Abstract
The removal of hydrogen sulfide from groundwater supplies was investigated by using various catalysts and oxidants in bench‐scale jar tests that simulated assumed actual conditions in a water treatment plant. Variations in aeration rate, chemical dosage, recycled solids, pH, and detention time were also examined. A ferrous sulfate dosage of 9 mg/L reduced sulfide concentrations to 0.05 mg/L, largely owing to the catalytic effect of Fe(II). Peroxide, permanganate, and ferrate also lowered the sulfide concentrations, with more rapid kinetics than Fe(II). An economic analysis showed that Fe(II) is a cost‐effective alternative for sulfide removal. The other oxidants may also prove economical under certain conditions.
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