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.

Contact an Expert

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

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.

Go to Mixed Bed

Equipment Details

Features and Benefits

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.

Technical Information

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

Get In Touch with Us

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

Ovivo Ultra-Pure Water+ by Ecolab

Provide your contact information and submit this form to speak with a sales representative.