Sunday 25 March 2007

Sewage Disposal Unit

The process of disposing sewage in the sewage disposal unit is quite simple. First, the polluted water is flown to the settling tank through the main sewer. In the settling tank, the polluted water is separated from the undecayed solids that is stays in the bottom of the tank. After the separating process, the undecayed solids is removed from the tank and then burned while the polluted water is flown to the pump house. In the pump house, the polluted water is pumped to the sprinkler beds, which is the last part of the process. In the sprinkler beds, the polluted water flows through the rotating arms. The speed of the rotating arm makes the polluted water that flows through become a jet. Then, the jet of polluted water is sprayed to the filter that made of bricks and contains stones and micro-organisms. When the water flows through the filter, the stones and micro-organisms filter and purified the water. After that process, the water is ready to enter the river.

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