Continuous Deionization (CDI)

Deionization is the process of removing ions from water, most commonly through an ion exchange process.

We offer electrodeionization, mixed and packed bed systems. Our CDI® (Continuous De-Ionization) system is a chemical-free process for producing high-purity water using ion exchange membranes, resins and electricity. The absence of chemicals makes this a popular process for general industry, pharmaceutical and microelectronics use.

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Contact Us

For more information about continuous deionization, contact the Information Desk, Monday through Friday, 8 a.m. to 5 p.m., Eastern Standard Time: 1.866.926.8420 or 1.724.772.1402 or information.water@siemens.com

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Continuous Deionization Case Study

Biopharm Company Upgrades 2-pass Reverse Osmosis System to Improve Quality of USP Purified Water

A veterinary pharmaceutical firm in the Midwest upgraded a USP Purified Water system that was not consistently producing water of adequate quality – both conductivity and microbial. The customer did not want to use chemicals to regenerate ion exchange beds and is located far from any service deionization facilities.

Read Full Case Study

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Featured Continuous Deionization Products and Services

Process Water CDI H and P Series Replacement Modules
Process Water S-HP CDI
PWS Compact CDI
CDI-LX™ Continuous Electrodeionization - CEDI Systems