RODI Systems Corp. Water and Wastewater Treatment Systems, Controls, Instrumentation
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HIGH PERFORMANCE WATER TREATMENT

Water Treatment for Hydrogen Production

Water Treatment for Hydrogen Production

The cost-effective production of green hydrogen inches ever closer to becoming a reality. RODI Systems has joined the effort by becoming a recognized supplier of water purification systems used in the production of hydrogen by electrolysis.

RODI Systems is now engaged with some of the leading suppliers of electrolyzer technology and green hydrogen project developers.  Our products and services related to hydrogen production include the following:
  • Design and fabrication of ultrapure water (UPW) treatment systems for providing feedwater to hydrogen electrolyzers.
  • Design and fabrication of seawater to ultrapure water treatment systems for providing feedwater to hydrogen electrolyzers.
  • Design and fabrication of electrodeionization systems for continuous polishing of electrolyzer recirculation loops.
  • Design and fabrication of membrane degassing systems for removal of unwanted gases (i.e., nitrogen) from electrolyzer loop and makeup streams.
  • Water treatment front-end design and cost estimating for new hydrogen projects.
  • Existing system troubleshooting and performance improvement.
  • Water treatment training for hydrogen plant workers.
Why Rodi?
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JUMP TO:
Ultrapure Treatment and Purifcation Systems for Electrolyzer Feed
Ultrapure Water from Unconventional Sources
Electrolyzer Loop Polishing
Ultrapure Water Degassing​

ULTRAPURE TREATMENT AND PURIFICATION SYSTEMS (UPW)
​FOR ELECTROLYZER FEED

RODI’s PureBox™ and PureFlex™ high performance water treatment systems can be easily configured to provide ultrapure makeup water for hydrogen electrolyzers.  These systems are available in capacities to serve electrolyzers ranging from 1 MW to as much as 100 MW and larger. RODI’s experience with producing electrolyzer feed water has taught which features of the ultrapure system are most important in hydrogen applications
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ULTRAPURE WATER (UPW) FROM UNCONVENTIONAL SOURCES

The use of solar and wind power for the production of green hydrogen often means that project locations are in some of the more barren and water-stressed parts of the world. Even in well-developed areas, water may be in short supply. RODI’s twenty-seven years of experience in treating challenging feed waters allows us to create ultrapure electrolyzer feed from unconventional sources such as:
  • Seawater
  • Brackish groundwater
  • Sewage effluent
  • Industrial wastewater
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ELECTROLYZER LOOP POLISHING

Supplying ultrapure water as makeup to the electrolyzer is only half of the equation in regard to water purification for hydrogen production by electrolysis. It is also necessary to continuously purify (or polish) the ultrapure water that recirculates within the electrolyzer. 

RODI Systems has pioneered the use of electrodeionization (EDI) for electrolyzer polishing. Use of EDI for polishing eliminates the use of conventional ion exchange polishing systems which require frequent chemical regeneration or resin exchanges. 

RODI’s unique EDI polisher design eliminates the waste reject from the EDI polisher by recycling it back to the inlet of the ultrapure water makeup system. Current EDI polishing systems operate up to 40° C. RODI is working with a major EDI module manufacturer in the development of a module that will operate up to 75° C
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ULTRAPURE WATER DEGASSING

Removal of unwanted gases from the ultrapure water stream at various points in the hydrogen production process can provide valuable benefits. Removal of hydrogen from the EDI loop polisher reject might be necessary from a safety standpoint before the reject is reused as feed water to the ultrapure makeup system. Removal of nitrogen from the makeup and electrolyzer loop streams can reduce the need for expensive cryogenic processing of the finished hydrogen product.

​RODI’s degassing systems utilize state-of-the-art membrane degassing technology to efficiently remove gases while maintaining the purity level of the water being processed.
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Contact Us

(505) 334-5865
RODI Systems Corporation
936 Highway 516, Aztec, NM 87410
info@rodisystems.com
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  • Home
  • Products
    • RODI Products
    • Ceramic Membrane
    • Chemical Feed Systems
    • Controllers & Instruments
    • Custom Controllers
    • Desalination Systems
    • High Purity Systems
    • Silt Density Monitors
    • Wastewater Treatment Systems
    • Water Purification Systems
    • Water Treatment for Hydrogen Production
  • About Us
    • About RODI
    • RODI Projects
    • RODI Customers
    • Industries
    • Technologies
  • Get Support
    • Technical Support
    • How To Buy Standard Products
  • Contact RODI
  • Resources
    • How Does Reverse Osmosis Work?
    • What is Desalination?
  • Blog