ETA Recovery Process with Ion Exchange and Evaporation


Rhee I. H. , Ahn H. K. , Jung H. J.

9th WSEAS International Conference on Simulation, Modelling and Optimization, Budapest, Hungary, 3 - 05 September 2009, pp.31-32 identifier

  • Publication Type: Conference Paper / Full Text
  • City: Budapest
  • Country: Hungary
  • Page Numbers: pp.31-32

Abstract

The PWR plants have replaced a secondary side pH control agent to minimize the sludge production in the moisture drain and heater drain systems and the sludge transport into steam generator. The increase of pH in the secondary system water decreased the sludge deposit in steam generator and prolonged the runtime of ion exchange beds in the condensate polishing plant. The extended lifetime of ion exchange resin led to the reduction in the amount of regenerant used and regeneration waste produced. However the concentration of chemical oxygen demand and nitrogen in the regeneration waste was elevated due to the physico-chemical property of ethanolamine.