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The Narragansett Bay Commission (NBC) recognizes that the odors from the metering chamber just upstream from the siphon (known as BVI-9) are adversely affecting residents in the area and has implemented various mitigation measures to reduce the occurrence of odors. This paper will focus on the data limitations inherent is such an investigation and how these limitations were overcome. The goal of the study was to define the maximum air flow and odor loading rates so that an odor control system could be appropriately sized to capture and treat odors BVI-9 metering chamber. Information on the physical characteristics of the system upstream from BVI-9 was reviewed because the hydraulic profile has an affect on odor generation.

The objective of the site visit and field sampling event was to obtain a clearer understanding of the hydraulic and ventilation dynamics of the WHI from the discharge of the force main at MH-25 to the siphon inlet at BVI-9. Information was collected on the ambient odor levels, headspace odor concentrations, and air flow rates. Cool air and water temperatures and above-average wastewater flow rates are not conducive to the production of dissolved sulfide and the release of hydrogen sulfide in the collection system. Thus, measured odor levels were expected to be lower than those that might be observed in the summer months.

Document Type: Research Article


Publication date: 2005-01-01

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