Dissolved Methane Recovery and Trace Contaminant Fate Following Mainstream Anaerobic Treatment of Municipal Wastewater
Stephen M. Galdi, Aleksandra Szczuka, Chungheon Shin, William A. Mitch, Richard G. Luthy
Abstract
present in the blended biogas and air stripping mixture. The fate of a subset of trace organic contaminants was examined across the air stripping unit to check for aerobic degradation by methanotrophs or other opportunistic aerobes. Only 1,4-dioxane and benzotriazole showed statistically significant removal among 17 compounds screened, with 0.53 ± 0.13 and 0.34 ± 0.15 fraction removal, respectively. Our results indicate that air stripping is an energy efficient and robust technology for dissolved methane removal and onsite utilization for heat and electricity generation from anaerobic treatment of municipal wastewater.
Topics & Concepts
WastewaterMethaneEnvironmental scienceTRACE (psycholinguistics)Waste managementMainstreamSewage treatmentEnvironmental chemistryAnaerobic exerciseEnvironmental engineeringChemistryEngineeringPolitical scienceLawOrganic chemistryLinguisticsPhilosophyBiologyPhysiologyOdor and Emission Control TechnologiesAir Quality Monitoring and ForecastingWater Treatment and Disinfection