论文部分内容阅读
目的了解长沙县开展农村环境综合治理后,生活饮用水水质动态变化。方法 2009-2011年连续对长沙县的集中式供水和分散式供水水质进行检测。结果 2009-2011年共检水样1 289份,合格907份,合格率70.4%,各年度合格率比较差异有统计学意义(P<0.01),2011年水样合格率最高;出厂水和末梢水的不合格指标锰差异有统计学意义(P<0.01);集中式供水和分散式供水九项不合格指标之间差异有统计学意义(P<0.01);丰水期和枯水期不合格项目菌落总数、总大肠菌群、锰之间差异有统计学意义(P<0.01)。结论长沙县进行农村环境综合治理后,生活饮用水合格率逐年上升,取得显著成效;农村生活饮用水受微生物污染严重,锰含量高,应扩大集中式供水范围,提高自来水的普及率;加大对丰水期水质的监测和管理;加大对排污企业的监管和处罚力度,水厂加强对锰的处理,确保居民饮水安全。
Objective To understand the dynamic changes of drinking water quality after the comprehensive management of rural environment in Changsha County. Methods Continuous water supply and decentralized water quality in Changsha County was tested during 2009-2011. Results A total of 1 289 water samples were collected from 2009 to 2011, 907 were passed, with a passing rate of 70.4%. The passing rate of each year was significantly different (P <0.01), and the highest passing rate of water samples was in 2011; (P <0.01). There was significant difference between the nine unqualified indicators of centralized water supply and decentralized water supply (P <0.01). In the wet season and the dry season unqualified items The total number of colony, total coliforms, manganese difference was statistically significant (P <0.01). Conclusion After the comprehensive management of rural environment in Changsha County, the passing rate of drinking water has risen year by year, and achieved remarkable results. Drinking water in rural areas is seriously polluted by microorganisms and has high manganese content. The scope of centralized water supply should be expanded to increase the popularization rate of tap water. Monitoring and management of water quality during the peak period; intensifying the supervision and punishment of the sewage companies, strengthening the treatment of manganese in waterworks and ensuring the safety of drinking water for residents.