Oxygen enrichment systems

Oxygen Enrichment Systems

Healthy Ponds Need Oxygen

Oxygen enrichment solutions to help you achieve a healthy fish farm for your pond. With increasing demands of fish quality and the use of high quality, expensive feed, it is important to use more effective oxygen transfer methods than surface aerators alone. This is because with surface aeration, it is only possible to achieve a maximum of 100% saturation. Oxygen enrichment can lead to higher weight gains and more efficient use of expensive feed.

PRODUCT RANGE

Oxygen enrichment systems

Loxy

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 oxygen enrichment for lakes and ponds

Oxyplus

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.

Spec | PDF

Oxyplus Gravity

Oxyplus Gravity

Our Oxyplus oxygen transfer system works with very low pressure difference. This makes the use of this system pos sible, without a separate pump, where specific requirements are fulfilled.

Spec | PDF

Oxyjet

Oxyjet

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.

Spec | PDF

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  • LOXY®

    LoxyThis new enrichment system contains a novel rotary mixing mechanism within the plastic body. This is driven by an electric motor located above the water surface. This mixer propels the water outwards in the contained system, due to its rotation. The resulting fast-flowing water generates a vacuum, and pure oxygen is drawn in and entrained through a tube in the mixer, and is distributed in very fine bubbles within the water.

    With the help of this new invention, LOXY® achieves a very good level of oxygen enrichment with low energy consumption. Previous systems worked with ‘bottlenecks’ (for example, the venturi nozzle – disadvantage: a relatively high water pressure is required) or with wheels or brush wheels (disadvantage: a lot of energy is required to move the water) Compared to these systems, LOXY® has the advantage that, due to the rotary mixer, only a very small portion of the water needs to be accelerated; no water pressure is required.

    A fluidised bed that lowers energy consumption and leads to excellent oxygen enrichment is created on the surface of the novel rotary mixer. The main plastic body of LOXY® is shaped such that water is sucked up from below and exits through an opening on the side. Therefore, short-circuiting cannot occur. The main body is enclosed by two floats. All of the plastic parts are made of polyethylene and are extremely robust.

    This elegantly simple LINN development does away with submersible motors, belt drives and external bearing blocks. LOXY® uses a durable, energy-saving electric motor (according to the latest IE3 standard) with a stainless steel shaft on which the rotary mixer is directly mounted. The drive is thus completely maintenance-free! The electric motor is located in a protective housing on the body base and can be removed easily and quickly. LOXY® does not need any screens to protect the fish or exclude leaves, so clogging within the system is impossible!

    LOXY® is supplied assembled, ready for use and with a 20 m cable and a motor protection plug.

    Technical Specifications

    Loxy specification

    Advantages

    • Low energy consumption – very efficient
    • Pioneering technology
    • Safe operation
    • Maintenance-free
    • Lightweight and compact
    • Clog-free
    • Great value for the money

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  • Oxyplus®

    OxyplusOxyplus 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.

    Water supported by Oxyplus can be enriched by 4-10 mg/ltr. LINN enrichment systems makes it possible to introduce oxygen to water with a high level of efficiency.

    Oxyplus floats (except for the 0.10 kW model), is lightweight, handy and simple to install in the water. It has a directable current. The inlet and outlet are
    positioned on opposite sides – so avoiding short-circuiting.

    Oxyplus is supplied completely self-contained and ready for use. You simply have to fit the loose floats (included) and the apparatus can then be positioned in the water. An flowmeter is mounted onto the oxygen supply, which is attached to the apparatus. After having connected the apparatus to your power supply, you can begin. Linn’s tried and tested Pipe Pumps take care of water supply with the Oxyplus system.

    The submersible motor’s housing is made entirely of stainless steel, the seal is produced with a high quality sliding sealer ring. Mountings and screws are, of course, also made from quality stainless steel. The basic housing and the floats are constructed from synthetic materials and are robust, easy-care items which contribute to the low weight of the apparatus. Practical carrying handles are moulded directly onto the floats. The inlet requires a screen which excludes fish and other floating debris.

    Internal blockages in the system cannot occur. The inlet screen can be supplied in several mesh sizes. Standard equipment is a stainless steel screen with 9.5 mm bar spacing – for a fry pool, the stainless steel screen has a bar spacing of 5.5 mm and for hatcheries a stainless steel screen with bar spacing of 2-3 mm is supplied. All Oxyplus apparatus are designed for use directly in the pool. Please take into consideration that the volume of water flow through the pool must suit the capacity of the machine in order to achieve optimum results. Speak to us, we will be happy to advise you.

    Oxyplus does not spray water out of the apparatus and runs almost silently. In the summer months, the water is only slightly warmed by the apparatus, in winter only slightly cooled. This is particularly important for winter feeding in watercourses fed by spring water!

    Technical Specifications

    Oxyplus specification

    Advantages

    • highly efficient
    • almost silent
    • lightweight and compact
    • pump grill not susceptible to blockage
    • tested and reliable

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  • Oxyplus® gravity

    Oxyplus GravityOur Oxyplus oxygen transfer system works with very low pressure difference. This makes the use of this system possible, without a separate pump, where specific requirements are fulfilled.
    Oxyplus can then be used without power supply, only a supply of oxygen. To use the system without a motor, you will need an existing gradient/hydraulic head, which, depending on the Oxyplus model, must be between 50 – 100 cm.

    The pressure of this fall is sufficient to direct the water into the system’s mixing device. Here the enrichment of the water with oxygen by special mixing equipment will be carried out – as in the motorised systems, and the action and efficiency is the same – but without the energy costs!

    It is very important for operations without a motor where no electric current is used, that the necessary fall of water is achieved and that the volume of water flow is appropriate for the apparatus used. Differing volumes of water flow and pressure ratio alter the amount of oxygen taken up and so alter the efficiency of the system. Oxyplus gravity can be supplied in several
    models:

    Type 1 – 3/floating models

    For this model we use the basic float of the Oxyplus apparatus with motor. Type 1 is, therefore, the same size and construction as the 0.25 kW model, Types 2 and 3 are the same as the 0.55/0.75 kW models. The floating models are quick and easy to install and do not need an inlet screen or motor. The water is directed into the apparatus by a self-contained synthetic spiral hose, supplied.

    Type 4 – 6/stationary models

    These models have a separate polyethylene housing which contains our own specially developed mixing device. The water with the required fall is directed into this container and enriched.

    This is a fixed container and may also be built into a fall pipe. It is essential that the container is stabilised and firmly secured. The height of the container can be varied by us (max. 100 cm), according to customer’s requirements. In addition, it is possible to order different inlets and outlets.

    Technical Specifications

    Oxyplus Gravity specification

    Advantages

    • highly efficient
    • almost silent
    • lightweight and compact
    • pump grill not susceptible to blockage
    • tested and reliable

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  • Oxyjet

    OxyjetOxyjet is an open oxygen input system which is put directly into the pond or channel. The system is ideal for use in recirculation complexes where the water must be circulated anyway. Then Oxyjet circulates the water and enriches it with oxygen at the same time. Oxyjet can be used wherever there is a hydraulic pressure head of at least 60cm. The outstanding performance of Oxyjet is due to patented special jets. Compared to conventional jets, a very high gas transfer is achieved. The jets result in a very high bubble detention time in the mixing chamber, and therefore a very high effectiveness and efficiency.

    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. If the water flow increases temporarily, there is an overflow, that by – passes the jet system. Oxyjet offers effective oxygen enrichment without energy or maintenance costs.

    Technical Specifications

    Oxyjet specification

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