Sewage Water Treatment Plants- Process of Treating Wastewater


Wastewater from sinks and drains finds its way to a larger sewer pipe down the road. This large pipe then links the wastewater to the water treatment plant for treatment. After treatment of this water, chances are that it can then be reused. The treatment process takes place in a series of events as follows.

The first stage is the screening process. This involves removal of large components including sanitary towels, plastics, and bottles. Anything that is likely to cause drainage blockage is done away with. To do this, special equipment is needed to ensure that the dirt removal is effective. It is cumbersome to have grit washed into the sewer.

Once the dirt has been eliminated, the next step is to get primary treatment. This level of treatment involves separating human waste or organic solid matter this happens when the water is put in a settlement tank and the solid waste allowed to settle. This solid waste is known as sludge. The remaining water is then moved to a secondary treatment tank.

This stage involves putting water in huge tanks, rectangular. At this stage, more sludge is formed at the bottom of the tank because of the bacterial action. This tank is referred to as the aeration lane where the air is pumped into the tank to encourage the bacterial action, which breaks down the escaped sludge into tiny pieces.

Once the aeration stage is complete, the next step is to pass the almost treated water into a settlement tank, which in turn allows more bacteria to settle at the bottom. The sludge is then scraped and collected for treatment. At this stage, the wastewater treatment plant design is almost free from harmful substances and any other chemicals. Water then flows over a wall and where a sand water filtration bed is. This filtration chamber gets rid of all particles that are then prevented from getting into the tank that will then be used to redistribute water to users. The goal is to have water back into the main system.

Sewage water treatment can be recycled for use. This water can be used for different purposes such as cleaning and watering crops. In a world where availability of clean water is a challenge, there is need to ensure that water is well utilized. Furthermore, the sludge from these treatment plants can be converted into useful farming input thus saving you money that would otherwise have been spent on fertilizer purchase.