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Effect of Sulfate and Organic Matter on the Hydrogen Sulfide Formation in Biofilms of Filled Sanitary Sewers
Per Halkjær Nielsen and Thorkild Hvitved-Jacobsen
Journal (Water Pollution Control Federation)
Vol. 60, No. 5 (May, 1988), pp. 627-634
Published by: Water Environment Federation
Stable URL: http://www.jstor.org/stable/25043547
Page Count: 8
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Sulfide formation rates were measured in a pressure main transporting mainly domestic wastewater. An empirical equation for the sulfide flux from the sewer biofilm depended on soluble chemical oxygen demand (COD) concentration in the wastewater with a power near 0.5. This empirical equation was confirmed through biofilm reactor investigations and was compared with other predictive equations. The maximum possible surface flux from the biofilm was calculated for typical values for biofilm thickness and microbial activity, all based on obtained data. The amount and the quality of organic matter in the wastewater were important for the potential sulfide production in sewer biofilms. Furthermore, the spectrum or organics used for microbial sulfate reduction reflected the substrate on which the biofilms were grown. Sulfate was limiting for sulfate reduction only at relatively low sulfate concentrations in typical sewer biofilms. The sulfate reduction in these biofilms was modeled and was in good agreement with experimental results. The results were discussed in relation to the prediction of sulfide buildup in filled pipes.
Journal (Water Pollution Control Federation) © 1988 Water Environment Federation