Method and arrangement for purification of water

Details Method and arrangement for purification of water Method and arrangement for purification of water

C - Chemistry, Metallurgy

02

F

C02F 3/28 (2006.01) C02F 3/10 (2006.01) C02F 9/00 (2006.01) C02F 1/28 (2006.01) C02F 1/42 (2006.01) C02F 3/06 (2006.01)

Patent

CA 2377825

A method and means for cleaning surface or waste water in which the water is supplied to a sludge separator (14) for the separation of suspendable material. After the sludge separator the water is supplied to a biostep filter in which pollution is deposited at at least one filter body (42, 48) of permeable material of a type on which a bioskin may grow to create microprocesses without the permeability decreases and thereafter further to a sorbent filter (28, 40), whereby the water after this flows to a recipient. A pump (24, 124) is connected to the plant, preferably between the biostep filter (18, 42) and the sorbent filter (28, 40).

L'invention concerne un procédé et un système permettant de purifier les eaux de surface ou les eaux usées. Selon ce procédé, l'eau est amenée jusqu'à un séparateur de boues (14) permettant de séparer la matière en suspension. Ensuite, l'eau est cédée à un filtre bioétape dans lequel les impuretés sont déposées sur au moins un corps filtrant (42, 48) en matière perméable du type sur lequel peut croître une biopellicule pour créer des microprocessus sans baisse de perméabilité. Enfin, l'eau est cédée à un filtre adsorbant (28, 40) puis elle s'écoule jusqu'à un récipient. Une pompe (24, 124) est reliée à l'installation, de préférence, entre le filtre bioétape (18, 42) et le filtre adsorbant (28, 40).

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