Water treatment for green hydrogen
Global production of green hydrogen is growing rapidly
Green hydrogen is essential for realizing the objectives outlined in the Paris Climate Agreement. It is produced via water electrolysis where the necessary energy is sourced exclusively from renewable energy sources.
The electrolysis capacity in Germany is estimated to increase from 30 MW in 2023 to over 200 GW by 2050. Green Hydrogen is increasingly used as an alternative fuel for shipping and as a raw material in the industry.
Energy surpluses created, for example by wind turbines during storms which overload the grid, could be converted into hydrogen, and stored in the cavern storage facilities, among other places in the long term. (Source: Fraunhofer IAO – BLOG)“.
We develop high quality modular water treatment plants
Ultrapure water is the key raw material for the production of green hydrogen. We develop modular, scalable water treatment plants to produce high-purity water for damage-free electrolysis.
We produce compact water treatment plants for pilot projects, large-scale plants with sophisticated process technology and containerised plants for rapid installation and commissioning on site in Germany.
We are EMAS-certified and offer sustainable, because long-lasting water treatment plants, up to 100 m³/h. We will be happy to advise you on the selection of the optimal plant components.
High purity water extends the life of the electrolyser
"Foreign ions in the water such as iron reduce the cathode activity and thus reduce the performance of the electrolyser. At the same time, copper can increase membrane resistance."
Tugay Cerit, Product Manager
Technology:
Our technology for the production of ultrapure water
1. Pre-treatment
2. Reverse osmosis
Reverse osmosis (RO)
Membrane degaser (MEG)
Electrodeionization (EDI)
3. Storage and distribution
Pure water tank
Booster system
Mixed bed demineraliser
4. Process water circuit
UV unit
Mixed bed demineraliser
References:
High confidence in our efficient and reliable water treatment plants
Containerized water treatment system
customised special plant, electrolyser manufacturer, germany
more information
Reverse Osmosis System UO-D 900 FU CD / H2
customised special plant, electrolyser manufacturer, germany
more information
Reverse Osmosis Plant UO-D 100 CD SO
Compact Special Plant, electrolyser manufacturer, germany (Windpark in Sweden)
more information
Ultrapure Water Plant UP-S7 1500 FU/PP/SO
Water treatment system, Austria (Production of hydrogen as fuel for vehicles)
Ultrapure Water Plant UP-S7 1500 FU
Production of CO2-neutral fuel from hydrogen, Chile (German Automotive Manufacturer)
Reference project for a 20 MW AEL electrolyser:
Large water treatment system for use in containers
We have developed this high-quality plant for a pioneering 2 GW project for the production of ultrapure water, the most important raw material for the production of green hydrogen.
Plant engineering:
-
2 x 40' high-cube containers incl. fixtures, C5 painted, C4 painted for stainless steel components, air conditioning
- 5.8 m³ polypropylene storage tank
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2 x 100 % booster system with frequency converter
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Sand filter, activated carbon filter
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Dosing stations
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4500 l/h diluate, by CEDI, permeate-staged reverse osmosis, 2x100% high-pressure pump with frequency converter, low-pressure side made of polypropylene
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35 m³ DEMIN water storage tank (nitrogen-loaded)
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Polisher through UV system for TOC reduction
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Energy saving thanks to FU pump
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HR membranes
Application
For the production of green hydrogen
Customer
Electrolyser manufacturer Germany
Reference project:
Medium-sized water treatment plant for 2.9 MW PEM electrolyser
- Double softener
- Reverse osmosis system, 900 l/h permeate, high-pressure pump with frequency converter, high-rejection membrane, permeate recirculation
- 400 l buffer tank made of polypropylene
- Pressure booster system with frequency converter
- Fine filter 0.5 µm as resin trap
- Low-pressure polypropylene piping
- Included: Mixed bed demineraliser with UP resin as polisher, UV system for TOC reduction, fine filter with V4A housing
Reference project::
Small water treatment plant for PEM electrolyser with 225 KW capacity
- Entire unit on one frame (900 x 1000 x 1910 mm)
- Low pressure side made of polypropylene
- Double softening plant
- Reverse osmosis system, 100 l/h, high-rejection membrane, permeate recirculation
- 60 l buffer tank made of polypropylene
- Pressure boosting system
- Mixed bed desalination system (optionally with UP resin) as polisher
- Fine filter 0.5 µm as resin trap
Products
Semi-standardised and individual water treatment plants from 1 - 100 MW
For water treatment for the production of green hydrogen, we are developing more and more standards based on our experience from countless pilot projects:
We combine standard components that we stock or produce onsite in Freiburg am Neckar, enabling immediate availability of small systems up to approximately 30 m³/h, with systems up to 100 m³/h also on hand.
Our H₂ series covers the power classes from 1 to 100 MW.
Waterguide
The TOC content provides information about the water quality
TOC stands for Total Organic Carbon and indicates how much organic carbon is contained in a sample, thus allowing conclusions to be drawn about the water quality.
Waterguide
Reverse osmosis is the central principle in water treatment.
Reverse osmosis reverses the natural process whereby water is separated from and diffuses through a solution by a semi-permeable membrane.
Product overview
Download
You will find our water treatment systems, including those for the production of ultrapure water, from page 40 onwards in our general product catalogue.
File format:
PDF / 4,9 MB
Energy efficiency
Download
Our water treatment plants for breweries are also highly efficient thanks to our VSD pumps. Find out more in our brochure.
File format:
PDF / 160 KB
Webinar:
Ultrapure water for electrolysers
In this free 45-minute recording of our webinar on green hydrogen, product manager Birgit Fabritius presents the water treatment of feedwater for electrolysers and polishing for the PEM process water circuit. (The Webinar is in german.)
Made in Germany
We produce in Germany
We have many years of experience in plant construction, even for complex projects. Quality "Made in Germany", engineering spirit and adherence to delivery dates are our top priorities. Our employees test our high-quality machines and systems in our own test field to ensure Perfect functioning with factory acceptance and training on request.
Environmental management system
First EMAS-certified plant manufacturer in the water treatment sector
Herco Wassertechnik GmbH applies an environmental management system in accordance with Regulation (EC) No. 1221/2009 and EN ISO 14001:2015 (sections 4 to 10) for the continuous improvement of its environmental performance, regularly publishes an environmental statement, has the environmental management system and the environmental statement verified by an accredited, independent environmental verifier and is registered in the EMAS register (emas-register.de).
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Please feel free to contact me directly
Marcel Rückert
Business Development Manager Hydrogen
marcel.rueckert@hercowater.com
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+49 (0) 7141 7095 134
Mon-Fri 9:00 - 17:00