管网水常规水质指标变化规律及其对悬浮菌生长的影响  

Changes of Turbidity,pH,Chlorine Residual and Heterotrophic Plate Count(HPC) in Drinking Water Network and Its'Effect on Bacterial Regrowth

作　　者：姜登岭[1] 倪国葳[1] 张树德[1] 曹国凭[1] 薄国柱[1] 

机构地区：[1]河北理工大学建筑工程学院,河北唐山063009

出　　处：《河北理工大学学报（自然科学版）》2007年第3期126-129,共4页Journal of Hebei Polytechnic University:Social Science Edition

基　　金：河北理工大学自然科学研究基金(200625)

摘　　要：试验研究了配水管网中常规水质指标随输水距离延长的变化规律以及与细菌再生长的相互关系。随着输水距离的增长,管网水中HPC明显升高,基本保持在104CFU/mL;管网水浊度有所升高,pH值变化较小;余氯量明显下降,水温越高,余氯量下降越快;小管径管道中余氯下降快,管壁生物膜是造成余氯消耗的主要因素。余氯量是控制管网水中悬浮菌再生长的主要常规水质指标,pH值、水温等对细菌再生长影响较小。The changes of turbidity,pH,disinfectants residual and heterotrophic plate count （HPC） in drinking water distribution system were investigated. With the increase of hydraulic retention time,there was a litttle increase with the turbidity and almost no variation with the pH of drinking water. HPC increased greatly,which reached about 10^4 CFU/mL in the end of network. Chlorine residual decreased obviously, especially when water temperature was higher. Biofilm was the key factor caused chlorine consumption. In small diameter pipe, chlorine decreased more greatly than in big diameter pipe because of higher ratio of biofilm volume to water volume. It was chlorine residual other than pH,temperature that control bacterial regrowth in the network.

关 键 词：配水管网 细菌再生长 HPC 余氯量 PH值 

分 类 号：TU991.33[建筑科学—市政工程]