# How Does a Wastewater Treatment Plant Work? Understanding the Complete Process

Wastewater treatment facilities are an integral part of cleaning water resources. It is quite common for people to ask **[how does a wastewater treatment plant work](https://www.lakeside-equipment.com/how-does-a-wastewater-treatment-plant-work/)**, what goes on within its facilities before releasing treated water. The contemporary wastewater treatment facilities help to purify water by filtering out solids, contaminants, and organic matter in multiple stages of purification.


## Screening and Grit Removal
Treatment starts with the screening process, which involves the removal of large objects like plastics, rags, and other forms of trash in the incoming wastewater. Following screening, wastewater is subjected to grit chambers, where gravel and sand get deposited in the bottom part of the chamber. This is done in order to prevent damage to the equipment.

## Primary and Secondary Treatment Process
In primary clarification, wastewater is directed into big tanks called clarifiers, whereby sludge is allowed to settle at the bottom and oils, as well as grease, will float at the surface for easy separation. The effluent then enters aeration basins in which microorganisms decompose organic substances that have been dissolved in the water. Oxygen is continually supplied to facilitate the digestion process carried out by bacteria.

## Final Filtration and Disinfection
The process is completed with the passing of wastewater through filters where small particles are removed. Finally, the wastewater will be disinfected to kill bacteria present in the water. Chemicals or UV disinfection may be used for this process. Aerating tanks are included in some treatment plants so as to ensure that there is sufficient oxygen in the water. Lakeside Equipment Corporation has continued to provide assistance to wastewater plants.