Increasing demands of fish quality, higher stocking densities, declining water supply and the use of high quality, expensive feed necessitate more effective oxygen transfer methods than surface aerators alone. With surface aeration, it is only possible to achieve a maximum of 100% saturation, and then with the expense of high energy costs. This is because oxygen is only present in air at a low concentration (about 20%).
LINN Germany has been manufacturing oxygen enrichment systems for 20 years. The design brief for the latest development was to produce a robust and reliable system with a high oxygen transfer efficiency. In addition, the new floating device was to be as light, convenient, easily serviced and quickly-deployable as possible. The development trials were a success, and LOXY® was born – the latest state-of-the-art oxygen enrichment system from LINN!
Oxyplus works with a comparatively low pressure difference (max. 0.1 bar). Oxygen poor water is drawn in and mixed intensively with the pure oxygen which has been introduced. An increase in the surface area of the medium is obtained by mixing and oxygen is taken up. By this means, other gases (e. g. Nitrogen) will also be driven out. These gases escape through the ventilation pipe of the apparatus with a minimal amount of oxygen.
According to the flow to be enriched with oxygen, Oxyjet is fitted with a suitable number of jets. Furthermore, Oxyjet is flexible for times of low flow – plugs are supplied to block jets to reduce the flow capacity.