| Abstract |
| Pre-chlorination process is the first step in portable water process in order to oxidize such as algae, bacteria, organic matter, iron and manganese. In addition, It is may be used to prevent the growth of organisms within the water intake facilities and an water treatment facilities. Thus, depending on the purpose of pre-chlorination, chlorine injection point and how careful design is required. The pre-chlorine can be put at the intake conduit grit chamber, absorbing well of intake pumping station, intake pipe, receiving well. we evaluated most suitable design method of pre-chlorination process by using computational fluid dynamics. The study results, the injection way of chlorine at the intake conduit and pipe is efficient the direct pipe than perforated pipe. Also, mixing length of injected chlorine is four times of pipe diameter. The method of pre-chlorination injection in grits chamber is efficient the perforated pipe. Uniformity of effluent amount at the each hole is inversely proportional to the area ratio. Efficient injection way of chlorine within absorbing well of intake pumping station is the direct pipe than the perforated pipe. chlorine injection pipe should ensure a sufficient distance from the operating pump. The gap between the operating pump and the other is the shorter the better. The optimal depth of the injection pipe is between middle depth and inflow pipe of pump. |
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| Key Words |
| Pre-chlorination, Injection point of chlorine, Grit chamber, Intake pump absorbing well, Computational Fluid Dynamics, CFD |
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