RECOVERY OF AMMONIUM NITROGEN FROM WASTEWATER

Details for Australian Patent Application No. 2002240998 (hide)

Owner KEMIRA CHEMICALS OY MATTI ETTALA OY ENVITOP OY

Inventors AITTA, Eero

Pub. Number AU-A-2002240998

PCT Pub. Number WO2002/079087

Priority 20010651 29.03.01 FI

Filing date 27 March 2002

Wipo publication date 15 October 2002

International Classifications

C01C 001/02 Ammonia

C05C 003/00 Fertilisers containing other salts of ammonia or ammonia itself, e.g. gas liquor

B01J 049/00 Regeneration or reactivation of ion-exchangers

C02F 001/42 Treatment of water, waste water, or sewage - by ion-exchange

Event Publications

3 April 2003 Application Open to Public Inspection

  Published as AU-A-2002240998

19 February 2004 Application Lapsed, Refused Or Withdrawn, Patent Ceased or Expired

  This application lapsed under section 142(2)(f)/See Reg. 8.3(3). Examination has not yet been requested or directed for this application. Note that applications or patents shown as lapsed or ceased may be restored at a later date.

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