| 摘要 |
The present invention relates to a method for treating of plastic parts with a treatment solution comprising permanganate wherein the concentration of carbonate compounds in the treatment solution is set to a value less than 200 g/l by the removal of carbonate compounds from the treatment solution by freezing out and subsequent filtration wherein the treatment solution comprises sodium permanganate. The invention further relates to a device for an at least partial regeneration of a treatment solution comprising permanganate, which is used for treatment and/or etching of plastic parts by reducing of a concentration of carbonate compounds comprised in the treatment solution for the implementation of such a method, wherein the device comprises at least one cooling tank which is to be subjected to the treatment solution to be regenerated, and which exhibits a downstream filter device for separating the carbonate compounds from the treatment solution; and additionally the use of such a device for implementing such a method. |
