The Facility of Aquaculture Research of Macroalgae is a research facility by The University of Waikato, focusing on the development of sustainable technologies to enable the production of marine and freshwater macroalgae for biomass applications. The purpose of the initiative is to meet the national targets of New Zealand by diversifying the local aquaculture industry and to develop a blue economy in the region.
The facility needed a solution to ensure state-of-the-art disinfection for the RAS and intake supply for their comprehensive setup. The facility consists of two identical, bespoke algae research systems for both fresh and saltwater use, all housed in locally sourced greenhouses using reverse cycle heat pumps for temperature control. The system required a dual intake water treatment system for saltwater and freshwater, allowing for input of various sources of wastewater to trial treatment and remediation options.
The primary species to be grown in the RAS are the freshwater alga Oedogonium and the seaweed Ulva (sea lettuce), facilitating an infrastructure for the cultivation of seaweed from nursery stages to grow-out, with the goal of delivering a closed life-cycle aquaculture production of seaweed.
“We find the ULTRAAQUA UV’s to be durable and problem free units for our commercial scale systems. One feature that stands out is the thermal cutoff to protect the units against thermal damage if waterflows stops. They also stand up well to saltwater usage in and around the units”
Chris Blake, Advanced Technical Officer at The University of Waikato