ABSTRACT
A description of the RBC process is provided in Chapter 17 and immediately above. As indicated in Figure 20.1, a cover (typically fiberglass) is provided over each individual RBC unit for physical protection and process enhancement. Alternatively, entire installations can be placed in buildings, but this can result in a humid, corrosive atmosphere, leading to accelerated corrosion. Covers provide protection against inclement weather, freezing, and sunlight, which accelerates media deterioration. Covers also reduce heat loss, allow the offgas to be collected for odor control, and minimize algae growth.
