South Africa’s Eskom will use GE’s water and wastewater technology for the Kusile Power Plant, a coal-fired power plant located in Nkangala district municipality within the Mpumalanga province.

Once fully operational, the power plant is expected to be one of the world’s largest coal-fired power plants. South Africa, at times known for often facing drought conditions, has limited freshwater supply, and GE’s technology will provide maximum water reuse for the plant. GE’s equipment will filter approximately 250 million liters of water per day to be used in the power plant.

Under the terms of $40 million contract, GE will provide water treatment technology, including that for boiler feed water treatment for ultrapure water, six condensate polishing plants and wastewater treatment.

The boiler feed water treatment will consist of ultrafiltration, cation exchange, degasification to remove carbon dioxide; anion exchange followed by a mixed bed polishing system and then a degasifier to remove oxygen. This system will produce ultrapure water suitable to feed a super critical boiler. In addition, GE is supplying six condensate polishing plant units, which will polish 1,760 tons per hour of condensate water. Finally, to treat the brine generated by the flue gas process, a two-train evaporator and a crystallizer will convert brine to a dry salt suitable for disposal.

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