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目的了解湖南省农村集中式供水微生物污染状况,探讨有效防治措施,为改善农村集中式供水水质提供依据。方法按国家有关水质检验标准对2011年湖南省93个县(区)2 006处农村集中式供水点的饮用水水质进行监测,统计分析不同条件对水质微生物指标的影响。结果 4 012份农村集中式供水末梢水微生物指标合格率为40.28%,不同水处理工艺、水源类型的集中式供水微生物指标差异有统计学意义(P<0.001),枯水期微生物指标合格率优于丰水期(P<0.001),菌落总数与浑浊度呈正相关。结论微生物指标合格率与集中式供水水处理工艺、水源类型等多种因素有关,提示要提高农村集中式供水水质,应完善水质净化工艺,加强水厂卫生管理,提高水源防护力度,同时在农村进一步普及卫生健康教育。
Objective To understand the status of microbial contamination of centralized water supply in rural areas of Hunan Province and to explore effective prevention and treatment measures to provide the basis for improving the quality of centralized water supply in rural areas. Methods The drinking water quality of 2,006 rural centralized water supply points in 93 counties (districts) of Hunan Province in 2011 was monitored according to the national water quality inspection standards. The influence of different conditions on the indicators of water quality was analyzed statistically. Results The qualified rate of microbes in 4 012 rural centralized water supply terminals was 40.28%. There was significant difference (P <0.001) between the concentration of different water treatment technologies and water sources in the centralized water supply. The passing rate of microbial indicators in dry season was better than that of the abundance Water period (P <0.001), the total number of colonies and turbidity was positively correlated. Conclusion The passing rate of microbial indicators is related to many factors such as centralized water supply treatment process and water source type. It suggests that in order to improve the quality of centralized water supply in rural areas, the water purification process should be improved, the sanitary management of waterworks strengthened and the protection of water sources strengthened. At the same time, Further popularize health and health education.