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为了探讨二次供水卫生的科学管理方法 ,对合肥市 10年来的监督监测资料进行分析。结果发现 ,夏季水质合格率明显低于其他季节 (P <0 .0 5 ) ,高位水箱的游离性余氯合格率只有 5 5 .5 % ,显著低于地下蓄水池的合格率 (85 .7% ,P <0 .0 0 5 ) ;使用持续性消毒器对余氯维持一定时间的消毒效果确实有效 (P <0 .0 5 ) ,但使用不当有可能产生较多的氯化副产物 ;专业清洗消毒队的消毒效果明显好于单位自行消毒 (P <0 .0 5 )。提示应加强蓄水池的卫生防护和各类供水设施的消毒 ,尤其是夏季饮用水的消毒工作 ,要掌握持续消毒器科学的使用方法。条件许可时 ,应逐步淘汰二次供水设施。
In order to discuss the scientific management method of secondary water supply and sanitation, the data of supervision and monitoring over the past 10 years in Hefei were analyzed. The results showed that the qualification rate of summer water quality was significantly lower than that of other seasons (P <0.05). The passing rate of free residual chlorine in high level water tank was only 55.5%, significantly lower than that of underground water tank (85%). 7%, P <0.05). The sterilizing effect of using residual sterilizer to maintain residual chlorine for a certain period of time was indeed effective (P <0.05), but improper use may result in more chlorinated by-products ; Professional cleaning and disinfection teams disinfection effect was significantly better than the unit self-disinfection (P <0. Tip should be to strengthen the reservoir’s health protection and disinfection of various types of water supply facilities, especially in summer disinfection of drinking water, to master the use of continuous disinfection science. When conditions permit, the secondary water supply facilities should be phased out.