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[目的]为进一步加强银川市城市饮用水监测工作,逐步建立健全城市饮用水卫生监测网络,给保障城市饮用水卫生安全提供科学依据。[方法]根据相关监测要求,于2008—2011年对银川市城市饮用水进行水质监测,收集、整理银川市2008—2011年城市饮用水卫生监督网络试点水质检验结果,并进行统计分析。[结果]2008—2011年四年共采集水样1222份,合格水样691份,各年度合格率分别为44.74%、51.85%、58.96%、67.78%,差异有统计学意义(χ2=819.643,P<0.01)。银川市不同类型(水厂出厂水、水厂管网末梢水、二次供水、自建水厂出厂水、自建水厂管网末梢水)的水样合格率依次为35.00%、63.53%、55.37%、40.74%、26.15%,差异有统计学意义(χ2=79.433,P<0.01)。不同类型水样,浑浊度(χ2=42.839,P<0.01)、臭和味(χ2=50.883,P<0.01)、铁(χ2=104.446,P<0.01)、锰(χ2=23.864,P<0.01)、氨氮(χ2=354.108,P<0.01)、余氯(χ2=53.272,P<0.01)和菌落总数(χ2=10.719,P<0.05)、总大肠菌群(χ2=16.321,P<0.01)的合格率,差异均有统计学意义。兴庆区、金凤区、西夏区的水质合格率分别为51.56%、61.79%、68.93%,差异有统计学意义(χ2=23.409,P<0.01)。[结论]银川市城市饮用水水质卫生状况不容乐观,应进一步加强水质卫生监测工作。
[Objective] In order to further strengthen the urban drinking water monitoring in Yinchuan, gradually establish and improve the urban drinking water health monitoring network, and provide a scientific basis for ensuring the health and safety of urban drinking water. [Method] According to the requirements of related monitoring, the water quality of urban drinking water in Yinchuan City was monitored from 2008 to 2011, and the results of pilot water quality test of urban drinking water health supervision network in Yinchuan from 2008 to 2011 were collected and analyzed. [Results] A total of 1222 water samples and 691 qualified water samples were collected during the four years from 2008 to 2011. The pass rates in each year were 44.74%, 51.85%, 58.96% and 67.78%, respectively, with significant differences (χ2 = 819.643, P <0.01). The passing rate of water samples of different types (factory water supply of waterworks, peripheral water supply of pipelines of waterworks, secondary water supply, factory water supply of self-built waterworks and peripheral water supply of self-built waterworks network pipelines) were 35.00%, 63.53% 55.37%, 40.74%, 26.15%, the difference was statistically significant (χ2 = 79.433, P <0.01). (Χ2 = 23.446, P <0.01), and manganese (χ2 = 23.864, P <0.01) in different types of water samples with turbidity (χ2 = 42.839, P <0.01) (Χ2 = 16.321, P <0.01), total nitrogen (χ2 = 354.108, P <0.01) The pass rate, the differences were statistically significant. The qualified rate of water quality in Xingqing, Jinfeng and Xixia districts was 51.56%, 61.79% and 68.93% respectively, with significant difference (χ2 = 23.409, P <0.01). [Conclusion] The hygienic condition of urban drinking water in Yinchuan City is not optimistic, so it is necessary to further strengthen the water quality hygienic monitoring.