Patent ID: 6254779
Filing Date: 2001-07-03
Classification: B01D,C02F,C07C,Y02W,Y10S

Abstract:
A process for the treatment of an effluent stream containing water and an organic acid species which is a stronger acid than carbonic acid, comprising:adding an alkaline medium to increase the pH of the effluent stream;subjecting the effluent stream to oxidation treatment to convert the organic acid species to carbon dioxide, water and carbonate and/or bicarbonate ions;separating the oxidised effluent stream into a concentrated aqueous stream rich in (bi)carbonate ions and cationic species derived from said alkaline medium and a depleted aqueous stream which is substantially free of said (bi)carbonate ions and said cationic species; andrecycling the concentrated stream for direct or indirect use as said alkaline medium.