Application of Ice Pigging in a Drinking Water Distribution System:Impacts on Pipes and Bulk Water Quality  

作　　者：Yujing Huang Zhiwei Chen Guilin He Yu Shao Shuang Song Feilong Dong Tuqiao Zhang 

机构地区：[1]College of Civil Engineering and Architecture,Zhejiang University,Hangzhou 310027,China [2]Suzhou Wuzhong Water Co.,Ltd.,Suzhou 215128,China [3]School of Municipal and Environmental Engineering,Shandong Jianzhu University,Ji’nan 250101,China [4]College of Environment,Zhejiang University of Technology,Hangzhou 310014,China

出　　处：《Engineering》2024年第9期122-130,共9页工程（英文）

基　　金：financially supported by the National Natural Science Foundation of China(52100015);the Zhejiang Provincial Natural Science Foundation of China(LQ22E080018);the China Postdoctoral Science Foundation(2021M692860).

摘　　要：Ice pigging is an emerging technique for pipe cleaning in drinking water distribution systems.However,substantial confusion and controversy exist on the potential impacts of ice pigging on bulk water quality.This study monitored the microstructural features and composition of sediments and microbial community structures in bulk water in eight multimaterial Chinese networks.Chloride concentration analysis demonstrated that separate cleaning of pipes with different materials in complex networks could mitigate the risk of losing ice pigs and degrading water quality.The microstructural and trace element characterization results showed that ice pigs would scarcely disturb the inner surfaces of long-used pipes.The bacterial richness and diversity of bulk water decreased significantly after ice pigging.Furthermore,correlations were established between pipe service age,temperature,and chloride and total iron concentrations,and the 15 most abundant taxa in bulk water,which could be used to guide practical ice pigging operations.

关 键 词：Ice pigging Pipe cleaning Drinking water distribution system Bacterial community SEDIMENTS 

分 类 号：TU991.36[建筑科学—市政工程]