Wednesday 23 May 2007

Sewage Disposal Unit

A sewage disposal unit doesn’t work in a complicated way. First, sewage from main sewer is flown to settling tank through the main sewer. In the settling tank, the sewage is separated into two forms, the solid forms which called the undecayed solids waste and the liquid forms which called polluted water. The undecayed solids waste, which stays in the bottom of the tank, are removed from the settling tank and burnt outside, while the polluted water is distributed to the pump house. The polluted water is pumped from the pump house to the sprinkler beds, where the purifying water process is taken. At the top of sprinkler bed there are rotating arms which can sprinkle the polluted water into sprinkler bed. The speed of the rotating arm makes the polluted water that flows through become a jet. Then, the jet of polluted water is sprayed of the rotating arms to the brick work. The stones and micro-organisms are filtered in this process. After going through that final process, the purified water is distributed back to enter the river.

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