Design of a water distribution network and wastewater collection network for Asira al-Qibliya village

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Date
2015
Authors
Doa'a H. Khloof
Raw'a M. Najjar
Sewar Abo Abed
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Abstract
Water is life . It supports the immense diversity of life on earth. The problem in fresh water storage supply is a serious problem that the world tries to deal with . Nowadays, water distribution networks serve many purposes in addition to the provision of water for human consumption. Wastewater that results from the consumption of fresh water must be disposed of through the establishment of sewage network. In this project we will work for designing a water distribution network (WDN) in Asira al-Qibliya village and will design a wastewater collection network (WWCN). The village doesn't have a wastewater distribution network. In addition, some people dispose of waste water through septic tanks and some of water is disposed of in the streets and non-inhabited areas, and this causes pollution to the environment and health problems, so we will design a water distribution network and a waste water collection network. To work on our project we need contour map, area and its geographical location, existing and proposed road networks, population in the village, residential houses and tank's location, average annual rainfall, water demand per capita, production of sewage per capita and the existing water distribution network. Our methodology starts by collecting data that we mentioned above. Second, hydraulically analysis of the existing networks and identifying problems related to it. Third, analyze the data and design the network using these programs : WaterCAD, SewerCAD and ArcMap. Our project design period is 30 years. After the design of the water distribution network, we obtained allowable values of velocities in the pipes which are within the range ( 0.2-3.0 ) m/s. Also we obtained allowable values of pressures at nodes which are within the range ( 20-100 ) m H2O. After the design of the wastewater collection network, we obtained allowable values of velocities in the conduits which are within the range ( 0.6-3.0 ) m/s. Also we obtained allowable values of slopes and cover depths which are within the range ( 1-15 )% and ( 1-5 )m ,respectively. As a result, our design is serviceable and able to be performed.
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