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Upstream H2S Scavenging Impact on the Wastewater Treatment Plant

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It has become common practice for refineries to scavenge H2S in crude shipments before transportation to the end user. One of the primary methods to scavenge H2S is through triazine chemistry programs. However, the use of triazine based programs has raised some concern recently on the potential impact downstream at the wastewater biological treatment plant.

To better understand the impact of these programs on the COD and ammonia removal, a study was conducted utilizing respirometry. Various refinery biomass samples were utilized to test the different triazine programs. The results of the study concluded that a typical refinery biomass will easily tolerate the upstream H2S scavenger programs.

Keywords: H2S scavengers; nitrification; refinery wastewater; respirometry; triazine

Document Type: Research Article


Publication date: January 1, 2009

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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 These proceedings are not peer reviewed.

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