Biogas Harvester (patent pending), when installed to treat raw sewage upstream of a pumping station or Water Resource Recovery Facility (WRRF) could recover biogas energy and virtually eliminate fugitive methane, hydrogen sulfide, and other volatile sulfur compounds released during wastewater collection and treatment. It could perform similarly if applied to digested-biosolids upstream of dewatering or many other locations at WRRFs or the collection systems that feed them. With less hydrogen sulfide, worker safety is improved, and equipment would last longer even without odor control. As a final benefit, almost all dissolved or free methane would be recovered, solving an identified challenge for anaerobic-mainstream sewage treatment (enabling use of such industry-transforming processes) and sewer methane.

Biogas Harvester Recovers Dissolved Biogas for Energy Production, GHG Reduction, and H2S Collection
Authors: John Willis, Ashwin Dhanasekar, Robert Fergen, Debbie Griner, Melissa Jauregui, and Sydney Salit
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