Tennessee Wastewater Operator Practice Exam

What does the diffuser do in a turbo blower system?

1. Reduces pressure

2. Controls air flow

3. Injects air into the process tank

4. Regulates temperature

The correct answer is: Injects air into the process tank

In a turbo blower system, the primary function of the diffuser is to inject air into the process tank. The diffuser is designed to efficiently transfer the compressed air generated by the turbo blower into the wastewater treatment system. This process is critical because it introduces the necessary oxygen to support biological treatment processes, like aeration, which are essential for breaking down organic matter in the wastewater. The injection process involves distributing the incoming air in a way that maximizes contact between the air and the wastewater, promoting efficient oxygen transfer. This is vital for maintaining healthy microbial populations that facilitate the treatment process. By ensuring that air is injected properly into the tank, the diffuser plays a crucial role in the overall effectiveness of wastewater treatment operations. The other options relate to functions that are not the primary role of the diffuser in this context. The diffuser doesn’t directly regulate temperature or control airflow in the system; instead, its main purpose centers around oxygenation through the injection of air into the wastewater, enhancing the biological treatment process.