This article is excerpted from the white paper, "The Removal of Arsenic from Potable Water," written by Frank Baumann, P.E., a former chief of the Sanitation and Radiation Laboratories branch of the California State Department of Health Services, for the Pureflow Filtration Division of California Environmental Controls Inc.
Arsenic's evil reputation is manifested in its old alchemists' symbol - a coiled serpent ready to strike. It is not surprising there is a great deal of anxiety over its possible presence in water, among other substances, we use on a daily basis. This article addresses the various unit operations available for its removal from water.