Water Treatment Success: Ålands Vatten
Ålands Water has taken a major step toward sustainable and efficient water treatment by upgrading its drinking water system with a reliable ozone solution from Primozone. The new installation ensures clean, safe, and great-tasting water for the entire island of Åland serving both residents and the large seasonal population during summer.
Located in the Baltic Sea, the Åland archipelago depends on high-quality water production to meet demand. The plant supplies 475 m³/h of drinking water to the population of Mariehamn and surrounding areas. To ensure stability and quality, Ålands Water replaced its old air-fed ozone generators with the Primozone GM18 system, known for its high ozone concentration, modular design, and energy efficiency.
The new system provides a continuous supply of high-quality water while removing algae, bacteria, and humus — substances that can affect both taste and safety. Part of the ozone from two Primozone GM18 units supports the flocculation process, significantly reducing the amount of chemicals needed in the filtration step. The rest of the ozone is used to create a strong barrier against viruses, algae, and parasites, ensuring superior water hygiene
Objective
The objective was to replace outdated air-fed ozone generators with a reliable, energy-efficient system that improves drinking water quality while reducing chemical use and operational costs.
Primozone solution
2 x GM18 ozone generators
Oxygen generator
Compressor
Venturi mixing system
Ålands Vatten ab
Ålands Vatten AB is the main water supplier on the Åland Islands, providing high-quality drinking water to residents and businesses while promoting sustainable water management across the archipelago.
Thanks to Primozone’s technology, energy consumption has been substantially reduced, and the system automatically adjusts ozone and oxygen production to match water flow fluctuations. This ensures stable performance and long-term operational reliability, even during peak demand periods.
The collaboration between Ålands Water and Primozone highlights how advanced ozone systems can enhance water quality while supporting sustainability goals.
Results
Continuous production of high-quality drinking water for the entire island
Decreased chemical usage in the flocculation process
Improved sustainability and operational efficiency for ålands water
Ålands vatten ab
“The Primozone ozone generator system is very reliable and has worked very well since installation. Energy consumption has decreased substantially”
—Christian Nordas