Elektrodeionization (EDI)

WEIL Process - Electrodeionization for Further Desalination of Water

Electrodeionization (EDI) is an electrochemical process that combines the two processes of electrodialysis and ion exchange. This process allows for the extensive removal of ions and ionizable substances from water.

It uses semipermeable membranes and electrical voltage in cells with anion and cation-exchange resin. These cells are surrounded by anodes and cathodes. The method removes ions from water by flowing it through the cells and driving the ions through membranes. At the same time, it splits water into H+ and OH- ions to regenerate the resins without using chemicals. EDI is often used after reverse osmosis.

We advise you according to your specific requirements and work with you to develop customized solutions to further remove ions from your process and drinking water. Get in touch with us or fill out our questionnaire now. We look forward to hearing from you!



Our team of engineers and technicians will accompany you from the very beginning


We come to you! For the inventory and an on-site inspection, we will come by your place.

Water analysis

Whether it is softening, reverse osmosis, or adsorption on activated carbon - whichever method it is, a detailed analysis of the raw or wastewater is the basis of the further planning.

Reverse Osmosis System

Pilot test

A pilot test serves as the basis for the selection of the method and the dimensioning of the cleaning system. Weil Wasserbehandlung GmbH offers pilot tests, including measurement campaigns, at your site.

Evaluation and reporting

The results of the preliminary tests provide an objective basis for the decision on the optimal design of the water treatment.

We manufacture softening systems with individual valve control on an individual basis and according to your specifications

Water treatment plant

After a successful consultation, you will receive a made-to-measure offer for a water treatment system suitable for your requirements.

Delivery, installation and commissioning

The prefabricated system parts are delivered, assembled on site and put into operation by our engineers and technicians - also internationally.

Maintenance and repair service

Regular service with maintenance and repair work by our service technicians make our offer complete for you.

We are happy to advise you

Seven Kalbertodt
Managing Director