Filtration plants - Import export

Dye and product desalination Membrane filtration plants of OSMO Membrane Systems GmbH offer various solutions for desalination. Hereby, we offer all stages of projecting – from proof of concept to costumized plant – from a single source. In times of increasing energy and raw material costs, desalination can be a remarkable contribution in the process chain, to cut running costs and to conserve resources. At the production of dyes, e.g. azo dyes, optical brightening agents (OBA) and so on, nano filtration plants are used for retention of pigments and elution of the present neutral salts (Na+Cl-). At the first production step, the content of sodium chloride will be reduced by dia filtration and addition of deionized water until the required salinity of permeate is reached. The proper selection of the NF membrane achieves the highest possible dye retention at the remaining NF concentrate. After this step, dye can be concentrated to the required values. So, different steps of production c

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. 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