Premium
Source water and microfiltration plant manganese control study
Author(s) -
Lewis Daniel Olin,
Ladner David A.,
Karanfil Tanju
Publication year - 2013
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 - 10.5942/jawwa.2013.105.0108
Subject(s) - manganese , potassium permanganate , turbidity , microfiltration , trihalomethane , water treatment , permanganate , chemistry , environmental chemistry , filtration (mathematics) , environmental science , environmental engineering , pulp and paper industry , inorganic chemistry , membrane , ecology , biochemistry , statistics , mathematics , organic chemistry , engineering , biology
A combined field and laboratory manganese study was conducted for the Startex‐Jackson‐Wellford‐Duncan Water District in Wellford, S.C. Through source water characterization, it was found that biochemical processes in the river affected manganese concentrations more than any processes in the lake feeding the river. Because measures taken in the lake would not control manganese at the plant intake, in‐plant treatment was required. Bench‐top experiments evaluated three treatment trains: potassium permanganate (KMnO 4 ) direct oxidation followed by microfiltration (MF), manganese‐coated media bed before MF, and manganese‐coated media bed after MF. All processes removed manganese, with the media bed processes consistently achieving < 0.004 mg/L and KMnO 4 oxidation reaching as low as 0.008 mg/L Mn. Turbidity, organic carbon, and trihalomethane formation potential removals were comparable, but the process of media bed following the filter exhibited the highest rate of membrane fouling. This study provides a holistic understanding of manganese source and treatability that should prove useful to utilities with similar manganese issues.