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目的了解济南市城市生活饮用水的水质状况。方法对济南市2012年市政供水(水源水、出厂水、末梢水和二次供水)和自备井(自建水厂)水(水源水、出厂水和末梢水)水质监测资料进行统计分析。结果 2012年济南市市生活饮用水的总体合格率为87%,市政供水合格率为89.9%,自备井水合格率为73.8%。自备井水样合格率低于市政供水,差异有统计学意义(χ2=20.417,P<0.01)。与市政供水比较,自备井水样中氯化物、硫酸盐、氮氧化物、菌落总数、大肠菌群等合格率均较低,差异有统计学意义(P<0.01)。结论应高度重视济南市自备井类供水安全问题,自备井出厂水和末梢水合格率较低,水质卫生状况有待改善,应加强自备水厂的监管。
Objective To understand the water quality of urban drinking water in Jinan City. Methods The water quality monitoring data of municipal water supply (source water, factory water, peripheral water and secondary water supply) and self-prepared water wells (source water, outlet water and peripheral water) of Jinan in 2012 were statistically analyzed. Results In 2012, the overall pass rate of domestic drinking water in Jinan was 87%, that of municipal water supply was 89.9%, and that of self-provided well water was 73.8%. The qualified rate of self-prepared water sample was lower than that of municipal water supply, with significant difference (χ2 = 20.417, P <0.01). Compared with municipal water supply, the qualified rate of chloride, sulfate, nitrogen oxide, total number of colony and coliform bacteria in self-prepared well water samples was lower, with statistical significance (P <0.01). Conclusion It is necessary to attach great importance to the safety of water supply for self-provided wells in Jinan City. The qualification rate of bottled water and peripheral water in self-prepared wells is low, and the sanitary conditions of water quality need to be improved. Supervision of self-provided water plants should be strengthened.