Effluent precipitation and neutralization chamber

Details Effluent precipitation and neutralization chamber Effluent precipitation and neutralization chamber

1992-06-08

1993-07-20

Hruskoci, Peter

Liquid purification or separation

Processes

Making an insoluble substance or accreting suspended...

75713, 75733, 210724, 210738, 210199, 210207, 210248, 210912, 210919, 266170, C02F 166

Patent

active

052290093

ABSTRACT:
An effluent precipitation and neutralization chamber for mixing and neutralizing spent photographic developer and fixer. A baffle and long folded ribbons inside the chamber promote mixing of the developer and fixer. A source of iron ions such as fine steel wool is immersed in the fluids. Ion exchange between the steel wool and the photographic fixer recovers silver from the fixer. The desilvered fluid is diluted with wash water before it is discharged from the chamber. A wash water inlet tube is directly aligned with the discharge outlet opening in the chamber so that wash water can flow almost directly into the outlet tube to dilute the mixed and neutralized developer and fixer.

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