住宅顶层储水池水质卫生学调查及评价

HYGIENIC SURVEY AND EVALUATION OF WATER QUALITY IN CISTERNS ON THE TOP OF RESIDENT HIGH BUILDING

对某市住宅顶层36个储水池进行了卫生调查,并对其中8个储水池的水质进行了检测,以同楼底层的自来水管末梢水作对照进行比较,结果显示:储水池水除氨氮外,其余指标均符合水质卫生标准,但同底层自来水管末梢水比较.水温、pH、“三氮”、耗氧量,总固体、铁、锌均略高于末梢水,余氯低于末梢水.并对余氯低的可能原因,进行了讨论.

Hygienic survey of 36 cisterns water quality on the top of high resident building was conducted in the municipality, of which the water quality of 8 cisterns was randomly chosen for detection, taking the graund floor tap water (of the same building )as control for comparasion. The results showed that all the detecied items were in accordance with that of the control except ammonia nitrogen,. but the water temperature. PH. nitrite mtrogen nitrate nitrogen,COD TS.iron and Zinc in the cistern water were a little bit higher than that of the corresponding control while cistern water residual chlorine was lower. Possible reasons for the low residual chlorine are discussed.