Liquid purification or separation – Processes – Ion exchange or selective sorption
Patent
1985-07-18
1986-12-16
Hruskoci, Peter
Liquid purification or separation
Processes
Ion exchange or selective sorption
210694, 210725, 210727, 210912, 423 34, 423140, C02F 154
Patent
active
046295704
ABSTRACT:
A process is described for removing dissolved iron from an aqueous liquid containing iron in the form of a soluble complex with alkylenepolyamine polyacetic acids or salts thereof. The process comprises the steps of (a) adjusting the pH of said aqueous liquid to at least about 12.5, (b) adding sufficient quantities of a soluble calcium salt to facilitate the growth of insoluble iron hydroxide particles, and (c) separating the resulting insoluble mass containing iron hydroxide from the liquid effluent.
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Dowell Schlumberger Incorporated
Hruskoci Peter
White L. Wayne
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