ARTICLE CATEGORY

RO + EDI and EDI System Guides

Technical guidance for continuous deionization, EDI feed-water requirements and high-purity water process selection.

ARTICLES

EDI articles.

Industrial water-treatment piping and membrane equipment during factory assembly

EDIOctober 10, 20269 min read

Membrane Degassing Before EDI: How to Specify Carbon Dioxide Removal

Membrane degassing can reduce dissolved carbon dioxide in RO permeate before electrodeionization when the measured gas load threatens the selected EDI module's feed envelope. A sound specification couples water chemistry with the contactor's liquid conditions, vacuum or sweep-gas utilities and a credible residual-gas test. Low conductivity alone does not establish an acceptable EDI feed.

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Industrial RO and EDI water polishing equipment with process piping

EDIOctober 9, 20269 min read

EDI vs Mixed-Bed Ion Exchange: Continuous Polishing Compared

EDI and mixed-bed ion exchange can both support high-purity industrial water duties, but they have different feed-water assumptions, operating routines and project interfaces. The right choice follows the approved point-of-use requirement and the quality of the upstream RO permeate.

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Industrial water treatment equipment and process piping for continuous high-purity water polishing

EDISeptember 24, 202614 min read

EDI Water Treatment System: How It Works, Feed Water Requirements and Industrial Applications

An EDI water treatment system uses ion-exchange media, ion-selective membranes and direct current to continuously polish correctly conditioned RO permeate. It is a high-purity water stage, not a raw-water treatment method. Good results depend on upstream RO performance, feed-water limits, monitoring, distribution design and the agreed product-water requirement.

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Industrial RO and EDI water treatment equipment in a lithium battery pure-water project setting

EDISeptember 24, 202613 min read

RO + EDI Water Treatment System for Lithium Battery Manufacturing

An RO + EDI water treatment system can support lithium battery manufacturing where the confirmed use point needs stable, low-conductivity water and the upstream RO permeate can meet the EDI feed conditions. The correct configuration follows production use, water analysis, demand pattern and control requirements; it is not an automatic upgrade for every battery process.

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