Green hydrogen

Various methods exist for producing hydrogen, including hydrocarbon or biomass production. However, the most environmentally-friendly method is electrolysis, which separates water into hydrogen and oxygen using clean energy. To do this, the water, which is essential for producing green hydrogen, must be ultrapure. Water quality, influenced by regional variations and the concentration of minerals in groundwater or surface water, is crucial. Prior to electrolysis, minerals must be removed in demineralisation facilities to prevent salt deposits on electrolyser membranes and electrodes.

To achieve this, a complete treatment plant is required, consisting of several pieces of equipment adapted in series for this purpose. These are selected and combined according to the process chosen and the quantitative requirements of the users. In this way, it is possible to achieve better performance more quickly, thanks to tried-and-tested solutions.

The chain system recommended by BWT for water treatment in hydrogen production:

• BWT softening system
• BWT reverse osmosis unit
• BWT electrodeionization unit
• BWT loop system / Closed circuit treatment with integrated ion exchanger
• BWT control system

Standard performance:

• Production of quality water with a conductivity of < 5 µS/cm to 0.1 µS/cm
• Standard flow rates from 200 to 10,000 l/h

In principle, hydrogen could replace fossil fuels in the future. Major car manufacturers have discovered the potential of fuel cell technology. Many hydrogen-powered trucks, cars and buses are now on the road. Fuel cells, an innovative technology, are going beyond automotive use to supply homes with electricity and heat. Green hydrogen is still essential for reducing CO2 emissions in the long term. Green hydrogen is the only viable option if we want to reduce our CO2 emissions in the long term.