[ Product listing ](/en/technologies-1 " Product listing") #### Compact water purification system for PEM electrolyzers in green hydrogen production, processing up to 30 l/hour. Guaranteed purity, space efficiency, and easy maintenance make it ideal for hydrogen electrolyzers producing up to 30Nm³/h. [Contact an expert](https://www.veoliawatertechnologies.com/en/contact) [Overview](#1) [Applications](#2) [Services](#3) [Resources](#4) [Contact](#5) ## Overview While conventionally treated water can be used for various industrial and energy generation processes, in green[ hydrogen production](/en/core-markets/hydrogen-production "Hydrogen production"), the ions, particles and organics present in this water have the potential to adhere to the surface of an electrode, catalyst or membrane in the proton electrolyte membrane (PEM) electrolyzer. This risks reducing process efficiency, causing damage or shortening equipment lifespan. For efficient green hydrogen production, a consistent supply of purified water is essential, and water must undergo an extra stage of treatment. Purenergy 30 is used in the electrolysis stage of green hydrogen production to provide purified water for the proton electrolyte membrane (PEM) electrolyzer process. ### How does Purenergy 30 work? Developed by [Elga Labwater](https://www.elgalabwater.com) — a subsidiary of Veolia Water Technologies — Purenergy 30 is the first water purification system specifically designed for the green hydrogen production industry and represents a step-change in purification standards in this sector. Purenergy uses three key water purification technologies: ### Reverse osmosis Reverse osmosis (RO) is the first stage of the water purification system and uses a semi-permeable membrane to remove ions, particles, organics and larger particles from water. The water is pressurized and forced through the membrane, separating contaminants from the clean water. ### Electrodeionization stack Electrodeionization (EDI) is a water purification process that combines ion exchange and electrodialysis to produce high-purity water. The EDI stack comprises a set of chambers filled with ion-exchange resins separated by ion-exchange membranes. Where the water enters the stack, an electrical field is applied at right angles to the flow, forcing ions to move through the resins and across the membranes. These impure ions are collected into concentrate streams which are then drained. ### Ultraviolet light treatment The final stage of the Purenergy 30 water purification system is ultraviolet (UV) light treatment. UV disinfects the water in a chemical-free way that effectively destroys any remaining bacteria, viruses, or pathogens left in the water after the ions and particles have been removed. UV disinfection is commonly used in various applications and is considered a reliable and environmentally friendly method to purify water as it does not introduce any chemicals into the water or produce harmful disinfection byproducts. [Do you have a question about this technology? Ask an expert.](https://www.veoliawatertechnologies.com/en/contact) ![Lateral view of a Purenergy 30 unit](/sites/g/files/dvc2476/files/styles/media/public/image/2025/01/Purenergy.png.webp?itok=e4V6U6IQ) ## Features and benefits ![](/sites/g/files/dvc2476/files/styles/default/public/image/2023/01/Footprint-picto1.png.webp?itok=QMiP32Xt) **Compact** 550mm wide and 460mm high. Wall mountable, optional docking vessel — saving valuable space. ![](/sites/g/files/dvc2476/files/styles/default/public/image/2023/05/Test-Licence-to-operate%20picto.png.webp?itok=Tm4BB8O0) **Reliable** Extensive experience in mission-critical environments means reliability is tested, proven and unrivaled. ![](/sites/g/files/dvc2476/files/styles/default/public/image/2023/02/Water-picto.png.webp?itok=R9B8i8pr) **Guaranteed water purity** Regular recirculation through the system’s purification technologies ensures the water specification is maintained. ![ENVIRONMENT picto](/sites/g/files/dvc2476/files/styles/default/public/image/2022/04/environment-picto-64.png.webp?itok=5f40rqf3) **Eco-aware** The EDI (electrodeionization) technology minimizes environmental impact. ![](/sites/g/files/dvc2476/files/styles/default/public/image/2023/07/Digital-tools.png.webp?itok=Tu3RoGHO) **Easy to use** A near plug-and-play installation process combined with automated monitoring and alarms enables a simple set-up and operation. ![](/sites/g/files/dvc2476/files/styles/default/public/image/2023/02/Maiintenance-1.png.webp?itok=GdP1r_2J) **Simple maintenance** The expertise gained from a global installed base delivers an easily serviceable unit. ## Applications [ ![Ultrapure banner](/sites/g/files/dvc2476/files/styles/content_push_teaser/public/image/2022/06/ultrapure.jpg.webp?itok=ws_DdGoO) ](/en/applications/ultrapure-water "Ultrapure water") [Ultrapure water](/en/applications/ultrapure-water "Ultrapure water") A full range of water purification technologies [Read more](/en/applications/ultrapure-water "Ultrapure water") ## Services [ ![Woman checking plant's