Electrodeionization (EDI) is a modern water treatment process that removes ions from water using an electric field and ion exchange membranes, without using chemicals. EDI units are usually installed after reverse osmosis units to achieve demineralized water of an especially high purity.
This technology is suitable for industries and companies that need ultrapure water of stable quality – for example in the electronics, pharmaceutical and medical sectors and in energy production.
RO + EDI – a modern alternative to conventional cation-anion ion exchange units
Traditional cation and anion exchange units require regular regeneration with chemicals, which entails the need to store, handle and dispose of concentrated chemicals.
The combination of a reverse osmosis unit and an EDI unit offers a safer and significantly more environmentally friendly alternative:
- Compact solution – the units take up little space
- Reliability – less maintenance and lower operating costs
- Environmentally friendly – no need for regeneration with chemicals
- Continuous process – ensures stable and consistent water quality
- Water quality – treated water quality up to 18 MOhm·cm
- Low operating costs – energy is the only major cost
- Proven reliability – a technology widely used around the world
- Operation – a fully automatic solution.
- Investment need – comparable to traditional technologies
We offer EDI units for industrial and other consumers that require ultrapure water.
Examples of using EDI
- Electronics industry – in the production of semiconductors, microchips and LCD screens, where even small ionic contamination can cause defects.
- Pharmaceutical and biotechnology industry – in the production of medicines, vaccines and laboratory tests, where ultrapure water is required.
- Medical facilities – water supply for sterilization equipment and laboratory analysis processes.
- Energy and boiler houses – feed water for high-pressure boilers and steam turbines, to prevent limescale and corrosion.
- Food and beverage industry – to ensure a high hygiene standard in production processes.
- Laboratories and research institutions – for analyses and experiments that require demineralized water of stable quality.
