The economic impact of changing water quality on irrigated agriculture in the lower Vaal and Riet Rivers
Calculation of peak oxygen demand in the design of full-scale nutrient removal activated sludge plants
The exceptional simultaneous removal of carbon, nitrogen and phosphorus in a simple activated sludge treatment system at Kingsburgh Wastewater Treatment Works
The production of an artificial soil from sewage sludge and fly-ash and the subsequent evaluation of growth enhancement, heavy metal translocation and leaching potential