Evaluation and Phase 1 Implementation of Emissions Abatement at the Des Moines, Iowa Wastewater Reclamation Facility

The Des Moines Wastewater Reclamation Authority operates a 97-million gallon per day regional wastewater reclamation facility (WRF). Originally constructed in a largely rural area, current development plans for the area around the WRF establish a need for emissions control to reduce offsite odor impacts, in addition to reducing odor emissions to the surrounding neighborhoods.The Emission Reduction Study presents a plan to strategically abate emissions based on the following components:Comprehensive monitoring, sampling, and assessment of emissions sources.Prioritization of emission sources based on relative contribution to offsite odor levels.Consideration of multiple technologies to control priority emissions.Progressive control of WRF emissions to achieve short- and long-term goals as warranted by development of the surrounding area.The first phase of recommendations from the Study for construction of two biofilters has already been implemented. This paper presents information from both the Study and Phase 1.