Aeration solution prevents odors and operational issues at rural plants
Problem: The cities of Delano and Reedley in California’s San Joaquin Valley expanded their wastewater treatment facilities to accommodate flows up to 8.8 and 5.0 mgd. In the upgrades each facility needs a reliable method to keep biosolids holding tanks from going septic. The 110,000-gallon, uncovered tanks needed consistent aeration to control odors and avoid downstream issues with dewatering centrifuges.
Solution: The plants installed aeration systems with Mazzei stainless steel venturi injectors and chopper pumps. These external, nonsubmerged systems enable two modes of operation: single-pass aeration from secondary clarifiers, or continuous recirculation from the biosolids
