Performance of microbiological control by a point-of-use filter system for drinking water purification
Performance of microbiological control by a point-of-use filter system for drinking water purification作者机构:Department of Chemical Engineering Tsinghua University Beijing 100084 China. College of Chemistry and Chemical Engineering Graduate University of Chinese Academy of Sciences Beijing 100049 China Institute of Microbiology Xinjiang Academy of Agricultural Sciences Urumqi 830000 China
出 版 物:《Journal of Environmental Sciences》 (环境科学学报(英文版))
年 卷 期:2009年第21卷第9期
页 面:1237-1246页
核心收录:
学科分类:081702[工学-化学工艺] 08[工学] 0817[工学-化学工程与技术] 0815[工学-水利工程]
主 题:drinking water point-of-use filter biofilm bacteria community activated carbon
摘 要:Purification capacity of a faucet mounted type water filter for home use was evaluated, particularly with regard to microbiological performance under different running conditions. Biofilms were formed inside the filter, affecting the bacterial quality of the effluent water. Low flow rate, long stagnation period and high filter temperature were found favorable for bacterial growth inside. By commercial analytical profile index (API) kits, ten different bacterial species were identified in drinking water, four of which were probably contributed to the biofilm formation since they were also present in the biofilm. Fluorescence in situ hybridization (FISH) was used to confirm the API identification results, and direct viable count (DVC) method was employed to improve the sensitivity of FISH for the isolated Acinetobacter spp. and Pseudomonas putida as models. Relationship between the filter operating condition and the bacterial community alteration was partly revealed, which could provide the basic knowledge for the filter design and its practical use.