Predicting the Environmental Impact and Sustainability of Irrigation With Coal Mine Water
Commercial scale field trials and modelling of centre pivot irrigation with gypsiferous and sodium sulphate mine water, covering crop, soil and aquifer effects for mines and regulators.
by J.G. Annandale, Y.G. Beletse, P.C. de Jager, N.Z Jovanovic & J.M. Steyn – University of Pretoria, N. Benadé – NB Systems, S.A. Lorentz – University of Kwazulu Natal, F.D.I. Hodgson, B. Usher, D. Vermeulen – Institute for Groundwater Studies (University of the Free State), M.E. Aken – Anglo Coal Environmental Services | July 2006
Irrigation with calcium and sulphate rich mine water proved feasible and sustainable over eight years at a Mpumalanga colliery, with no significant impact on soil, surface water or groundwater. Sugarbeans, wheat, maize, potatoes and pastures were grown on a commercial scale. High calcium and magnesium suppressed potassium uptake, and waterlogging from poor site selection was the main problem.
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