Wastewater Operator Class C Practice Exam 2025 – Complete Study Guide

Implementing air scrubbing and covering tanks is an effective measure to reduce odor issues at wastewater treatment plants. Air scrubbing involves using various methods, such as chemical scrubbers or biofiltration systems, to treat foul air generated during the wastewater treatment process before it is released into the atmosphere. This process captures and neutralizes the odors, significantly improving the air quality around the facility. Covering tanks also plays a crucial role in odor control; by enclosing the treatment processes, it minimizes the escape of volatile compounds that contribute to odors. This dual approach not only mitigates unpleasant smells but also enhances the overall efficiency of the treatment operation by capturing gases that may harm the environment.

The alternative measures, while they may seem beneficial, do not directly address the control of odors in a comprehensive manner. For instance, adopting only natural treatments may not be sufficient if the process still generates odors, as some natural systems can also produce smells. Lowering water levels and reducing treatment cycles can potentially lead to incomplete treatment, thus exacerbating odor issues rather than alleviating them. Therefore, the combination of air scrubbing and tank covering is the most effective strategy for managing and reducing odors at treatment facilities.