Device for increasing ph of an aqueous stream

Details Device for increasing ph of an aqueous stream Device for increasing ph of an aqueous stream

C - Chemistry, Metallurgy

02

F

C02F 1/66 (2006.01) B01J 8/24 (2006.01) C02F 1/68 (2006.01)

Patent

CA 2391870

A device is provided for increasing the pH of an acidic aqueous stream, which may result from commercial activity in petroleum, mining, metal finishing and food processing sectors, among others. A container defines an upright reactor portion with a cross-section that increases upwardly, along with inlet and outlet conduits connected to an inlet and an outlet between which the reactor portion is located. The conical portion contains a bed of substantially water-insoluble alkaline salt particulate, such as MgO, the bed being such that, when the pH of the inflowing aqueous stream is below 7, contact between the particulate and the aqueous stream will raise the pH of the outflowing stream to a level above that of the inflowing stream.

La présente invention concerne un dispositif d'augmentation du pH d'un courant aqueux acide, pouvant provenir de l'activité commerciale des secteurs du pétrole, des mines, du finissage de métaux, et du conditionnement des aliments, entre autres. Un contenant forme une partie de réacteur verticale avec une section qui grossit vers le haut, des conduits d'entrée et de sortie étant raccordés à une entrée et à une sortie entre lesquelles est située la partie du réacteur. La partie conique contient un lit de matière particulière alcaline saline pratiquement insoluble dans l'eau, notamment le MgO, ce lit étant tel que, lorsque le pH du courant aqueux entrant est en-dessous de 7, le contact entre la matière particulaire et le courant aqueux fait augmenter le pH du courant sortant à un niveau supérieur à celui du courant entrant.

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