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Engineer: modern design and enclosed treatment basins can reduce odor risks at new plant
Summary
A technical presenter told the committee modern reclamation facilities are designed to capture gases from anaerobic basins and run them through bio-scrubbers, saying newer plants manage odors better than the existing 1950s-era facility.
A presenter addressing the committee described how modern wastewater treatment facilities employ enclosed design and odor-control systems to limit off-site smells. He said older plants, like the existing plant built in the 1950s, use retrofit odor systems that can fail, while newer plants design basins with odor capture and bio-scrubbers from the start.
The presenter said the committee should understand the difference in process: anaerobic basins (which produce the most odor) are typically covered and vented to treatment systems, whereas aerobic basins — where large volumes of air are introduced — are often not covered because field tests show they produce little odor. He cited recent projects and consulting work with Brown and Caldwell and Hazen as context for the claim that modern systems can be effective at odor control.
