{"id":4597,"date":"2025-09-22T10:06:48","date_gmt":"2025-09-22T08:06:48","guid":{"rendered":"https:\/\/decker-vt.de\/electrodeionization\/"},"modified":"2025-11-06T13:16:20","modified_gmt":"2025-11-06T12:16:20","slug":"electrodeionization","status":"publish","type":"page","link":"https:\/\/decker-vt.de\/en\/products\/electrodeionization\/","title":{"rendered":"Electrodeionization"},"content":{"rendered":"\n
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Electrodeionization, EDI systems for the production of ultrapure water<\/h1>\n<\/div>\n\n
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Electrodeionization ultrapure water is an application for the production of ultrapure water for industrial purposes (e.g. semiconductors, optics, hydrogen production). In contrast to a reverse osmosis system<\/a> or a demineralization system<\/a> this is not a single system, but a downstream system for the further purification of VE water<\/a> with a conductance of 3-5 \u00b5S\/cm to a so-called diluate with a conductance of up to 0.056 \u00b5S\/cm or 18.18 M\u03a9-cm. <\/p>\n\n\n\n

Some industrial processes (e.g. semiconductors, optics, hydrogen production) require an even purer water than demineralized water<\/a>, so-called ultrapure water. This is a further purified demineralized water with the lowest possible conductance of up to 0.056 \u00b5S\/cm or 18.18 M\u03a9-cm. The process essentially consists of a mixed bed exchanger that is surrounded by cationic and anionic ion exchanger membranes and where a continuous ion outflow is generated under current. The residual substances still contained in the demineralized water are captured by the mixed bed resin<\/a> in the electrodeionization process and immediately discharged due to the current flow. Chemical regeneration of the mixed bed resin does not take place. Diluate, i.e. ultrapure water, is produced at the end of the electrodeionization process. However, as electrodeionization is only functional under stable process conditions, it is a component that is not installed individually as a system, but requires additional system components. In particular, the flow rate and inflow loads must remain constant. <\/p>\n\n\n\n

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