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Preventing Haloform Formation in Treated Surface Water: A Case Study
Author(s) -
Argaman Yerachmiel,
Shelby Sam E.,
Davis Jan Suddath,
Betts Stephen C.,
Hufft Raymond J.
Publication year - 1984
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.1551-8833.1984.tb05320.x
Subject(s) - trihalomethane , chemistry , effluent , chlorine dioxide , disinfectant , chloramination , flocculation , water treatment , chlorine , filtration (mathematics) , chloramine , environmental chemistry , activated carbon , pulp and paper industry , adsorption , environmental engineering , environmental science , inorganic chemistry , organic chemistry , statistics , mathematics , engineering
Treatment of a surface water was investigated in bench‐scale and pilot‐plant tests that consisted of flocculation, settling, filtration, granular activated carbon (GAC) treatment, and ozonation. Either GAC treatment or ozonation was necessary to meet the color limit of 15 Co–Pt units. Disinfection with a free chlorine residual without formation of high trihalomethane (THM) levels could only be achieved on GAC‐treated effluent. Application of chlorine dioxide resulted in very low THM levels. The required dosage, however, was high unless preceded by GAC treatment. Chloramine could be used as a disinfectant with any of the treatment schemes without resulting in THMs or other known public health problems.