Investigation of the Impact of Anti-Negative Pressure Facility on Water Distribution Systems
High level water tank is a commonly used facility to satisfy water demand for people living in high building, which is also the so-called secondary water supply system (SWSS) in China. Due to lack of maintenance, water quality problem has been frequently reported in the SWSS. In the last few decades, anti-negative pressure facility (ANPF) has emerged as a revolutionary approach for sloving the pollution in the SWSS. ANPF makes good use of the municipal pipeline pressure, which is the improvement of traditional water supply. However, most of recent research activities mainly focus on the influence of part of water distribution system (WDS). In this paper, the software of EPANET has been applied in the SWSS calculation and simulaion. Besides that, the SWSS with ANPF simulation method is proposed to evaluate the effect of other all nodespressure in the WDS using hydraulic model. As the cases study, the paper analyzed two WDSs with ANPF. Afer simulation of the SWSS, the result of WDS, which is smaller, indicates that 6 out of the 9 nodes are affected with ANPF and that of WDS, which is larger, demonstrates that 37 out of the 41 nodes are affected and the affected nodes are focused on the confluent of pipes, especially around the ANPF.
secondary water supply system anti-negative pressure facility nodes pressure
WANGHuanhuan LlUShuming MENGFanlin BAILu CHENG Mingbo
School of environment, Tsinghua University, Beijing, China Yan Long Water Supply Co., Ltd, Beijing, China
国际会议
北京
英文
159-160
2011-11-24（万方平台首次上网日期，不代表论文的发表时间）