Global Patent Index - EP 1117619 A4

EP 1117619 A4 2001-12-05 - PROCESS FOR DESTROYING CONTAMINANTS IN CONTAMINANT-CONTAINING AQUEOUS STREAMS AND CATALYSTS USED THEREFOR

Title (en)

PROCESS FOR DESTROYING CONTAMINANTS IN CONTAMINANT-CONTAINING AQUEOUS STREAMS AND CATALYSTS USED THEREFOR

Title (de)

VERFAHREN ZUR ZERSTÖRUNG VON KONTAMINANTEN IN WÄSSRIGEN FLÜSSIGKEITEN UND DAFÜR VERWENDETER KATALYSATOR

Title (fr)

PROCEDE DE DESTRUCTION DE CONTAMINANTS DANS DES COURANTS AQUEUX RENFERMANT DES CONTAMINANTS ET CATALYSEURS UTILISES A CET EFFET

Publication

EP 1117619 A4 (EN)

Application

EP 99940830 A

Priority

  • US 9917219 W
  • US 9561498 P
  • US 9735398 P

Abstract (en)

[origin: WO0007943A1] The process of this invention destroys contaminants in a contaminant-containing aqueous stream. The subject process comprises providing a contaminant-containing aqueous feed stream (30) including an initial amount of at least one of a group of contaminants including perchlorates, nitrates, and nitrites. The contaminant-containing aqueous feed stream includes a reducing agent (28). Next the reducing agent-containing, contaminant-containing aqueous stream is heated (22). Finally, the heated contaminant-containing aqueous stream is contacted with an oxidation-reduction catalyst (20) for a period of time sufficient for reducing the excess amount of any of the perchlorates, nitrates, and nitrites contaminants by at least about 90 %.

IPC 1-7 (main, further and additional classification)

C02F 1/70

IPC 8 full level (invention and additional information)

C02F 1/02 (2006.01); C02F 1/70 (2006.01)

CPC (invention and additional information)

C02F 1/02 (2013.01); C02F 1/70 (2013.01); C02F 2209/02 (2013.01); C02F 2209/03 (2013.01); C02F 2209/15 (2013.01); C02F 2209/40 (2013.01)

Citation (search report)

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

EPO simple patent family

WO 0007943 A1 20000217; AU 5460999 A 20000228; EP 1117619 A1 20010725; EP 1117619 A4 20011205

INPADOC legal status


2006-01-11 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20050604

2004-03-24 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20040205

2001-12-05 [A4] DESPATCH OF SUPPLEMENTARY SEARCH REPORT

- Effective date: 20011019

2001-12-05 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A4

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

2001-07-25 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20010305

2001-07-25 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

2001-07-25 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO

- Free text: AL;LT;LV;MK;RO;SI