Method for recovering suspended solids from residual effluents

C - Chemistry – Metallurgy – 02 – F

Patent

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Details

C02F 1/52 (2006.01) B01D 21/01 (2006.01) B01D 21/02 (2006.01) B01D 21/24 (2006.01) C02F 1/24 (2006.01) C02F 1/465 (2006.01) C02F 1/48 (2006.01) C02F 3/00 (2006.01) C02F 3/28 (2006.01)

Patent

CA 2677666

A process for the treatment of contaminated fluid and wastewater containing residuals from food processing and waste and residuals from animal feeding operations and effluent from the digestion of these residuals is disclosed The process is earned out in an enclosed tank using a separation procedure that maintains the state of the separated solids in the same state as they were upon introduction to the system, i.e, aerobic, anaerobic or anoxic, based on the condition of the solids upon introduction to the system The system utilizes rotary flow instead of rakes to harvest the solids from the effluent The process has applications in the recovery of emulsion in wastewater treatment and the operation of digesters for re- feeding to the digester.

L'invention concerne un procédé de traitement de fluide contaminé et d'eaux usées contenant des résidus provenant de la transformation des aliments ainsi que des déchets et des résidus provenant d'opérations et d'effluent d'alimentation d'animaux à partir de la digestion de ces résidus. Le procédé est effectué dans un réservoir fermé en utilisant une procédure de séparation qui maintient l'état des matières solides séparées identique à leur état lors de l'introduction dans le système, c'est-à-dire aérobie, anaérobie ou anoxique, en fonction de la condition des matières solides lors de l'introduction dans le système. Le système utilise un courant rotatif à la place de fourches pour recueillir les matières solides de l'effluent. Le procédé s'applique à la récupération d'émulsion dans le traitement d'eaux usées et au fonctionnement de digesteurs pour une réalimentation au digesteur.

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