Department of Civil and Environmental Engineering, College of Engineering, Design Art, and Technology, Makerere University, Mary Stuart Road, Kampala-7062, Uganda; Royal Institute of Technology, Department of Inorganic Chemistry, Teknikringen, Stockholm, Sweden; Department of Land and Water Resources Engineering, Royal Institute of Technology (KTH), Brinellvägen, Stockholm, Sweden
Kalibbala, H.M., Department of Civil and Environmental Engineering, College of Engineering, Design Art, and Technology, Makerere University, Mary Stuart Road, Kampala-7062, Uganda, Department of Land and Water Resources Engineering, Royal Institute of Technology (KTH), Brinellvägen, Stockholm, Sweden; Wahlberg, O., Royal Institute of Technology, Department of Inorganic Chemistry, Teknikringen, Stockholm, Sweden; Plaza, E., Department of Land and Water Resources Engineering, Royal Institute of Technology (KTH), Brinellvägen, Stockholm, Sweden
Removal of natural organic matter and iron co-existing in water source is a challenge and a major problem in the developing world where the most commonly applied process in water treatment is pre-chlorination which results in early formation chlorinated by-products. Results from this study proved that horizontal roughing filter system with natural pumice is a promising option for pre-treatment of such waters. The filter recorded average reductions of total and ferrous iron of 39% and 89%, respectively, and trihalomethanes formation potential of 35% after 1 hour and 29% after 6 hours along the filter. Further reductions of 49% and 61% were achieved when the pretreated water was subjected to coagulation. © 2012 Copyright Taylor and Francis Group, LLC.
Co-existing; Developing world; Ferrous iron; Filter system; Horizontal flows; Natural organic matters; Pre-Treatment; Prechlorination; Roughing filtration; Trihalomethanes formation potential; Water source; Abrasives; Biological materials; Chemical water treatment; Coagulation; Developing countries; Iron; Chemicals removal (water treatment)
