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AWWA WQTC50395
- Removal of Perchlorate at Low ug/L Concentrations by Sorption and Biological Reduction in an Activated Carbon Filter
- Conference Proceeding by American Water Works Association, 01/01/1999
- Publisher: AWWA
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Biological and chemical reduction processes, membrane processes, and ion exchange were investigated in this study for perchlorate removal via ion exchange and chemical reduction. The focus of this research is the biological reduction of perchlorate. Reduction processes are based on the fact that percholorate is thermodynamically unstable. The three primary objectives of this research were: to establish the ion-exchange capacity of Norit GAC for perchlorate; to establish that perchlorate at low : g/L concentrations can be biologically removed to below the limit of detection (2.0 : g/L) using biologically active carbon (BAC) filtration; and, to determine a correlation between nitrate concentration and level of perchlorate removal. Includes 7 references, table.
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