Abstract:To evaluate the microbial safety during the source water switch in a drinking water treatment plant in Beijing, bacterial community compositions and potential pathogensin the raw water and finished water were analyzed by pyrosequencing. The bacterial diversity of finished water was significantly lower than raw water. Proteobacteria were observed as one of the most dominant populations both in raw water and finished water, ranging from 11.99% to 95.48%. Alphaproteobacteria, Betaproteobacteria and Gammaproteobacteria dominated in this group. However, the relative abundance varied in raw water and finished water. Cyanobacteria were found in raw water and finished water after water switch. Several potential pathogens were detected in the finished water and the majorbacteria were Acinetobacterand Delftia. The occurrence of pathogens was associated with increased health risk. PCoA results showed that bacterial community structure in raw water before switch was significantly different from that after water switch, but water switch had little effect on the bacterial composition of finished water. The water treatment plant operated stably during water switch.
张明露, 刘文君, 李翠萍, 李玉仙, 顾军农. 水源切换对水厂出水细菌群落的影响[J]. 中国环境科学, 2015, 35(8): 2517-2522.
ZHANG Ming-Lu, LIU Wen-Jun, LI Cui-Ping, LI Yu-Xian, GU Jun-Nong. Effect of water switch on the bacterial community structure of finished water in a drinking water treatment plant. CHINA ENVIRONMENTAL SCIENCECE, 2015, 35(8): 2517-2522.