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Verfahren zur Reinigung von Abwasser

Sewage purification by biological and denitrification stages reduces oxygen charge in sewage in denitrification stage.
 
: Kempter, B.; Sternad, W.; Troesch, W.

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Frontpage ()

DE 1999-19953249 A: 19991104
DE 1999-19953249 A: 19991104
WO 2000-EP10642 A: 20001028
DE 19953249 A1: 20010531
C02F0003
C02F0003
Deutsch
Patent, Elektronische Publikation
Fraunhofer IGB ()

Abstract
Die vorliegende Erfindung betrifft ein verbessertes Verfahren zur Klaerung von kommunalem Abwasser.

 

WO 200132565 A UPAB: 20010625 NOVELTY - In a process for purifying sewage by carrying out a biological purification stage and a denitrification stage, the oxygen charge of the sewage in the denitrification stage is reduced. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for sewage plant, especially for carrying out this process. USE - The process is used for purifying sewage (claimed). ADVANTAGE - Filamentous microorganisms interfere with mechanical-biological treatment by the activated sludge process, mainly because they cause frothing and hence inhibit sedimentation. Reducing the oxygen level in the denitrification stage prevents massive occurrence of these microorganisms.

: http://publica.fraunhofer.de/dokumente/PX-67485.html