Global patent index - EP 1051248 A1

EP 1051248 A1 2000-11-15 - METHOD FOR TREATMENT OF SLUDGE FROM WATER WORKS

Title (en)

METHOD FOR TREATMENT OF SLUDGE FROM WATER WORKS

Title (de)

VERFAHREN ZUR BEHANDLUNG VON SCHLAMM AUS WASSERVERSORGUNGSEINRICHTUNGEN

Title (fr)

TRAITEMENT DES BOUES DU RESEAU D'EAU DE VILLE

Publication

EP 1051248 A1 (EN)

Application

EP 98965919 A

Priority

  • SE 9802373 W
  • SE 9704887 A

Abstract (en)

[origin: WO9936173A1] The present invention relates to a method for treatment of water works sludge. Water works sludge is a waste product that at present is returned to the recipient that the water works takes its water from. This cannot continue in the long run but the water works sludge must be taken care of. Significant for the method according to the invention is that said water works sludge (2) in the first step is dried, that the works sludge (2) in the second step is air-dried to a dry matter content of 30-80 %. According to a preferred embodiment of the invention the dried water works sludge is further processed to an absorber, especially absorbers for oil or urine from cats, said dried water works being crushed or subjected to further drying.

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

B01J 20/24; A01K 1/015

IPC 8 full level (invention and additional information)

A01K 1/015 (2006.01); B01J 20/24 (2006.01); C02F 11/12 (2006.01)

CPC (invention and additional information)

A01K 1/0155 (2013.01); A01K 1/0154 (2013.01); B01J 20/24 (2013.01); C02F 11/12 (2013.01)

Citation (search report)

See references of WO 9936173A1

Designated contracting state (EPC)

DE ES FR GB IT

EPO simple patent family

WO 9936173 A1 19990722; AU 2193299 A 19990802; EP 1051248 A1 20001115; JP 2002509022 A 20020326; SE 511130 C2 19990809; SE 9704887 D0 19971229; SE 9704887 L 19990630

INPADOC legal status

2004-11-17 [18D] DEEMED TO BE WITHDRAWN

- Ref Legal Event Code: 18D

- Effective date: 20040513

2002-12-18 [17Q] FIRST EXAMINATION REPORT

- Ref Legal Event Code: 17Q

- Effective date: 20021104

2000-11-15 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 20000705

2000-11-15 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): DE ES FR GB IT