The District is required to meet certain air quality requirements in order to operate. Given that wastewater has strong unpleasant smells and the treatment of wastewater has the potential to release foul odors, the District has invested in two odor control towers which help to “scrub” the air released during in the processing of wastewater and solids to limit the emissions released into the air. The odor control towers use ferric chloride and sulfur-eating bacteria which help control the amount of sulfur gas (hydrogen sulfide = the rotten egg smell).
The District submits a report every year to the Air Pollution Control District (APCD) verifying that we meet all requirements for emissions. We value the importance of protecting the air we all breathe, and work hard to keep emissions low. The District recently changed from ferrous chloride to ferric chloride to aid in the treatment process. The change to ferric chloride is a more effective and efficient way of cleaning the air, and is another example of embracing innovative solutions to treatment process challenges.