Proactive odor control at municipal wastewater processing facilityProblem: A municipal wastewater recycling project in Slater, Iowa, introduced an algae-based nutrient removal process designed to reduce nitrogen and phosphorus while generating a fertilizer product. While the treatment technology itself was successful, facility operators noticed hydrogen sulfide and mercaptan odors during algae dewatering and drying. The site was close to a residential neighborhood and a playground.Solution: Industrial Odor Control engineered a dual-system adsorption odor control system instead of a single large unit. Two independent carbon scrubbers serve the 33,000-square-foot processing area. The configuration simplified transportation and installation while allowing odor control to
