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A detailed odor study and remedy plan was conducted for the Potomac Interceptor (PI) sanitary sewer system with a long-term goal of eliminating odor problems while maintaining the integrity of the concrete pipes. The odor study consisted of field data collection and odor assessments to define the scope of the odor problems along the PI system. Several options were considered for the abatement of odors including passive controls, active (forced-air) treatment systems, and chemical additives. Passive odor controls are being used as an interim measure to reduce odors in public areas during the development and implementation of the long-term odor abatement program. A combination of passive and active controls were selected for long-term control of odors exhausting from several areas along the PI system. A field pilot study was conducted to measure the effects of forced-air ventilation on airflows in the PI system. Optimal air ventilation rates for the PI were determined based on relationships between the sewer pipe diameter and slope, wastewater depth and velocity, sewer airflow/pressure rates, and data collected during the field pilot study. Inter-agency cooperation and public involvement have also played an important role in the development of the long-term odor abatement program.

Document Type: Research Article


Publication date: 2001-01-01

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  • Proceedings of the Water Environment Federation is an archive of papers published in the proceedings of the annual Water Environment Federation® Technical Exhibition and Conference (WEFTEC® ) and specialty conferences held since the year 2000. These proceedings are not peer reviewed.

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