Intermittent water supply system network sizing – A case study

Design of water distribution network (WDN) for intermittent supply system is one of the challenging tasks. Its design on current and futuristic need shall be planned properly so that proper phasing and upgrading can be done effectively once it reaches at different states. The main problem faced by WDN is the pressure deficient condition. Whenever more flow is drawn at certain user nodes due to rapid urbanization and increase in population in certain packet of the region, pressure deficiency state. It is regular situation that certain consumers enjoy uninterrupted water distribution with sufficient pressure head and whereas, users located at remotely from supplying source faces with deficient supply due to deficit availability pressure head. The pressure at ferrule point in the WDN is more important to provide adequate service pressure and it is hardly met owing head loss that occurs from the source to sink. Due to these kinds of reason, meeting supply equitably is found to be challenging. This paper normalises the street and city pipelines for equitable water distribution using hydraulic simulation. The case study is based out of Kailashnagar, Trichippalli in Tamil Nadu considering its population and phasing construction barriers. Several analysis for satisfying the criteria was made with many methods, and all of them have been evaluated to finally adopt the best cost - effective option serving the needs of population growth. The same network was used and assessed to determine the size of pipeline needed for the building pipeline network.