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Sewage after processing is known as effluent and is used many purpose suppose in industries, home, etc
Liquid Waste (Sewage / Waste Water) Treatment
Flushing the toilets, baths, washing sinks and general cleaning, the waste water (liquid waste) goes down the drain and into a pipe, which is involved in a large sewer pipe under the road. Large pipe also joins a major pipe which leads to the treatment center.
Step One: Screening
Screening is the first step of the wastewater treatment process. Screening eliminates big substances such as diapers, napkins, sanitary items, cotton buds, wipes face and even broken bottles, bottles, plastics and rags that can choke or damage the device.
Special equipment is also used to remove the washing of sewter.
Step Two: First Aid
It involves separation of organic solids (or human waste) from wastewater. To drown under the tank, the wastewater is used for solid substances by putting them in large disposal tank. The settlement is called 'mud'. Under these circular tanks, large scrapers continually scratch the tank floor and push the mud towards the center, where it is pumped for further treatment. Then the remaining water is taken to secondary treatment.
Step Three: Secondary Treatment
In this phase the water is kept in a large rectangular tank. These are called atmospheric lanes. In order to encourage bacteria to break small pieces of mud, the air is pumped into water, which has escaped from the mud scraping process.
Step Four: Final Treatment
After this, 'almost' treated waste water is passed through a disposal tank. Here, the settlement of bacterial vertebrae becomes more sludge at the bottom of the tank. Again, sludge is scraped and collected for treatment. Water at this phase is nearly free from dangerous substances and chemicals. Water is allowed to flow on the wall where it is filtered through the sand bed to remove any extra particle.
Filtered water is left in the river.