How does aereation helps in sewage treatment

Solution:

Sewage treatment is the process of removing contaminants from waste water by physical, chemical, or biological methods. Treated wastewater or effluent should be safer for the environment than the untreated waste.

• Aeration is a crucial step in sewage treatment as it helps to increase the amount of dissolved oxygen in the wastewater.
• This, in turn, stimulates the growth of microorganisms that break down the organic matter in the sewage, converting it into less harmful substances.
• By improving the oxygen levels in the wastewater, aeration enables the treatment process to proceed more efficiently and effectively, resulting in higher-quality effluent that can be safely discharged into the environment.