Wastewater treatment apparatus and method

C - Chemistry – Metallurgy – 02 – F

Patent

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Details

C02F 1/463 (2006.01) C02F 1/46 (2006.01)

Patent

CA 2747555

An apparatus (20) for treating contaminated water has an electrocoagulation reactor (26) and a clarifier (30) to receive the effluent of the reactor. The reactor has a reaction vessel (48) having an inlet (58) and an outlet (62), a sacrificial anode (64), a rotatable cathode (68) and a non-sacrificial anode (66). A first gap (70) between the sacrificial anode and the cathode comprises a first water treatment zone. A second gap (74) between the cathode and the non-sacrificial anode comprises the second water treatment zone. The water flow path is from the inlet to the first treatment zone, then to the second treatment zone and then to the outlet. In the clarifier, the reactor effluent is separated into cleaned water and the contaminated sludge.

La présente invention concerne un appareil (20) destiné à traiter de l'eau contaminée comprenant un réacteur d'électrocoagulation (26) et un clarificateur (30) destinés à recevoir l'effluent du réacteur. Le réacteur comprend une cuve de réaction (48) ayant une entrée (58) et une sortie (62), une anode sacrificielle (64), une cathode pouvant être mise en rotation (68) et une anode non sacrificielle (66). Un premier espace (70) entre l'anode sacrificielle et la cathode comprend une première zone de traitement de l'eau. Un second espace (74) entre la cathode et l'anode non sacrificielle comprend la seconde zone de traitement de l'eau. Le chemin de circulation de l'eau part de l'entrée en direction de la première zone de traitement, et ensuite vers la seconde zone de traitement et ensuite vers la sortie. Dans le clarificateur, l'effluent de la réaction est séparé en eau propre et boue contaminée.

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