高层建筑二次供水水质调查  

INVESTIGATION OF WATER QUALITY FROM SECONDARY WATER SUPPLY SYSTEM OF HIGH BUILDINGS

作　　者：汪求真[1] 张超英[1] 鲁晓晴[1] 

机构地区：[1]青岛医学院预防医学教研室,青岛266021

出　　处：《青岛医学院学报》1999年第3期192-193,共2页Acta Academiae Medicinae Qingdao Universitatis

摘　　要：①目的　了解高层建筑二次加压供水水质状况。②方法　采取２２ 处高层建筑二次加压供水水样，分别测定细菌总数、总大肠菌群数、余氯及氨氮等指标，并与一般水网水样检测结果进行比较。③结果　冬春季及夏秋季二次供水水样中的细菌总数、总大肠菌群数及氨氮含量均高于同期一般水网水样，差异有显著性（ｔ＝ ２．５７～２８．６２， Ｐ＜ ０．０５，０．０１）；余氯含量低于同期一般水网水样，差异有显著性（ｔ＝ ２４．５０～３１．５８， Ｐ＜ ０．０１）。夏秋季二次供水水样中细菌总数、总大肠菌群数、氨氮含量高于冬春季（ｔ＝ ２．２４～２４．７２， Ｐ＜ ０．０５，０．０１）。④结论　二次加压供水水质较一般水网水质差。Objective\ To find out water quality of secondary water supply system of high buildings.\ Methods\ Sampling water was taken from sencondary water supply system. Total bacterial count, total coliform group, residual chlorine and ammonia nitrogen were detected respectively.\ Results\ Total bacterial count, total coliform group and ammonia nitrogen of water taken from secondary water supply system in Winter Spring and Summer Autumn were significantly higher than those from normal potable water( t=2.57-28.62,P <0.05, 0.01) ; Residual chlorine was significantly lower than that of the normal drinking water( t=24.50-31.58,P <0.01). Total bacterial count, total coliform group and ammonia nitrogen of secondary water supply system in Summer Autumn were significantly higher than those in Winter Spring( t=2.24-24.72,P <0.05,0.01).\ Conclusion\ Water quality of secondary water supply system was worse than that of normal potable water.\;

关 键 词：二次供水 水污染 消毒 水质 

分 类 号：R123.1[医药卫生—环境卫生学] TU991.25[医药卫生—公共卫生与预防医学]