Effects of Pressure Change on Water Quality: Case of Akaki Phase 3B Water Supply Distribution System in Addis Ababa, Ethiopia
No Thumbnail Available
Date
2017-12
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Addis Ababa University
Abstract
Water network performance is defined as the ability to deliver a required quantity of water
under sufficient pressure and an acceptable level of quality. Systems that have big
transmission line may have problem on changes of pressure in the distribution system.
Because pressure rate changes have been too much between water treatment plant and dead
ends in distribution system. This study is to analyze the effects pressure changes on the water
quality in water distribution systems for case study of Akaki phase 3B water supply system
was assessed. Efforts were also made to identify the relationship between the residual
chlorine and pressure in the distribution of the water supply network systems using Water
Cad software /tool to model water distribution system.
Accordingly, simulation results show that, for maximum and minimum pressures were used
as base to evaluate the hydraulic performance; and simulation results for minimum residual
chlorine were used as base to assess water quality transformation in distribution system.
Pressure has a direct relationship with residual chlorine. Pressure change has been causing to
increase chlorine consumption more. The result of pressure changes among others can
decrease in chlorine content and hydraulic factors, because the systems may be extensive and
thus possess complex networks and hangs in quantity cause pressure of flow. Hence
hydraulic changes (pressure) could affect of water quality in the water distribution system.
Description
Keywords
Pressure Changes, Residual Chlorine, Water Quality, water distribution systems