供水管网水质化学稳定性分析及水质敏感区识别

Analysis of Water Chemical Stability and Identification of Sensitive Areas in Water Supply Network

针对南方某市多水源供水现状,研究了供水管网水质化学稳定性变化特征,并对该市供水管网水质敏感区进行识别。选取了该市不同水厂供水区域内20个管网采样点2019年3月—2021年3月的余氯、浊度及总铁数据,对不同区域不同季节的管网水质特性进行分析。结果表明,该市供水管网水质整体较好,管网水质敏感区主要集中在供水管网末梢、老旧城区及部分供水分界点,在水源调度过程中需重点关注。管网水质中浊度与余氯具有一定的负相关性,而水体浊度的增加与管道内壁含铁污染物的释放有关。

This paper investigated the characteristics of water chemical stability in a multi‑source water supply network in a southern city,and identified the water quality sensitive areas of the water supply network.The data of residual chlorine,turbidity and total iron from 20 sampling points of the city from March 2019 to March 2021 were selected to analyze the water quality characteristics of the pipeline network in different regions and seasons.The water quality of the water supply network in the city was overall good,and the water quality sensitive areas were mainly located at the end of the water supply network,the old urban areas and some water supply demarcation points,which should be paid attention to in the process of water supply dispatching.There was a negative correlation between turbidity and residual chlorine,and the increase of turbidity was related to the release of iron‑containing pollutants in the inner wall of the pipeline.