SEABED REMEDIATION
Innovation, sustainability and circular economy
The global aquaculture industry is expected to grow considerably, being a critical and key factor to feed an increasing population. There is demand for innovative technology supporting sustainable seafood production, and we believe that this should be combined with promoting a circular economy. At Imo Mare, we see value in seabed remediation and organic resources from aquaculture production resting at the bottom of the sea, waiting to be collected.
Pioneering
technology
Our innovative patented high-capacity suction system accurately collects organic resources from the seabed underneath marine fish farms, a process which has positive environmental impact. The operation causes minimum disturbance to the seabed and is particularly designed to prevent pollution of the water column.
The organic mixture is lifted to the surface vessel by a subsea pump and processed onboard the vessel before transportation to an approved facility for downstream recycling. The processing system is based on application engineering and proven technology.
Heavy metal content of organic mixtures and sediments is a challenge in several industries. Hence, Imo Mare has a utility patent for a new heavy metal extraction and recovery process based on a combination of emerging biotechnology and electrolytic processes.
Additionally, Imo Mare offers services for preventive and corrective seabed remediation through a strategic cooperation with Kran SpA, who specialize in nanobubble oxygenation in the aquaculture industry and beyond.
Together with Kran SpA we are also introducing nanobubbles into flake ice production, which improves the ice quality and fish preservation time
The suction & processing system explained
The suction system is interfaced with an ROV that is lowered from a vessel next to the fish farm and crawls underneath the fish pens cleaning the seabed. The system has several options to redirect flow to allow for optimal recovery of the organic mixture under the fish farm. All features can be controlled from the surface vessel during operation.
The suction system allows for accurate height adjustments through a flexible component and is able to follow the contours of the seabed terrain. A grillage that is integrated in front of the system will break-up the sediment and prevent larger objects from entering into the suction chamber. The system is driven by a pump and has unique functions to redirect flow as to ensure optimal recovery of the organic matter.
The organic mixture is pumped to the surface where it is stabilised and stored intermittently. The stabilisation process involves the removal of odour, solid particles, sand and water, which are returned to sea after processing. The processing system is being covered by a utility patent.
The solution is suitable for use at fallowed fish farm locations without interfering with mooring lines or the pens as well as for fish farms being decommissioned.
Nanobubbles for Seabed Remediation
Imo Mare AS, in cooperation with our strategic partner Kran SpA, are introducing Chilean nanobubble technology for corrective and preventive seabed remediation in the Norwegian aquaculture industry. These solutions are proven 100% green and ensures no water column resuspension as there is no seabed intervention.
Contact us for more details about the numerous projects undertaken by our strategic partner Kran SpA in Chile.
Nanobubbles in Flake Ice Production
Imo Mare AS, in cooperation with our strategic partner Kran SpA, are introducing use of nanobubbles in flake ice production lines to improve ice quality and fish preservation time. The use of nanobubbles gives better ice crystal composition. The cold transport chain is improved, and the fish quality is preserved for a longer period of time.
Contact us for more details from the Chilean proof-of-concept project undertaken by our strategic partner Kran SpA.
Test of Flake Ice without Nanobubbles
Test of Flake Ice with Nanobubbles
Circular solutions
Our high capacity solution for collecting and stabilizing marine organic resources will feed existing and emerging circular value chains related to aquaculture and beyond.
Biogas extraction is a prime example, as is the production of organic fertilizers. Recycling of heavy metals, nutrients and minerals will be key elements to circularity and growth.