居住区供水系统压力调控与水龄优化模拟研究

Simulation Study on Pressure Regulation and Water Age Optimization of Water Supply Systems in Residential Area

为进一步改善居住区供水品质、降低供水管网运行能耗,通过对上海某老旧小区的供水管网进行模拟,根据现状供水管网布置,针对水龄优化提出管径优化和管路优化2个方案,比较了水龄、水压、水质等水力情况。在管路优化的基础上进一步探讨了树状管网和环状管网对水质的影响。针对能耗较高的问题提出对居住区泵站进行优化运行,在现有基础上对比了降低水压恒压运行与分时段设置压力运行的水压稳定性与能耗高低,确定了最适合居住区泵站的运行方式。根据模拟结果,最终确定水龄优化采用变换管径的方式,这可以提升供水管网的水质和稳定性;泵站采用降压恒压运行的方式,在降低操作难度的同时,可以降低能耗,实现碳减排的目标。

In order to further improve the water supply quality and reduce the energy consumption of the water supply pipeline network in residential areas,a simulation of the water supply pipeline network in an old residential community in Shanghai was conducted.Based on the current layout of the water supply pipeline network,two schemes of pipe diameter and pipeline optimization were proposed to optimize the water age,the hydraulic conditions of water age,water pressure and water quality were compared.On the basis of pipeline optimization,the impact of treeshaped and loop-shaped pipeline networks on water quality was further explored.As for the issues of high energy consumption,the residential area pump station operation was proposed to be optimized,the water pressure stability and energy consumption were compared between constant pressure operation with partial time setting pressure operation to determine the most suitable operating mode for pump stationsin residential areas.According to the results of simulation,it is determined that variable pipe diameters should be adopted for water age optimization,which can improve the water quality and stability of the water supply pipeline network;That operation of constant pressure and pressure reduction should be operated in the pump stations,which can lower the operational difficulties and achieve carbon emission reduction goals while reducing energy consumption.