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Water treatment systems

Supplier of ballast water treatment systems and process water treatment systems for aquaculture and maritime use.

HAV Group is a supplier of ballast water treatment systems for ships and other water treatment systems for the aquaculture industry.

The spread of invasive species is recognized as one of the greatest threats to the ecological and the economic wellbeing of the planet. 

Efficient treatment of ballast water prevents the unwanted spread of invasive species. The ballast water treatment system is available for both retrofit and vessel newbuilds. 

Process water treatment for aquaculture production is key to maintain fish health and avoid detrimental effect on local environment. 

HAV Group provides water treatment technologies for both land-based aquaculture and live fish carriers. 

Moreover, HAV Group’s water treatment products are based has a chemical-free system that does not pollute the marine environment. 

In total, HAV Group possesses the competence and tools available to help shipowners design, develop and construct low and zero emission vessels, thereby supporting the global maritime industry in reaching its emission targets.  


Norwegian Greentech (NGT)

HAV Group’s subsidiary Norwegian Greentech develops and manufactures water treatment systems. NGT's BWMS is certified in accordance with IMO and USCG, and is approved for use in all water salinities: fresh, brackish and marine, with no required holding time.

BWTS_Norwegian Greentech

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NGT-BWMS -150 unit - small capacity

A small and efficient Ballast Water Management System

An important part of this system is the ultraviolet chamber, ensuring high performance with the lowest energy consumption when compared to other reputable manufacturers. This is achieved thanks to smart light control based on water transmittance and flow needs.

Additionally, our system has a mechanical wiper to clean all lamps at once, preventing limescale to build up, if maintained properly. This eliminates the need for a (CIP) chemical dosing system, reducing logistic costs and enhancing safety for onboard personnel.