EP 0963351 A1 19991215 - METHOD OF CLEANING WASTEWATER

Title (en)

METHOD OF CLEANING WASTEWATER

Title (de)

VERFAHREN ZUR REINIGUNG VON ABWASSER

Title (fr)

PROCEDE DE NETTOYAGE DES EAUX USEES

Publication

EP 0963351 A1 19991215 (EN)

Application

EP 98908397 A 19980303

Priority

SE 9800375 W 19980303
SE 9700735 A 19970303

Abstract (en)

[origin: WO9839254A1] The invention relates to a method of improving the purification result in treating wastewater in biological aerated ponds by introducing after the aerated pond (2) and ahead of a following after-sedimentation (4), if any, a biofilm process (3) having a carrier material for microbial growth which is kept completely or partly in suspension and movement by blowing air into the process.

IPC 1-7

C02F 3/02; C02F 3/08

IPC 8 full level

C02F 3/02 (2006.01); C02F 3/12 (2006.01)

CPC (source: EP)

C02F 3/02 (2013.01); C02F 3/085 (2013.01); Y02W 10/10 (2015.05)

Citation (search report)

See references of WO 9839254A1

Designated contracting state (EPC)

DE ES FI FR GB PT SE

DOCDB simple family (publication)

WO 9839254 A1 19980911; AU 6643398 A 19980922; EP 0963351 A1 19991215; SE 508478 C2 19981012; SE 9700735 D0 19970303; SE 9700735 L 19980904

DOCDB simple family (application)

SE 9800375 W 19980303; AU 6643398 A 19980303; EP 98908397 A 19980303; SE 9700735 A 19970303