A rhodium-ruthenium resource recovery and water reuse process for electroplating rhodium-ruthenium cleaning wastewater

Abstract

The invention discloses a rhodium-ruthenium resource recovery and water reuse process for rhodium-plating ruthenium cleaning wastewater, comprising the following steps: (1) collecting rhodium-ruthenium-plating cleaning wastewater; (2) adding a regulator to the process described in step (1). in the rhodium-ruthenium electroplating cleaning wastewater; (3) pumping the rhodium-plating ruthenium cleaning wastewater in step (2) into a special ion exchange tank for rhodium-ruthenium through a pump to obtain the adsorbed liquid and the saturated adsorption saturation resin; (4) the liquid obtained in the step (3) enters the cation resin tank and the anion resin tank in turn, and then enters the cleaning tank of the production line after passing through the germicidal lamp for reuse; (5) obtains in the step (3) The rhodium resin and the ruthenium resin are separated from the saturated resin by the resin separator; and then the rhodium resin and the ruthenium resin are respectively fed into the resin residue obtained by the pyrolysis reactor. The invention can directly process in the electroplating rhodium and ruthenium workshop, carry out resource recovery, and realize the reuse of rhodium and ruthenium electroplating cleaning wastewater.

Description

A kind of rhodium-ruthenium resource recovery and water reuse process of electroplating rhodium-ruthenium cleaning wastewater technical field The present invention relates to the cleaning wastewater treatment technical field of electroplating rhodium ruthenium, more specifically, relate to a kind of electroplating rhodium ruthenium clear The rhodium and ruthenium resource recovery and water reuse process of washing wastewater. Background technique Electroplating rhodium ruthenium adopts the rhodium ion of 1.5g / L~2.0g / L and the ruthenium ion of 0.15g / L~0.2g / L to required workpiece For electroplating, the coating of the workpiece after electroplating is mainly rhodium ruthenium alloy, and its function mainly plays the role of wear resistance and brightness. The workpiece is washed and dried to become the finished product. The cleaning water for electroplating rhodium ruthenium generally contains 10 to 20 mg / L of rhodium ions and 0.1 mg / L of rhodium ions. L~0.2mg / L rut...

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Problems solved by technology

Due to the low pH value of the waste water in the recovery tank, long-distance transportation causes a very large environmental risk. The subsequent cleaning water of the recovery tank is discharged into the sewage treatment station, and the waste water that meets the standard is discharged into the natural environment after adding alkali chemical neutralization and precipitation In the environment, this not only wastes precious metal rhodium and ruthenium and water resources, but also wastes chemicals, and at the same time, there is a certain risk to the environment because of liquid transfer

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