Provide PDF Format
AWWA JAW10897
- Journal AWWA - Preventing Haloform Formation in Treated Surface Water: A Case Study
- Journal Article by American Water Works Association, 04/01/1984
- Publisher: AWWA
$15.00$30.00
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. Includes 8 references, tables, figures.