Florida Wastewater Practice Test

What is one benefit of step feed aeration in wastewater treatment?

1. Reduces energy consumption

2. Treats higher flows in less space

3. Improves water temperature

4. Increases chemical use efficiency

The correct answer is: Treats higher flows in less space

One significant benefit of step feed aeration in wastewater treatment is that it treats higher flows in less space. This method allows for improved management of varying influent flows by dividing the flow into multiple smaller portions that are introduced into the aeration tank at different points. This setup enhances the contact between the wastewater and the microorganisms responsible for breaking down pollutants more efficiently. Using step feed aeration effectively increases the aeration tank's performance without requiring an increase in size, making it a space-saving option, particularly important in areas where land is at a premium. This method can lead to better performance in terms of oxygen transfer rates and overall treatment efficiency, especially during peak flow conditions when the inflow suddenly increases.