《城市供水水质标准》中水质采样点布置及合格率计算方法的探讨

Discussion on Arrangement of Water Sampling Points and Calculation Method of Qualified Rate of Water Quality for "Water Quality Standard of Urban Water Supply"

当今世界各国都把提高供水管网水质,保障供水安全作为供水服务的首要任务。因此,研究出厂水在管网中的水质变化规律,建立合理的管网水质评价体系,具有重要的现实意义。该文以《城市供水水质标准》(CJ/T 206—2005)为研究对象,通过对该标准中水质指标采样点的选取、采样频率的确定以及合格率计算公式中存在的问题进行分析,提出了106项水质指标合格率计算公式以及"面积分割法"进行采样点优化选址的方案。同时,对相关参数进行优化调整,改善了水质评价中的不足,为我国水质评价提供科学决策依据。

Nowadays,the improvement of drinking water quality and the security of water service are the key task for countries around the world. Therefore,the research on water quality variation in the supply system and the establishment in reasonable analysis system of water quality have important practical significance. This paper had treated The Quality Standard o f Urban Water Supply as the object of study, through the problem analysis in the selection of sampling si tes,sampling frequency and qualified rate calculation formula from the s tandard,put forward the “area partition method” for sampling point and optimization scheme of access. Meanwhile,to improve the water quality evaluation and name the water sampling si tes,the formulation of qualified rate were also be optimized. All of those measures provided scientific decisive basis for water quality assessment in our country.