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Bench‐Scale Evaluation of Innovative Arsenic‐Removal Processes
Author(s) -
Smith Sheryl D.,
Edwards Marc
Publication year - 2002
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.1551-8833.2002.tb09541.x
Subject(s) - microfiltration , coagulation , water treatment , waste management , environmental science , arsenic , filtration (mathematics) , capital cost , environmental engineering , engineering , chemistry , membrane , mathematics , psychology , biochemistry , statistics , electrical engineering , psychiatry , organic chemistry
Microsand‐ballasted coagulation provided promising arsenic (As) removal in bench‐scale tests of simulated drinking waters; however, no synergistic benefits were observed when microsand‐ballasted coagulation was used as a pretreatment to microfiltration. Polymer was critically important to the performance of the microsand‐ballasted coagulation process. Although coagulation/microfiltration typically provided the best As removal at a given iron dose, microsand‐ballasted coagulation processes are likely to be a promising alternative method of As treatment for many utilities if expectations of lower projected capital and operating costs for microsand are proven valid.