Environmental Technology

Coating colour recycling at paper and cardboard industries

During the production of coated paper, it has to be cleaned with water and so, waste water results with pigments of the coating color. Because of their properties, exisiting precipitation plants are working hard on these types of waste waters.

Streichfarben

Alternatively to precipitation plants, membrane filtration technologies can be used to recover these high-value coating pigments.

For that, the water with coating color pigments is circulated through the membrane plant until the required concentration is reached. The permeate is free of particles the CSB value is reduced significantly. It can know be handled by the precipitation plant, which is relief by the removing of the pigments.

The concentrate with coating color pigments will be recirculated into the production process.

Advantages:

  • Reduction of coating color and pigments consumption
  • Reduction of solid amounts in the waste water, which means reduction of operation costs

We use cookies on our website. Some of them are essential for the operation of the site, while others help us to improve this site and the user experience (tracking cookies). You can decide for yourself whether you want to allow cookies or not. Please note that if you reject them, you may not be able to use all the functionalities of the site.