论文部分内容阅读
目的为及时掌握农村饮用水水质,防止经水传播疾病的发生,并为政府及相关部门制定安全饮水工程规划和决策提供科学依据。方法按照《生活饮用水标准检验方法》、《生活饮用水卫生标准》对全县所有农村自来水厂水质进行监测和评价,小型水厂的部分水质指标限值按小型集中式供水评价。结果共检测水样896份,合格762份,合格率85.04%;枯水期水样合格率明显高于丰水期(χ2=34.66,P<0.01)。检测17 032项次,合格率98.91%;不合格项目主要有总大肠菌群、菌落总数、锰、氨氮等8项。结论该县农村集中式供水存在安全隐患,水质微生物指标超标较为普遍,尤其是丰水期,引发介水传染病流行的风险较大。应健全有效协调机制,加大监管力度,供水单位增加水处理设施并保证其正常运行。
The purpose is to timely grasp the quality of drinking water in rural areas to prevent the occurrence of waterborne diseases and provide scientific basis for the government and relevant departments to formulate safe drinking water project planning and decision-making. Methods The water quality of all the rural waterworks in the county was monitored and evaluated in accordance with the Standard Test Method for Domestic Drinking Water and Sanitary Standard for Drinking Water. The limits of some water quality indicators of small waterworks were evaluated according to the small centralized water supply. Results A total of 896 water samples were tested, 762 were qualified, with a pass rate of 85.04%. The passing rate of water samples in dry season was significantly higher than that in wet season (χ2 = 34.66, P <0.01). Test 17 032 times, the pass rate of 98.91%; unqualified projects are the total coliform bacteria, the total number of colonies, manganese, ammonia nitrogen and other eight. Conclusion There is a potential safety hazard in the centralized water supply in rural areas of this county. It is more common that the indicators of water quality exceed the standard, especially in the wet season, and the risk of prevalent water-borne infectious diseases is high. Efforts should be made to improve the effective coordination mechanism, intensify supervision and control, increase the water treatment facilities by water supply units and ensure their normal operation.