||Development of Low Cost Treatment Options for Arsenic Removal in Water Treatment Facilities.
G. R. Peyton ;
T. R. Holm ;
||Midwest Technology Assistance Center (MTAC), Champaign, Illinois.; Illinois Univ. at Urbana-Champaign. Dept. of Civil and Environmental Engineering.; Illinois State Water Survey Div., Champaign, Illinois.; Environmental Protection Agency, Chicago, IL. Region V.
||MTAC-TR06-03; EPA-X829218-01; ISWS-CR-2006-09
Water treatment ;
Ground water ;
Cost effectiveness ;
Drinking water ;
Maximum contaminant level(MCL)
||Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.
Many water treatment plants that utilize groundwater will be burdened with additional expenses in order to meet the new Maximum Contaminant Level of 10 :g/L for arsenic. The objective of this project was to develop an inexpensive treatment option for arsenic removal, suitable particularly for small communities, by extending and optimizing the Fenton chemistry that already occurs during iron removal at many drinking water treatment plants. Improvement of the efficiency of arsenic (III) oxidation to arsenic (V) by hydrogen peroxide addition and addition of more iron to furnish more hydrous ferric oxides (HFO) for adsorption of the arsenic allow removal of arsenic from 40 to 5 :g/L (compared to 30 :g/L during normal iron removal) in high-DOC (13 mg C/L) groundwater, while increasing chemical costs only slightly, and requiring no large capital equipment costs.