Abstract
Faced with environmental and water shortage problems at their Tutuka Power Station, Eskom, the South African Power Company approached Envig to assist them in finding a solution. This was achieved by the installation of a spiral reverse osmosis (SRO) plant to treat 12 Mld of mine water and spent cooling water. The result is a mine with no effluent problems, a new source of water for the power station and a treatment plant which produces significantly better cooling tower water and zero liquid discharge. Process details and 6 months of operational data are presented which demonstrate that good pretreatment and cleaning system design allow SRO to produce consistent high-quality water from this difficult and varying feed.
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