| 摘要 |
A system is provided for recovering catalytic precious metals from aqueous galvanic processing solutions. The system comprises at least one holding tank, and at least one filtration unit, wherein the holding tank holds the galvanic processing solution and the filtration unit comprises ultrafiltration means and wherein the filtration unit is in hydraulic connection with the holding tank. The filtration unit is capable of providing a permeate stream having a reduced concentration of catalytic precious metal relative to the feed of the filtration unit and a concentrate stream with increased concentration of catalytic precious metal relative to the feed of the filtration unit. The system comprises at least one heat-exchanger hydraulically arranged between the holding tank and the filtration unit, being capable to limit the average temperature TRI of the aqueous galvanic processing solution to ≤ 50°C, preferably ≤ 45°C, more preferably ≤ 40°C prior to entering the filtration unit. |
