Essay On Water Supply

748 Words3 Pages
Water supply is vital for a properly functioning society. To supply water for human use and business use, infrastructure such as dams, water treatment plants, reservoirs, water towers, pipes and pumps are required. Those addresses the many components of water supply and infrastructure from water sources to wastewater discharge. Water treatments plants as a part and components of the infrastructures of water supply provides a process of treating water for drinking and other purposes. It removes existing water contaminants or so reduce their concentration that their water becomes fit for its desired end-use, which may be safely returning used water to the environment. The processes may be solids separation using physical processes such as aeration, filtration and chemical processes such as fluoridation and pH correction (involves lime), disinfection and coagulation. Raw or untreated water is withdrawn from either a surface water supply such as a lake, dams or reservoir or from an underground aquifer (by means of wells). Then it flows or is pumped to the floating boom and a coarse screen that traps floating debris. The water then flows through a rotating…show more content…
This process will be conducted at the treatment plant. First, the raw water will enter the aerator in the treatment plant, which is designed to create sufficient turbulence to achieve a dissolved oxygen content of 80% saturation at ambient temperature. Pre-lime and a primary coagulant, poly aluminum chloride (PACI) are add along with pre-chlorination for removal of dissolved iron and manganese. This is to neutralize the negative charge on the surfaces of the particles (suspended solids) present in the water, thereby eliminating the repulsive forces between the particles and enabling them to
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