A method for membrane filtration purification of suspended...

C - Chemistry – Metallurgy – 02 – F

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C02F 1/44 (2006.01) B01D 69/08 (2006.01) B01D 71/26 (2006.01)

Patent

CA 2397580

A method for membrane filtration purification of suspended water, comprising filtering the suspended water under an external pressure through a porous hollow fiber membrane comprising a polyolefin, a copolymer of olefin and halogenated olefin, halogenated polyolefin or a mixture thereof and having an open area ratio in an outer surface of not less than 20 % and a pore diameter in a minimum pore diameter layer of not smaller than 0.03 µm and not larger than 1 µm.

L'invention concerne un procédé de purification d'une eau de suspension par filtration, consistant à soumettre l'eau de suspension à un filtrage sous pression extérieure faisant appel à une membrane poreuse en fibres creuses constituée d'une polyoléfine, d'un copolymère comprenant une oléfine et une pléfine halogénée, ou d'un mélange de ces composés, et caractérisée par une proportion d'ouvertures sur sa surface externe supérieure ou égale à 20 % et par un diamètre des pores au niveau d'une couche minimum compris entre 0,03 et 1 mu m.

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