Method for zero-effluent of industrial rinse water and...

C - Chemistry – Metallurgy – 25 – D

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C25D 21/08 (2006.01) B08B 3/04 (2006.01) C02F 1/00 (2006.01) C02F 1/02 (2006.01)

Patent

CA 2182667

This invention discloses a zero-discharging method of industrial rinsing water and its apparatus . In course of multi-stage intermittently countercurrent rinsing, the clean air is blown by air pump through pipes is blown into the bubblers which are set respectively in working bath, buffer bath and rinsing bath (each bath has at least one bubbler) to form tiny bubbles in solution and increase the evaporation of water in each of baths, thereby reaching the balance between the quantity of evaporated water and the quantity of replenished water, so zeor- discharge of waste water is realized.

Procédé d'élimination des effluents d'eau de rinçage industriel, et appareil pour sa mise en oeuvre. Un réservoir de traitement, un ou plusieurs réservoirs tampons et chacun des réservoirs de rinçage sont pourvus d'au moins un dispositif à bulles d'air respectif, et les dispositifs à bulles d'air respectifs sont alimentés en air pur par pompage par l'intermédiaire d'une canalisation afin de former dans les solutions un grand nombre de petites bulles d'air. Par conséquent, une certaine quantité d'eau s'évapore des solutions et l'on obtient un équilibre entre la quantité d'eau évaporée et la quantité d'eau introduite dans le réservoir de traitement, ce qui permet d'éliminer les effluents dans le processus intermittent de rinçage par courants contraires.

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