北方某高校管网水质生物稳定性的研究

目前关于饮用水安全性的研究大都集中在出厂水水质上，对给水管网中水质的变化则重视不够，而给水管网在整个供水体系中占有重要的地位，对保障水质安全起关键作用。为此，结合北方某高校校园管网的水质监测数据，分析了管网水中异养细菌的生长情况及其影响因素。结果表明，沿水流方向管网水质变得越来越差，至管网末梢时自由余氯、浊度、细菌总数等都劣于国家饮用水卫生标准；影响该管网水质生物稳定性的主要因素为AOC、自由余氯、浊度、有机物等。

Study on Biostability of Water Quality in Network of a North College

Presently, most concerns on the safety of drinking water are focused on the final treated water quality, while less attention is paid on the variation of water quality in water networks. Water networks are the important part of the water supply system, affecting the quality of drinking water. Based on the monitoring data on water quality in the network of a north college, the growth of heterotrophic bacteria and the affecting factors in the network water were analyzed. The results show that the water quality along the water flow direction becomes poorer and poorer, and free residual chlorine, turbidity, number of bacteria etc. in the network end are inferior to the national standard for drinking water hygiene. The key factors affecting the biostability of the water quality in the network are AOC, free residual chlorine, turbidity, organic matters etc.