Water Supply Vol 4 No 4 pp 89–94 © IWA Publishing 2004
Practical application of a combined treatment process for removal of recalcitrant NOM – alum and PAC
R. Fabris*, C.W.K. Chow** and M. Drikas***
*CRC for Water Quality and Treatment, Australian Water Quality Centre, PMB 3, Salisbury, South Australia, 5108 (E-mail: rolando.fabris@sawater.com.au)
**CRC for Water Quality and Treatment, Australian Water Quality Centre, PMB 3, Salisbury, South Australia, 5108 (E-mail: rolando.fabris@sawater.com.au)
***CRC for Water Quality and Treatment, Australian Water Quality Centre, PMB 3, Salisbury, South Australia, 5108 (E-mail: rolando.fabris@sawater.com.au)
ABSTRACT
Three different powdered activated carbons were applied in combination with aluminium sulphate to treat a high dissolved organic carbon (DOC) source water with a focus on improving natural organic matter removal. Treated water quality was analysed using absorbance at 254 nm, DOC, trihalomethane formation potential (THM-FP), rapid fractionation, C13 NMR and molecular weight distribution by high performance size exclusion chromatography. Carbon C and B offered equivalent DOC removal but carbon C was considered superior as treated water THM-FP was reduced. It is postulated that an organic fraction around 1000 Daltons is responsible for differences in THM-FP shown in the treated waters.
Full article (PDF Format)
PAY-PER-VIEW: Buy this article for £20.00 (IWA MEMBER PRICE: £15.00)
|
