Continuous Electrodeionization (CEDI) Modules and Accessories

CEDI is a chemical-free process that utilizes ion exchange resins and electricity to produce ultrapure deionized water.

Green technology solutions have become a necessary part of our everyday lives. The power of green represents Siemens’ emphasis on unmatched, innovative water and wastewater solutions that allow you to make environmental sustainability a common business practice.

Under the Ionpure® brand, Siemens Continuous Electrodeionization (CEDI) modules are the most advanced generation of Ion Exchange technology. Our products are environmentally friendly, operate with continuous production, and have extremely low operating costs when compared to chemically regenerated ion exchange technology.

Currently, there are three lines of electrodeionization modules available: the VNX, the LX and the MX series. We also offer supplementary equipment ranging from DC Power Controllers to Piping Adapters to fit your system requirements.

What is Continuous Electrodeionization (CEDI)?

Continuous Electrodeionization (CEDI) is a chemical-free process that uses ion exchange resins and electricity to produce ultra-pure deionized water. CEDI utilizes no chemical regenerants and creates no hazardous wastes. The ion exchange resins are used primarily as a bridge to allow electric current to pass through the electrodeionization cell - this allows the modules to operate without any brine injection or concentrate recycle.

Click Here to see how CEDI works!*

Also, the ion exchange resins are used to "polish" the purified water stream by removing minute quantities of silica, carbon dioxide and other contaminants. Additionally, the resins are continually regenerated by the dissociated hydrogen and hydroxyl ions that have been created by the electric current.

Want to view our CEDI water purification system modules and accessories?*

*(Please note that you will be sent to an external Siemens web site.)

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Contact Us

For more information about continuous electrodeionization, please contact Customer Service at 1.866.876.3340 or ionpure.water@siemens.com.

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Continuous Electrodeionization Case Study

North American Utility’s Continuous Electrodeionization – CEDI – System Optimized

High-purity water is essential for producing steam that will not scale turbine blades with silica, minerals and other contaminants. A large power generating company in North America utilized a competitor’s continuous electrodeionization (CEDI) system for that purpose. Plant personnel had all but given up hope for the Competitors CEDI system. They needed technical expertise and a quick, dependable, leak-free solution.

Read Full Case Study

Continuous Electrodeionization Case Study

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Featured CEDI Products and Services

CEDI Components*
Ionpure® VNX High Flow CEDI Modules
Ionpure® LX-X Medium Flow CEDI Modules
Ionpure® LX-Z Medium Flow CEDI Modules
Ionpure® LX-HI Medium Flow CEDI Modules
Ionpure® LX-MK Medium Flow CEDI Modules
Ionpure® MX Low Flow CEDI Modules
Ionpure® DC Power Controllers
All Ionpure® CEDI Modules and Accessories

CEDI Systems
Vantage™ VNX Electrodeionization Systems
CDI-LX™ Electrodeionization Systems
Compact CDI® Electrodeionization Systems
H and P Series CDI® Systems

CEDI Services
ReMod - Upgrade and Parts Program

*(Please note that you will be sent to an external Siemens web site.)