oa Civil Engineering = Siviele Ingenieurswese - Use of second-grade water for supplementary irrigation in the Pretoria-Witwatersrand-Vaal Triangle area
Recycling of water through domestic and industrial consumers could lead to more efficient use of water but the disposal of the final saline effluent presents a problem. The use of effluents for supplementary irrigation purposes suggests itself as a possible means of disposing of the soluble salts they contain. Such a scheme is feasible provided water, plant and soil are compatible, drainage is adequate and irrigation return flows do not enter the Vaal river above the Barrage.
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