Umkehrosmoseanlage im Kraftwerk Schkopau: Erste Betriebserfahrungen

Under the supply contract between BUNA AG and VEBA Kraftwerke Ruhr AG, power plant Schkopau will supply a total of 200 t/h of process steam. Condensate produced will not be returned. For reasons of environmental protection and costs, the only option was the treatment of water from the 100 m remote river Saale, considering the high amount of water required. The design is marked by the composition of the Saale water: the chloride and above all sulphate concentrations contributed to the high conductivity of 1100 to 2200 μS/c. The organic carbon, given here as TOC (total organic carbon) was encountered mostly in a solved condition and could bc verified to between 7 and 19 mg/. Suspended solid matter ranged between I and 80 mg/. The acid capacity KS4.3 at 3 mmol/ was the reason for the installation of slow decarbonization plant with lime milk and flocculant as a first treatment in order to be able to use the water for the operation of the cooling tower.