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A nuisance compound commonly encountered in groundwater supplies is hydrogen sulfide (H2S), which causes an unpleasant rotten-egg smell in water at concentrations as low as 0.05 ppm. Treatment strategies for H2S removal often consist of air stripping and oxidation. Since hydrogen sulfide is a reactive gas, the aeration process will only remove that portion of the H2S that is in the gaseous state. One method of removing the remaining fraction of sulfide is by the conversion of sulfide to insoluble elemental sulfur by oxidation. Once oxidized, the colloidal sulfur causes high levels of turbidity (

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Edition: Vol. - No. Published: 06/16/2002 Number of Pages: 15File Size: 1 file , 480 KB