Power Industry Wastewater Treatment Medupi Power Station, Lephalale, Limpopo Province, RSA

How we created value

• Capacity: treating 10,440m3 of condensate per hour

• Operation: automated plant

• Many years of experience

Medupi - means ‘rain that soaks equipment, commissioning and osmosis, gas transfer membranes and parched lands’. setting the plant to work. Design electrodialysis to achieve the high of the water treatment plant was purity water required by the boilers. Background in part-based on a similar but Feed water as well as make-up and The Medupi Power Station is a coal smaller installation for the treated water is stored in glass lined fi red high pressure boiler system Komati Power Station. steel tanks. Condensate polishing designed to produce 4788MW of is provided by our sister total power or 798MW from each of The high pressure boilers require company Kennicott. its six boiler units. Source water for highly purifi ed water, requiring the boilers will be piped from a raw pretreatment of source water to The power station is currently water reservoir. remove dissolved organics and expected to cost over R100 Billion. suspended solids by clarifi cation and Medupi will be supplied by coal from Process organic scavenging. The clarifi er, a Exxaro’s Grootegeluk coal mine, Aqua Engineering SA is supplying Denslator, utilises inclined sheets, and located to the north of the site. a 26Ml/d water treatment plant. The the organic scavenger is resin-based Eskom has placed a contract with scope is the design of the plant (both ion exchange plant utilizing salt Exxaro to supply 14.6 MT coal per process and mechanical engineering), regeneration. The treated water then year for 40 years. supply and installation of all passes through ultrafi ltration, reverse

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092010