machinery - wearing safety hat and glasses.](/sites/g/files/dvc2476/files/styles/content_push_teaser/public/image/2022/07/Content%20push%20%28298%C2%A0%C3%97%C2%A0229%C2%A0px%29%20%287%29.png.webp?itok=W0KNyVSR) ](/en/aquaservice "Aquaservice™") [Aquaservice™](/en/aquaservice "Aquaservice™") A comprehensive range of service offerings with bundled packages for optimum performance and peace of mind. [LEARN MORE](/en/aquaservice) [ ![Hubgrade make your ressources smarter banner ](/sites/g/files/dvc2476/files/styles/content_push_teaser/public/image/2021/12/210394_VWT_CORPOC_HUBGRADE_web_banner_1542x528.jpg.webp?itok=HkeBYHRm) ](/en/hubgrade-digital-solutions "Hubgrade digital solutions") [Hubgrade digital solutions](/en/hubgrade-digital-solutions "Hubgrade digital solutions") A combination of digital tools and Veolia expertise that make all your water processes smarter, safer and more sustainable. [LEARN MORE](/en/hubgrade-digital-solutions) ## Resources [PDF Purenergy brochure (4.96 MB) ](/sites/g/files/dvc2476/files/document/2025/01/Pure-Energy_BROCHURE.pdf) [PDF Purenergy specifications datasheet (1.07 MB) ](/sites/g/files/dvc2476/files/document/2025/01/Pure-Energy_SPEC-SHEET.pdf) ## Contact We are committed to providing the green hydrogen production industry with the tools it needs to achieve excellence in quality control processes. We are proud to contribute to the advancement of green hydrogen production while maintaining the highest standards of regulatory compliance. Purenergy 30 represents a step change in water purification standards. ![Ahmed Elshorbagy picture](/sites/g/files/dvc2476/files/styles/default/public/image/2024/02/Ahmed-Elshorbagy.jpg.webp?itok=cGEpgTkP) #### Ahmed Elshorbagy Business Development Manager, Veolia Water Technologies Middle East **Contact Ahmed through his** [**LinkedIn account**](https://www.linkedin.com/in/ahmed-elshorbagy-csm-scqf-a7002840/) ## FAQ about Purenergy 30 ### What is green hydrogen? Green hydrogen is hydrogen gas produced by splitting water molecules through electrolysis, using renewable energy sources such as wind, solar, or hydroelectric power. In simple terms, the process is in three parts: - **Renewable energy generation**: Electricity is generated from renewable sources such as solar photovoltaic panels, wind turbines or hydroelectric dams. - **Electrolysis**: The renewable electricity is then used to power an electrolyzer, which splits water molecules (H2O) into hydrogen (H2) and oxygen (O2) through the process of electrolysis. This is typically done in a proton electrolyte membrane (PEM) or an alkaline electrolyzer. - **Hydrogen production**: Hydrogen (H2) is collected as the product of the proton electrolyte membrane (PEM) electrolysis process, while oxygen (O2) is released as a byproduct. Green hydrogen gas can be used in a wide range of sectors such as transportation, industrial production and power generation. It is particularly useful for sectors where direct electrification may be challenging or impractical, such as long-haul transportation, heavy industry and energy storage applications requiring high energy density and long-duration storage capabilities. ### Why is green hydrogen important? **Decarbonization**: Unlike hydrogen produced from fossil fuels, green hydrogen production emits little to no greenhouse gases, making it a crucial tool in efforts to decarbonize various sectors of the economy. It helps reduce overall carbon emissions, mitigating climate change and contributing to net zero emissions. **Energy storage**: Excess electricity generated from renewable sources during times of low demand or high availability can be used to produce green hydrogen. The hydrogen can then be stored and later converted back into electricity providing a reliable and flexible means of balancing energy supply and demand and enhancing grid stability. ## Technologies related to Purenergy 30 [ ![](/sites/g/files/dvc2476/files/styles/vwt_product_content_push/public/image/2025/01/22000363%20SL%20-%20TERION_12500-Vista_Frontal_Izquierda-Operario-alta.jpg.webp?itok=9FN4RQNN) ### Terion® High-purity deionized water for power generation, including boiler feed and turbine injection. Terion® combines high-recovery reverse osmosis and continuous electrodeionization in a single-skid unit. Membrane Filtration - reverse osmosis ](/en/solution/technologies/terion) [ ![](/sites/g/files/dvc2476/files/styles/vwt_product_content_push/public/image/2019/08/MED-push.jpg.webp?itok=gEQX65J9) ### Multiple Effect Distillation (MED) Thermal sea water desalination Evaporation - Distillation - Crystallization ](/en/technologies/multiple-effect-distillation-med) [ ![The Barrel on site in Oman Sur](/sites/g/files/dvc2476/files/styles/vwt_product_content_push/public/image/2022/12/_007_59.8x79.2_SIDEM_Barrel%20overview.JPG.webp?itok=e0jqcYkD) ### Barrel™ A safe, compact and digital RO desalination system. Its plug-and-play approach helps to secure a fast-track schedule while its embedded digital sensors provide remote monitoring. Membrane Filtration (MF/UF/NF) ](/en/solutions/technologies/barrel)