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Removing arsenic from groundwater
Author(s) -
Chwirka Joseph D.,
Thomson Bruce M.,
Stomp John M.
Publication year - 2000
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.1551-8833.2000.tb08911.x
Subject(s) - arsenic , adsorption , groundwater , hydroxide , water treatment , ion exchange , chemistry , arsenic contamination of groundwater , environmental science , waste management , environmental chemistry , environmental engineering , inorganic chemistry , engineering , ion , geotechnical engineering , organic chemistry
To meet the new arsenic MCL, Albuquerque, N.M., will construct its first arsenic treatment facility. Three treatment technologies for removing arsenic from groundwater in Albuquerque, N.M., were compared: ion exchange (IX), iron hydroxide coagulation followed by microfiltration (C/MF), and activated alumina (AA) adsorption. For an 8,700‐m 3 /d (2.3‐mgd) arsenic treatment facility, capital costs of the three processes were similar: $5.2 million, $4.1 million, and $4.6 million, respectively. Annual operations and maintenance costs were $447,000, $273,000 and $444,000, respectively. The principal differences were the result of large salt requirements for the IX process and the need to reduce the pH to 6 for AA adsorption, followed by base addition to stabilize the water. The C/MF system was selected for a demonstration facility in Albuquerque.