ScanAqua´s engineering and development department can offer a complete solution for oxygenation. This involves complete and tailor made systems for oxygenation by use of Moleaer nanobubble technology customized for the aquaculture industry. Nanobubble technology is considered one of the main steps in the ongoing fish farming industry evolution. The benefits of the nanobubble technology is significant, both for the growth and welfare of the fish, as well as for the cost/profit side of the fish farming operation.
There are many methods of dissolving oxygyen into solution. Bubble injection is one of them. Normally bubbles elevates to the surface, and bursts, with gas disappearing into the atmosphere. Nanobubbles is something very different, due to their nanoscopic size, and physical and chemical properties. One very important feature is their neutral buoyancy, preventing them from elevating to the surface and disappear into the atmosphere.
When nanobubbles eventually collapse, they generate hydroxyl radicals. In RAS-facilities it can be used for enhancing the existing oxidation processes like ozone or UV.
Nanobubbles can not be detected by the human eye, you need a laser which reflects off the surface of the nanobubble. Due to their negatively charged surface, they don’t coalesce . This feature enables nanobubbles to attract polluting particles from the water and bind them together, allowing the biofilters to filtrate also these pollutions from the water.
Nanobubbles have a hard surface that scour scale and biofilm. Once the organics have been removed, nanobubbles provide a protective layer on the remaining hydrophobic surfaces to prevent further biofouling. The combination of these properties enable nanobubbles to be used as a sanitary tool, consequently increasing bio security.
Oxygenation of water using our nanobubble technology is significantly more efficient than any other solution presently in the market. Standard generators typically dissolves 17 %–30 %, while Moleaers patented technology dissolves more than 85 %. This reduces the consumption of oxygen significantly (up to 60 %) and is very cost and energy effective.
Moleaer nanobubble technology is user friendly and very reliable – there are no moving parts in the nanobubble generator. It is space saving and easy to install. Nanobubbles are added by leading part of the intake water flow through our nanobubble generator and then redirect the oxygenated water into the fish pen or -tank. The technology is easy to customize to comply with the users wishes.
Source: Prof. Michael Stenstrom, UCLA 2017
