基于EPANET-MSX的多水源供水管网余氯模拟研究

目前广泛使用的给水管网水质分析模型多是基于单种成分分析的水质模型,对于余氯衰减模型,仅假设整个管网中的余氯衰减常数是一致的.对于多水源管网而言,若各出厂水水质差别很大,而使余氯衰减常数相差很大时,将造成误差.通过建立符合实际工况的多水源余氯衰减模型,运用Epanet-msx水质模块进行模拟运算,对比不同水厂余氯衰减系数同一化处理和差异化处理对管网余氯浓度造成的差别,可以看出差异化处理将能更真实地反应管网中余氯浓度的分布和变化情况.

Study on Simulation of Residual Chlorine in Multi-Source Water Distribution System with EPANET-MSX

Now,the water quality models widely used in quality analysis in water distribution network just take a single species into account. For example,the chlorine decay model only assumes that the chlorine decay rate coefficient of the entire pipe network to be constant. In multi-source pipe networks,if the treated water qualities vary greatly,with a large difference in residual chlorine decay rate coefficient,it will cause errors. This paper presents a new chlorine decay model adaptable to the real multi-source network,using Epanet-msx simulation module,comparing the differences in the concentration of chlorine caused by using the same or different chlorine decay rate coefficient of the treated water from different water plants,and then taking the discrepancy of the chlo-rine decay rate coefficient into consideration will be able to reflect residual chlorine concentration and changes in the network more realistically.