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The chemistry of reduced sulfur species and their removal from groundwater supplies
Author(s) -
Dohnalek David A.,
FitzPatrick Joseph A.
Publication year - 1983
Publication title -
journal ‐ american water works association
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.466
H-Index - 74
eISSN - 1551-8833
pISSN - 0003-150X
DOI - 10.1002/j.1551-8833.1983.tb05142.x
Subject(s) - ferrous , sulfide , sulfate , chemistry , sulfur , permanganate , hydrogen sulfide , aeration , groundwater , hydrogen peroxide , potassium permanganate , catalysis , environmental chemistry , inorganic chemistry , water treatment , environmental engineering , environmental science , organic chemistry , geology , geotechnical engineering
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.