Sustainable water treatment

Sustainable smart water solutions

Guldager A/S are specialists in water treatment. We use decades of experience and the very latest knowledge and technology. Every day, we provide clean and efficient process water for HORECA, industry and offshore.

Guldager offers all kinds of corrosion protection and water treatment for service water, process water in industry and offshore. Guldager also has a well-developed service network in Denmark.

Corrosion protection

  • Boilers and pipes

  • Steam boilers

  • District heating

  • Glycol

  • Cooling systems

Water treatment

  • Desalination

  • Antifouling

  • Bacteria control

  • Softening

  • Filtering

  • Drinking water filter

  • Chemicals


  • Boiler cleaning

  • Container disinfection

  • Dry and serviceable basements

  • Risk assessment

  • Pipe system flushing

  • Acid cleaning

  • Water analysis

Read about us in our profile brochure

Guldager is part of the UN Global Compact

Guldager is part of the UN Global Compact, which means that our actions are governed by their principles related to human rights, labour principles, the environment and the prevention of corruption.


State-of-the-art installation ensures clear dishes

No chef wants to see his tunnel dishwasher break down in the middle of an important conference.

At a major hotel in Copenhagen, Guldager has therefore installed a "UniRO 400" membrane filtration system. Before the plant, the lime is removed from the water with a "UniSoft®" softening installation.

With the two systems in series, Guldager ensures that lime-free and ultra-pure water is always available for the hotel's kitchen and various dishwashers.

Filter solutions

Latest news

Do you have any questions? We're ready with advice and guidance

Use our chat function on this page or contact us on +45 48 13 44 00 if you have any questions or would like a visit from our consultants.

Our service centre is also in contact with our service vans if you need service for your installation or emergency assistance.

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