Responses of nitrifying populations and microbial communities to chlorine burn in a chloraminated drinking water distribution system. Drinking water nitrification

Short-term switching to chlorine disinfection (i.e., “chlorine burn”) is a common approach to controlling nitrification in chloraminated drinking water distribution systems, yet its effectiveness and mode(s) of action have not been fully investigated. This study characterized occurrence of nitrifying populations and profiled microbial community compositions before, during and after a chlorine burn at 46 sites in a chloraminated distribution system with varying pipe materials and levels of observed nitrification.

短期切换至氯消毒（即"氯冲击（chlorine burn）"）是控制氯胺化饮用水输配管网系统硝化作用的常用手段，但其实际效能与作用机制尚未得到充分探究。本研究针对管材种类各异、硝化程度不等的某氯胺化饮用水输配管网系统，于该系统内46个采样点位开展监测，解析了氯冲击前、中、后各阶段的硝化菌群存在特征，并表征了对应阶段的微生物群落组成。