【摘要】 目的为摸清直管公共场所饮用二次供水卫生状况。方法采取现场调查和实验分析相结合方法。结果二次供水水质Fe、大肠菌群含量超标率显著高于饮用直接市政供水的末梢水 ;二次供水游离余氯含量不合格率达54.55 %。结论二次供水设施陈旧 ,设计不合理 ,受地质结构的影响更多还原

【Abstract】 Objective To Cenderstand the sanitation status of secondary drinking water supply system of public places. Methoods The sanitation of secondary drinking water supply system was investigated by on_site survey method and the sanitary quality of water samples were determined. Results The over_standard rates contents of Fe and total coliformz of water samples of secondary water supply system significantly increased compared with the related levels of tap water of municipal water supply. The unqualified rate of free residual chorine of water sample from secondary water supply system reached 54.55%. Conclusions The equipments for secondary water supply were obsolete and unretional design. The sanitary quality of secondary water supply was also affected by geological structure easily.更多还原