Sewage Disposal System

Before sewage from industries is thrown to the river, it needs to be processed to keep the environment safe from chemical or dangerous waste. There are 3 steps until the sewage become a purified water that can enter the river. The first step is done in the settling tank. In this part, the sewage or the polluted waste is run through the main sewer pipe to the settling tank. The polluted water is pumped to the pumped house while the solid sewage that has not decayed is removed and burned in the settling tank. From the pumped house, the remaining waste is pumped to the sprinkler beds. The sprinkler beds consist of brickwork, filter of stones and microorganism, rotating arm, and jets of polluted water. In this step, the polluted water is purified through the filter and rotating arm. After the water is purified, the water can enter the river.