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How Does My Hydraulic Retention Time Affect Odor and Corrosion?

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A key component of any liquid phase odor control plan is the identification of the actual Hydraulic Retention Time (HRT) of the wastewater. Many municipalities record flow resulting in data that can be used to assist in the development of an odor control plan.

Consider a small lift station that operates as fill-draw. Usually the force main pump operates frequently in the morning and infrequently at night. This results in an HRT that can vary between a few hours during the morning high flow conditions and greater than 12 hours at low flow conditions. This variance in HRT is critical in determining the dosage rates of most liquid phase treatment products.

ECO2 SuperOxygenation technology sustains aerobic conditions by dissolving pure oxygen into wastewater to prevent the formation of H2S. The ECO2 system will monitor force main flow and introduce the appropriate amount of oxygen as D.O. to satisfy the HRT.

Document Type: Research Article


Publication date: January 1, 2012

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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 These proceedings are not peer reviewed.

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