Veolia Water Technologies UK supports green hydrogen production

Veolia Water Technologies UK  is supplying water treatment systems to a global water electrolyzer manufacturer as part of the water treatment specialist’s movement into the Hydrogen production market. The systems can be fed with reservoir, river, borehole or saline feed water to produce water suitable for feeding PEM electrolyzers.


Water electrolysis has a key role to play in the production of hydrogen. To ensure efficient water electrolysis, only high purity deionized feed water must be used to prevent impurities from concentrating inside the electrolyzer, which can adversely affect the performance of the electrode and diaphragm surfaces. Failure to meet deionized water requirements not only leads to faster system deterioration, but also a reduction in system performance.

The client's needs

The global water electrolyzer manufacturer in question, wanted to expand its offer and provide water purification systems to customers as part of an overall package. The manufacturer approached Veolia to supply a water purification solution, due to our experience with similar companies and knowledge of the water requirements for efficient hydrogen production.

The solution

A modular system that can effectively treat feed water to the required quality to feed PEM electrolyzers. It has been specifically designed to manage inlet water with high hardness and salinity, as well as ensure a variable flow rate to suit any requirement. The plant also includes softening and reverse osmosis systems to meet the electrolysers required conductivity of < 3 μS/cm.

This initial solution was developed for the manufacturer’s European-based customers. However, the partnership now also includes the supply of water deionization plants to the manufacturer’s customers operating in the USA. Veolia’s global presence, service support capability and structure was a key benefit. The organization’s local delivery business units will adapt the UK’s systems in order to meet all USA standards (ASME, UL).

This is just one example of the standardized and exportable solutions Veolia  can provide to meet the needs of  electrolyzer manufacturers and support renewable hydrogen production around the world.

We are delighted to support green hydrogen production, a source of energy that will undoubtedly play a key role in reducing greenhouse gas emissions. By working with us, hydrogen producers can benefit from our extensive series of treatment technologies, as well as our deep understanding of the treatment requirements for various feed water sources, to ensure the treated water is suitable for use in electrolyzers. Our global service presence also ensures we can support water treatment systems for electrolyzers wherever they are installed.

Derek McIntyre,
Business Development Director at Veolia Water Technologies UK.