RASLine Series Aquaculture UV Systems

Nuvonic RASLine is a UV disinfection line for recirculating aquaculture systems (RAS), with three sub-families: RASLine D PH (1.6-33 kW, 13 models), the NVI (Norwegian Veterinary Institute) approved RASLine PQ IL (5.6-52 kW, 6 models) and RASLine D EO (4.5-6.8 kW, 5 models). All variants have a 316L / 1.4404 stainless steel chamber, a 1-60 °C working fluid temperature range and an automatic electrically driven wiper; a Super Duplex option for sea water applications is offered for D PH and PQ IL. Mikron Proses, the Nuvonic distributor in Turkey, supplies RASLine with application consulting, supply, installation and commissioning.

RASLine is the UV disinfection line that Nuvonic developed specifically for recirculating aquaculture systems. It can be positioned at different points of the fish tank, bio-filtration and recirculation loops. It disinfects the water, eliminates harmful microorganisms, reduces the bio-load and prevents bio-fouling, without chemicals.

Three variants with different validation and efficiency levels

RASLine D PH is the basic variant for general-purpose aquaculture disinfection: 13 models from 1.6 kW to 33 kW. Its integrated UV monitor continuously measures the germicidal output and logs it.

RASLine PQ IL comes with dose equations and sizing that were independently bioassayed and approved by the Norwegian Veterinary Institute (NVI). A calibrated, DVGW compliant dry UV sensor on each lamp gives a real-time dose reading (RED), and flow and UV transmittance (UVT) meter inputs allow the dose to be calculated from the actual process conditions. 6 models from 5.6 kW to 52 kW.

RASLine D EO has a compact single medium pressure lamp design, which gives lower maintenance cost than multi-lamp systems. Stepless lamp power adjustment, driven by the flow and UVT meter inputs, optimises energy use, and RS 485 allows integration into building management systems. 5 models between 4.5 and 6.8 kW.

Choosing a variant

Which variant (basic, NVI approved, or single-lamp) suits your process depends on the facility’s validation requirement, the flow and UVT conditions and the maintenance tolerance. Describe your application and we will select the right model together. For the selection logic, see the UV system selection guide; for maintenance, see UV lamp replacement. The whole range is listed under UV systems and on the Nuvonic brand page.