Understanding The Workings of a Wastewater Treatment System

For the proper drainage of the waste water and sewage from buildings, intricate networks of pipes are installed. More often than not, this water would be allowed to go to waste. But as awareness for water conservation increased, treatment of the waste water to recycle it and put it back into use has been facilitated through wastewater management and treatment systems. Let us try and understand in brief the workings of the process:

1. The runoff from rainwater and stormwater is first collected in a large tank or reservoir through a network of water pipes and fittings which supply all the water to the tank. These pipes may work through the action of gravity or may require pumps to send the water to the main tank.

2. In the reservoir or water tank, first, coagulation is carried out to remove the majority of the contaminants. Chemicals may be added for this purpose which remove the fine particles by combining them with the heavy particles in the water which settle at the bottom of the tank by the action of gravity.

3. The next step in any wastewater treatment system is flocculation, in which the water is sent into a chamber where it is slowly churned with long-chain polymers which attach to the residue dirt and micro particles and create visible particles which can be separated out.

4. Post the flocculation, the semi-treated water is sent for sedimentation. The water from the flocculation chamber is drained into another chamber where it is circulated and then allowed to settle. During the settling process, the solid particles that remain in the water sink to the bottom of the tank to form a sludge.

5. In the final stage of the treatment of water in the wastewater treatment system, the water is filtered using sand filters or multi-bed filters. Chlorination and UV filtration of the water may also be carried out if it is to be used for domestic purposes such as cleaning and in the toilets.

6. Thereafter, the treated water is supplied though a separate network of pipes and water pipe connector and supplied for utilization. Often, the pipes for the treated water are of a different colour to indicate the different quality of the water being supplied through them.  

For the best solutions for wastewater treatment, explore the technology and services offered by Wavin, one of the leading companies in the world offering state-of-the-art solutions for sustainable water supply and management.

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