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Machine translation
1. (WO1979000640) SYSTEM FOR PROCESSING USED WATERS BY THE BIOLOGICAL PROCESS OF ACTIVATED SLUDGE
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1979/000640    International Application No.:    PCT/CH1979/000020
Publication Date: 06.09.1979 International Filing Date: 08.02.1979
IPC:
C02F 3/12 (2006.01)
Applicants:
Inventors:
Priority Data:
1790/78 18.02.1978 CH
Title (EN) SYSTEM FOR PROCESSING USED WATERS BY THE BIOLOGICAL PROCESS OF ACTIVATED SLUDGE
(FR) INSTALLATION DE TRAITEMENT DES EAUX USEES PAR LE PROCEDE BIOLOGIQUE DES BOUES ACTIVEES
Abstract: front page image
(EN)The system comprises, besides an aeration zone and a clarification zone separated by a vertical wall (14), at least an intermediate filtering-flocculation zone limited by the vertical wall (14) and an oblique wall (12) under the clarification zone (11). Under this filtering-flocculation zone is a concentration zone (13) of the sludge limited by the vertical wall (14) and an oblique wall (10) of the basin of which the slope of 60 approximately is the same as that of the wall (12) and of about the same height. The width of the horizontal passages between the walls is such that the current of water and sludge which goes through them tends to be laminar. According to one alternative of execution the zone of concentration of the sludge does not communicate directly with the aeration zone, but through an outer conduit which brings the concentrated sludge into the aeration zone.
(FR)L"installation comprend, en plus d"une zone d"aeration et une zone de clarification separees par une paroi verticale (14), au moins une zone intermediaire de filtration-floculation limitee par la paroi verticale (14) et une paroi oblique (12) en-dessous de la zone de clarification (11). En-dessous de cette zone de filtration-floculation se trouve une zone de concentration des boues (13) limitee par la paroi verticale (14) et une paroi oblique (10) du bassin dont la pente d"environ 60 est la meme que celle de la paroi (12) et approximativement de meme hauteur. La largeur des passages horizontaux entre les parois est telle que le courant d"eau et de boues qui les traverse tend a etre laminaire. Selon une variante d"execution la zone de concentration des boues ne communique pas directement avec la zone d"aeration, mais par l"intermediaire d"un conduit exterieur qui ramene les boues concentrees dans la zone d"aeration.
Designated States:
Publication Language: German (DE)
Filing Language: German (DE)