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Effect of Hydraulic Retention Time on Pretreatment of Sulfate-Laden Wastewater for Desulfurization-Denitrification Process

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Abstract:

In order to treat wastewater rich in sulfate and organic carbon, an anaerobic attached-growth bioreactor was set up. It was the pretreatment of desulfurization-denitrification process. At hydraulic retention time of 128h-6.2h, sulfate removal rate and sulfide generating rate took on initial increasing and subsequent decreasing. At hydraulic retention time of 7.7h-10.2h, the removals of sulfate and organic carbon, sulfide generating rate reached 95.79%, 80% and 58.82%, respectively. The results showed that the suitable hydraulic retention time in sulfate reduction stage for the pretreatment of desulfurization-denitrification process was 7.7h-10.2h.

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Periodical:

Advanced Materials Research (Volumes 113-116)

Pages:

536-539

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.113-116.536

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Online since:

June 2010

Authors:

Wei Li, Xiao Liang, Jian Guo Lin

Keywords:

Attached Growth, Hydraulic Retention Time (HRT), Organic Carbon, Pre-Treatment, Sulfate

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© 2010 Trans Tech Publications Ltd. All Rights Reserved

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