Sewage Disposal Unit

Sewage cannot be disposed directly to the sea or river so the water that contains sewage must firstly be purified using a sewage disposal unit. The process in a sewage disposal unit starts with the polluted water being flown to the settling tank through the main sewer. In the settling tank, the undecayed solid is separated from the polluted water and stays on the bottom of the tank where it will then be removed and burned. After that the polluted water is flown to the pump house where it will be pumped to the sprinkle beds. At the top of sprinkler bed there are rotating arms which spray the polluted water that flows through the rotating arms to the filter. The filter is made of bricks at the outer part and contains stones and micro-organism with which the polluted water is purified and finally ready to be directly flown to the sea or river