Monday, May 21, 2007

sewage disposal system

There are three main processes in sewage disposal unit: settling tank, pump house, and sprinkler beds. The settling tank used to collect all the waste from main pipe before the process. Pump house used to flow the polluted water so that the water flow in high speed and can be process. And the sprinkler beds as the end of process. First, the waste from house or other building flow through the main sewer and collected in settling tank. The settling tank contents polluted water and also solid things that can not be separated and can be used anymore. In this tank the process is sedimentation so the solid things will separated from the water in the bottom of the tank. The solid things will be burnt or removed from the settling tank, they are removed from the process. After polluted water separated from the solid things, pump house flow the water to the sprinkler beds. In this case there is no process. In the last process, sprinkler beds separate the polluted water from solid things those can’t be processed in settling tank and become sediment. The sprinkler contents brick, chemical filter, jet pump, and rotating arms. The process is: polluted water flow to the jet pump on the rotating arms, the rotating arms rotate the jet pump while it shot the water to the filter. So the process can separates the water from smaller solid things in addition brick and chemical filter process the water become pure water again, separate from chemical contents that dangerous for people. After the process the purified water can be used again or flow the river.

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