【摘要】 目的:探讨二次供水系统中蓄水池(箱)等蓄水设施对水质的影响状况。方法:对2001~2004年滨州市区直接供水与二次供水23项卫生监测指标进行分析。检测方法按GB5750-85《生活饮用水标准检验方法》,评价依据按GB5749-85《生活饮用水卫生标准》。监测指标包括浑浊度、总铁、细菌总数、大肠菌群、氨氮、亚硝酸盐氮、硝酸盐氮。结果:二次供水合格率仅为12·2%,与城市供水管网末梢水水质相比较差异有统计学意义。结论:二次供水污染严重,应引起高度重视。更多还原

【Abstract】 Objective:To research about the effects of pooland other water second provide system instruments on water quality.Methods:23 indexes were analyzed on direct water provide water and second water-provide systems in Binzhou City during 2001 to 2005.check analysis methods were according to GB 5750-85《standard examine methods on drinking water》,and evaluation was according to GB5749-85《the sanitary standards on drinking water》.The indexes including turbidity,total Fe,Escherichia coli,NH₃-N,NO₂-N and NO₃-N et al.Results:The yield rate of secondary water provide water quality was only 12.2%,significantly lower than direct provide water.Conclusion:The secondary water provide systems could cause sever pollution and should be pay more attention.更多还原