Method and reactor for purification of water

C - Chemistry – Metallurgy – 02 – F

Patent

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C02F 3/00 (2006.01) C02F 3/08 (2006.01) C02F 3/10 (2006.01) C02F 3/12 (2006.01) C02F 3/28 (2006.01)

Patent

CA 2074470

A method for water purification in which waste water is fed into a reactor containing carriers having a biofilm which promotes a desired conversion of impurites, using carriers which are particulate elements having a larger surface than smooth elements of the same dimension and having a density in the range 0.90 to 1.20, normally 0.92 till 0.98, particularly 0.92 to 0.96 kg/ dm3, wherein the carriers with biofilm are kept suspended in the water in a reactor for aerobic, anoxic or anaerobic water purification, comprising inlet and outlet tubes and optionally mixing means, and containing a large number of carriers for biofilm. This reactor is also comprised by the present invention.

Procédé d'épuration de l'eau selon lequel l'on introduit des eaux usées dans un réacteur contenant des porteurs à biofilm qui favorisent un certain type de conversion d'impuretés, les porteurs étant des éléments particulaires dont la surface est plus grande que celle des éléments lisses ayant les mêmes dimensions, et dont la densité est comprise entre 0,90 et 1,20, normalement 0,92 et 0,98, et en particulier 0,92 et 0,96 kg/dm3. On maintient en suspension les porteurs à biofilm dans l'eau dans le réacteur afin de permettre l'épuration aérobie, anoxique ou anaérobie de l'eau. Ledit réacteur comporte des tubes d'entrée et de sortie et éventuellement un dispositif mélangeur, et contient un grand nombre de porteurs à biofilm. On décrit également ce réacteur.

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