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Electro Deionization
Sustainable, Chemical-Free Demineralization
Electro Deionization (EDI) is a polishing step to remove low levels of dissolved contaminants from water, such as reverse osmosis permeate. Producing high purity demineralized water, similar in quality to that of a polishing mixed bed ion exchanger, but without the need for chemical regenerants.
Ovivo Ultra-Pure Water+ by Ecolab EDI solutions are a sustainable chemical-free system designed to match your specific water polishing application. They are capable of treating a variety of flows, with options to match your water quality needs.
Equipment Details
Ovivo by Ecolab EDI systems are ideal for a variety of industrial applications, where high purity water is required. They can be supplied in a standard, pre-engineered format or custom-built to your specifications.
Our EDI systems have numerous important features and benefits, including:
- Wide range of EDI modules for different flows and qualities
- Compact footprint compared to ion exchange systems
- Robust proven designs maximizing availability
- Fully automated for operation on unoccupied sites
- Chemical-free high purity water with a low carbon footprint
- An efficient chemical-free demineralization solution
- EDI is a sustainable technology that utilizes electricity and ion exchange resins to produce high purity demineralized water without the use of bulk chemicals. Our EDI systems are engineered to be water efficient, and the reject water stream can often be returned further up the process, minimizing water consumption.
Ovivo by Ecolab EDI systems offer a range of technical features and benefits including:
- High water efficiency
- High purity water without the use of chemicals
- Modular skidded design or mobile containerized units
- opsCTRL™ enabled to allow remote digital monitoring and diagnostics from mobile phone, tablet or PC
Our team works closely with all partners to assist with their water purification needs by providing:
- Feed studies
- Life cycle cost analysis
- Full design build support
- Process optimization
- Refurbishments and upgrades
How It Works
Electro Deionization
EDI is a simple and highly effective demineralized water polishing technology that uses a combination of interspersed ion selective membranes and ion exchange resins. As water passes through the ion exchange resin in the feed compartments, the dissolved contaminants are exchanged for hydrogen or hydroxide ions, producing high purity water.
A direct electrical current (DC) is applied across the module of ion exchange resins and ion selective membranes causing the removed contaminants to migrate across the resin and become trapped in the concentrate chambers formed by the ion selective membranes. The captured impurities then flow out with the concentrate stream.
Related Product
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Mixed Bed Ion Exchange
Mixed bed ion exchange is used to economically produce demineralized water for a wide variety of applications, such as final polishing, located downstream of a primary demineralization stage, or polishing high purity water recycle loops and condensate polishing.
Experienced Ultrapure Water Treatment Partners
- Decades of ultrapure water purification applications development
- Continuous innovation and extensive range of ultrapure water purification products
- Comprehensive experience assisting our partners in all phases of ultrapure water production
- Known for reliable, durable and high-quality system
- In-depth understanding of water treatment and technologies in the electronics and semiconductor industry