The use of granular activated carbon for the treatment of impounded surface water

• Published in: Water Science & Technology Vol. 39; no. 10-11; pp. 197 - 200
• Main Authors: Pryor, M.J., Nozaic, D., Freese, S.D., Rajagopaul, R.
• Format: Journal Article Conference Proceeding
• Language: English
• Published: Oxford Elsevier Ltd 01-01-1999; Pergamon Press; IWA Publishing
• Subjects: Activated carbon; Adsorption; Agricultural management; Agricultural runoff; Agricultural wastes; Applied sciences; Atrazine; BDOC; Biological activity; Biological effects; biologically activated carbon; Catchment area; Chlorine; Contaminants; Drinking water and swimming-pool water. Desalination; Exact sciences and technology; GAC; granular activated carbon; Herbicides; Mineral nutrients; Nutrients; organic carbon; Ozonation; Ozone; Ozonization; Performance assessment; Pollutants; Pollution; Runoff; South Africa, KwaZulu Natal; South Africa, KwaZulu Natal, Inanda Dam; Surface water; Ultraviolet radiation; Wastewater; Wastewater discharges; Water treatment and pollution; Natal; South Africa(Republic); Africa; South Africa; GAC; BDOC; Adsorption; biologically activated carbon; granular activated carbon; organic carbon; Drinking water treatment; Ozonization; Granular material; Activated carbon; Surface water
• ISBN: 0080428185; 9780080428185
• ISSN: 0273-1223; 1996-9732
• DOI: 10.1016/S0273-1223(99)00276-0

Increased levels of nutrients and pollutants are expected in the Inanda Dam (KwaZulu Natal, South Africa) as a result of wastewater effluent discharge, informal settlements and agricultural runoff in the catchment. Contaminants of atrazine and 2-methyl isobomeol were dosed into the feed water of a granular activated carbon (GAC) pilot plant to assess the performance of different process options for the treatment of Inanda Dam water. It was found that the use of ozonation and GAC did not result in increased levels of biological activity as expected. The use of ozone in conjunction with GAC is however recommended as significant benefit was obtained in the reduction of UV absorbance, chlorine demand and concentrations of other micro-contaminants.