanitary status of rural drinking water safety project in Sichuan Province and provide scientific basis for water diversion in rural areas. Methods The rural water supply project was investigated in accordance with the requirements of the National Ai Wei Office “Rural Drinking Water Safety Project Water Quality Hygiene Monitoring Program”, and the water quality in dry and wet season was tested in accordance with “Sanitary Standard for Drinking Water”. Results Of the 1958 projects monitored, surface water was dominated by reservoirs, stream water and river water, while groundwater was dominated by deep wells. The completion rate of water samples was 86.49%, with 2,290 water samples passing the pass rate of 33.81%. The passing rate of the ex-factory water was 34.48%, the pass rate of the extremity water was 33.12%; the ex-factory water was better than the wet-dry period in the dry season, the difference was statistically significant (2χ = 9.06, P <0.01) Statistical significance (P> 0.05), the 19 indicators in the microbiological indicators pass rate is low, the remaining indicators pass rate were greater than 90%; disinfectant leaving factory water pass rate was 23.43%, the end of the pass rate of 34.26% . Conclusion The water treatment technology of rural drinking water safety project is not perfect, especially the non-disinfection facilities are notable, and the qualified rate of water quality is low, with the microorganisms exceeding the standard.