C - Chemistry – Metallurgy – 02 – F
Patent
C - Chemistry, Metallurgy
02
F
C02F 1/64 (2006.01) B01D 21/00 (2006.01) G03D 3/02 (2006.01) G03D 13/00 (2006.01)
Patent
CA 2261557
Spent colour photography liquids comprising alkaline developer liquid and fixer liquid loaded with iron ions generate a dischargeable effluent, in which clogging of drains and conduits with precipitated iron oxides is minimized or avoided; the liquids are fed through separate feed ports into a vessel to form a liquid bath, the feed ports being isolated from each other and from the liquid bath; liquid effluent is pumped from the bath to form an effluent flow; preferably the pumping employs a suction generated by flow of a carrier liquid such as water through a venturi passage, whereby the liquid effluent is entrained in the flowing water and discharged under pressure, the precipitated iron oxides being retained in a dispersed non-clogging state.
Brunelle Denis
Gravel Bernard
Ren Jian Min
Riviere John L.
Metafix Inc.
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
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