Ultrapure water for a 1 MW electrolysis system

A custom-built ultra-pure water system for a 1 MW electrolysis system, offering high water quality, high operational reliability and an efficient design.

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Project requirements

A leading engineering firm developed its own stack system for producing green hydrogen and required a reliable supply of ultrapure water as a key component of the process. The company needed a solution that could be easily integrated into the overall system, ensure consistently high water quality, and be compact, efficient and easy to maintain.

Project profile

Year: 2024

Country: Germany

Client: ST Engineering Applied Solutions GmbH

Industry: Green Hydrogen

Target: Water quality for electrolysis

System: Ultrapure water system

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Herco solution

A customised pure water solution was developed for the project, combining the highest water quality with efficient use of resources. Through solution-oriented engineering, a compact and reliable system was created that can be easily integrated into the electrolysis system and is designed for stable, low-maintenance continuous operation.

Plant engineering

The system combines several coordinated treatment stages to ensure a consistently high water quality for the safe operation of the electrolysis system.

System separator in accordance with DIN 1988-100 and fine filter with automatic backflushing
Water softener
Water hardness monitoring with Limitron
Reverse osmosis
Membrane degassing
Electrodeionisation (EDI)
PP ultrapure water tank
System capacity 250 l/h