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

2005-11-28

2008-05-27

Smith, Duane (Department: 1797)

Liquid purification or separation

With means to add treating material

With distinct reactor tank, trough or compartment

C422S140000, C422S261000

Reexamination Certificate

active

07378016

ABSTRACT:
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 MgSO, 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.

REFERENCES:
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patent: 3761534 (1973-09-01), Sun et al.
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patent: 57 002374 (1982-01-01), None
patent: 0918775 (1997-07-01), None
patent: 09187775 (1997-07-01), None
patent: WO 85/01280 (1985-03-01), None
Machine translation of JP 09187775, detailed description pp. 1-8, Jul. 1997.

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