给水滞流管水质指标变化规律的研究  

Research on the Change of Water Quality in Stagnation in Water Distribution Networks

作　　者：陈磊[1] 刘轲[1] 柳景青[2] 罗志逢 裘尚德 周晓燕 何晓芳 黄佳佳[2] 

机构地区：[1]浙江工业大学建筑工程学院,杭州310014 [2]浙江大学建筑工程学院,杭州310058 [3]绍兴市水环境科学研究院有限公司,浙江绍兴312000

出　　处：《中国农村水利水电》2015年第9期44-46,51,共4页China Rural Water and Hydropower

基　　金：国家自然科学基金项目(51378455);水体污染控制与治理国家科技重大专项资助项目(2012ZX07403-003);浙江省公益基金资助项目(2014C33014);浙江省重点科技创新团队(2010R50037);浙江工业大学校基金重点项目(20100245)

摘　　要：滞流工况常发生在实际给水管网中,由于管道生物膜的存在,随着滞流时间加大,管网水质将趋于恶化,但是针对实际滞流管网,鲜有水质指标变化规律的相关研究。利用某城市管网上下游的2个中试点开展球墨铸铁管(NCI管)、聚乙烯管(PE管)的滞流对比实验,得到管网水质理化指标和活菌浓度的变化规律。研究结果表明:对于同一个中试点,在相同的滞时168h内,PE管的水质余氯、浊度、溶解氧以及活菌浓度等指标都较大程度优于NCI管的水质相应指标。Stagnation usually happens in water distribution networks .Due to the existence of biofilm ,water quality will change when stagnation happens .However ,there is little research on the change of water quality in stagnation in actual water distribution net‐works .An experiment of stagnation has been carried out in actual nodular cast iron （NCI） pipe and polyethylene（PE） pipe in up‐stream and downstream pilot test point .The changes of physico-chemical factors and live bacteria concentration in stagnation has been obtained .The results show that when stagnation happens in 168 h at the same pilot test point ,the water quality in terms of re‐sidual chlorine ,dissolved oxygen ,turbidity and live bacteria concentration in PE pipe is better than the water quality in NCI pipe .

关 键 词：给水滞流 供水管网 球墨铸铁管 聚乙烯管 水质 

分 类 号：TU991.33[建筑科学—市政工程]