How Water is Purified in Water Treatment Plant

Water is a precious resource and it is essential that it is purified before use. Water treatment is a process that involves the removal of contaminants and bacteria from water. This article will discuss the process of water purification in a water treatment plant.

Coagulation and Flocculation

The first step in water purification is coagulation and flocculation. During coagulation, chemicals are added to the water in order to bind together the dirt and impurities in it. During flocculation, the water is stirred slowly so that the impurities will stick together and form clumps. These clumps are called flocs.

Sedimentation

After the flocs have formed, the water is allowed to sit so that the heavier flocs can sink to the bottom to form sediment. The sediment is then removed from the water.

Filtration

Once sedimentation is complete, the water is run through multiple filters to remove smaller particles that may still remain. The filters are made up of various layers of sand, gravel and anthracite, which trap the remaining impurities.

Disinfection

The final step in water purification is disinfection. This is done to kill any remaining bacteria and viruses in the water. Chlorine is the most commonly used disinfectant, but other options such as ozone, ultraviolet light or peroxide can be used as well.

Conclusion

Water purification is essential to ensure that drinking water is safe and free of contaminants. The process of water purification involves coagulation and flocculation, sedimentation, filtration and disinfection. By adhering to strict regulations and procedures, water treatment plants are able to provide clean and safe water for human consumption.