Hydraulic Design of Nyala Water Supply Project from Bagara Basin

Abstract

The project is named Nyala Water Project, the design capacity of this project is 40,000 cubic meters of water per day , it was designed by the Public Water Corporation of the Ministry of Irrigation and Water Resources in November of the year 2000, and that the proposal is based to drill 20 wells in the area of Gareida assuming that the productivity of these wells are equal and equal to 2,000 cubic meters per day , and that the water is disinfected with chlorine according to World Health Organization standards (WHO). And then will be pumped by a number of pumping stations to the city of Nyala, a distance of 85 kilometers in the north. Since the basic design of the project (hydraulic design) is based on pumping water through the pumping stages, the first in the field, and the second after 26 kilometers, and the third a distance of 18 kilometers from the second and fourth 28 kilometers of the third and discharges water into two tanks with a capacity of 4000 Cubic meters each, and then to the distribution network of the city. After reviewing the existing design work and analysis of the basic components of the project, it was found that the project can be re- designed to reduce the number of pumping stations, thus reducing operating and maintenance costs. Steps have been clarified in the new hydraulic design in chapter four, as well as the work tables to compare the operating costs in the case of the old and the new situation. And also found that the operation of this project by electricity can reduce costs of operation and maintenance to a very large, and the research has made the comparison between them and the old design, and also between them and the new design.