The WU tap water production system pumps the raw water from all reservoirs. The capacity of the pumps is 220 cubic meters per day with 12 meters of water pressure, driven by 25 hp motors. The size of the raw water pipeline is 400 cubic meters.
The Poly Aluminum Chloride, a chemical substance, is dispensed to the raw water for the destabilization of a colloidal suspension.
The chemical substances are mixed with high-speed mixers. The speed of turbulence depends on the speed of the pouring of raw water.
Sedimentation is a method of separating solid particles from liquids with the force of gravity. The sedimentation of raw water forms two substances, including clear water and sludge. The substances are collected in a sedimentation tank. It is 4 meters wide, 23.7 meters long and 2.5 meters deep. The capacity of the tank is 750 cubic meters. Each tank can produce water for 50 cubic meters per hour. Currently, WU is using general sedimentation tanks consisting of two parts, including slow-stirring parts and the parts attached to sediment drain pipes.
Chlorine gas disinfection is a method for sterilization using chlorine with 3 – 0.5 mg/liter.
The tap water system of WU distributes water to buildings using 4 big pumps with low electricity consumption. The pumps can accelerate and decelerate for water distribution. WU has an emergency power system for tap water production.
Walailak University
The Center for Academic Service , Walailak University THASALA DISTRICT, NAKHON SI THAMMARAT PROVINCE
