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目的掌握中牟县农村饮水安全工程水质卫生状况及其变化趋势,为农村改水工作提供科学依据。方法 2011-2013年对中牟县农村饮水安全工程基本情况调查,对监测点枯水期和丰水期水质进行监测分析。结果 3年水质合格率为71.50%。3年间枯水期和丰水期、出厂水和末梢水水质合格率无统计学意义。水质合格率:乡镇水厂>村级饮水安全工程;设计供水能力超过1 000 t/d>不到100 t/d>100 t/d~999 t/d;供水覆盖人口超过10 000人>不到1 000人>1 000人~9 999人;微生物指标>感官性状和一般化学指标>毒理指标。不合格指标主要为氟化物,水氟含量与p H值呈正相关,超标水氟含量与井深呈负相关。结论引起中牟县农村饮水安全工程水质不合格的主要指标是氟化物,不合格水质工程主要分布于北乡和东乡,应采取针对性措施改善农村饮水安全工程水质。
Objective To understand the status of water quality and hygiene in rural drinking water safety project in Zhongmou County and its changing trend, and to provide a scientific basis for water diversion in rural areas. Methods A survey of basic situation of rural drinking water safety project in Zhongmu County from 2011 to 2013 was conducted, and the monitoring and analysis of water quality in dry season and wet season of monitoring sites was conducted. Results The qualified rate of water quality in three years was 71.50%. During the three years of dry season and wet season, there was no statistical significance in the qualified rate of water quality of the ex-factory water and the terminal water. Water quality pass rate: township water plant> village drinking water safety project; design water supply capacity of more than 1 000 t / d> 100 t / d> 100 t / d ~ 999 t / d; To 1,000 people> 1,000 to 9,999; Microbial indicators> Sensory traits and general chemical indicators> Toxicological indicators. Fluoride was the main unqualified indicator, and fluorine content in water was positively correlated with p H value. The fluorine content in excess water was negatively correlated with well depth. Conclusions The main indicator of unqualified water quality of rural drinking water safety project in Zhongmou County is fluoride. Unqualified water quality projects are mainly distributed in Beixiang and Dongxiang. Targeted measures should be taken to improve water quality of rural drinking water safety project.