C - Chemistry – Metallurgy – 02 – F
Patent
C - Chemistry, Metallurgy
02
F
362/54
C02F 1/62 (2006.01) C02F 9/00 (2006.01) C22B 3/46 (2006.01) C22B 15/00 (2006.01)
Patent
CA 1214580
ABSTRACT OF THE DISCLOSURE An apparatus and method for removing copper ions from aqueous solutions comprising a pH adjustment tank for receiving the copper containing solution incorporating a pH control unit for monitoring and adjusting the pH thereof within a preselected range. The solution is agitated and a level sensing unit is provided for controlling the level of the solution in the receptacle between a preselected maximum and a minimum level. A pump operable in response to the level control unit is operative to pump the pH adjusted unit through a plurality of canisters disposed in serial communicating relationship each containing a removable cartridge of steel wool through which the pH adjusted solution flows at a controlled rate effec- ting an extraction of the copper ions therefrom to residual concentrations as low as one part per million and lower whereafter the treated solution is discharged to final treatment before discharge to waste. Each canister incorporates a steel wool cartridge which can readily be replaced and disposed of upon attaining saturation. The invention further contemplates the use of copper ion sensing means in the discharge out- let of the apparatus for signaling the concentration of copper ions in the discharge solution in addition to the use of selector flow valves for reversing the upstream and downstream positions of the plural canisters to maintain efficient operation.
430570
Arcilesi Donald A.
Peck John V.
Spearot Rebecca M.
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
Omi International Corporation
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