Electrodeionization Systems
- Description
Description
ADVANTAGES OF THE EDI SYSTEM
- EDI units are simpler than mechanically typical renewable ion exchange systems
- EDI units can operate 24/7 without needing to wait for deionizing regeneration.
- While the product water quality does not change over time in EDI systems, whereas in renewable ion removal, the product water quality decreases as the resin begins to move into the saturation phase.
- The most obvious benefit of EDI systems is the elimination of the regeneration process and the absence of hazardous regeneration chemicals – acids and caustics.
- EDI systems do not have regeneration labor and chemical costs, instead they consume a small amount of electricity. The EDI concentrate (or rejected) stream is at a high concentration of 5 to 20 times, since it contains only water-to-feed pollutants, it usually expels these pollutants without the need for treatment, or is used in other processes.
- With the elimination of hazardous chemicals, it can increase workplace health and safety. Nowadays, with increasing regulatory effects, working areas, storage, use, neutralization and removal of hazardous chemicals cause additional costs such as documentation and surveillance to comply with the conditions set by law.
- Since most of the impurities in the water are dissolved salts, deionization generally produces high-purity water close to pure water, which is fast and prevents sedimentation as a result of precipitation.