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Fish Farming

Vacuum is used in nearly every step in the process of fish farming. From roe to pre-packaged fillet.

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THE ROLE OF VACUUM IN FISH FARMING

Fish, mostly salmon is accompanied by vacuum during its whole life cycle. The most common use of vacuum in fish farming is vacuum packaging of fresh fish. In addition, vacuum is used for ventilation of breeding tanks, for transporting fish but also to suction out by-products and waste.

Vacuum also plays an important role for further processing of these by-products. They are transformed into fish oil and fish feed, for example. This avoids unneccessary waste and ensures the sustainability of the process.

For all areas of fish hatchery right up to processing and packaging, we offer the right vacuum or overpressure technology.
“Busch has perfectly supported us with upgrading the vacuum supply of our fish farms. “
Dagfinn Vik, Technical Manager at Inka AS

OUR SOLUTIONS FOR FISH FARMING PROCESSES

Experienced Busch specialists work closely together with suppliers to fish farms and fish processing plants. Helping to build complete factories with centralized compressed air and vacuum systems. All over the world.

We advise you designing air, gas and vacuum supply systems that are tailored to meet your specific requirements. This ranges from simple ventilation of breeding tanks to complex supply units for an entire processing plant or recirculating aquaculture systems (RAS).
TYR rotary lobe blowers (overpressure) TYR rotary lobe blowers (vacuum) MINK dry claw compressors MINK dry claw vacuum pumps SAMOS side channel blowers DOLPHIN liquid ring vacuum pumps and compressors R5 oil-lubricated rotary vane vacuum pumps SECO dry-running rotary vane vacuum pumps and compressors
Foam extraction in hatcheries
Sorting of fish eggs
Ventilation of breeding tanks
Cleaning of band and drum filters
Gas input to breeding tanks
Pneumatic transportation of live fish
Air input for cleaning breeding tanks
Pneumatic feed supply
Extraction of slaughter waste (✓) (✓)
Retaining vacuum for filleting
Vacuum for transportation
Pneumatic suction conveying of ice for cooling
Vacuum packaging
MAP packaging
Thermoforming
Carton packaging (✓)
Handling / Palletizing (✓)

VACUUM IN FISH FARMING PROCESSES

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Fish hatchery

  • Foam extraction
  • Sorting of fish eggs

During the first year, the salmon fry is living in cages indoors.

In this time, the fish is closely monitored with cameras. Specialized personnel, often veterinarians, make sure that the fish fry is fed adequately. And that the oxygen level inside the water is maintained at an appropriate level. The supply of additional oxygen to the breeding tanks can, for example, be ensured by rotary lobe blowers of the TYR family.

Moreover, the size of the salmon fry is constantly monitored as it is important that they grow in a comparable way. Otherwise, some fish that dominate in size will get stronger and larger while smaller ones have difficulties to survive. To avoid this imbalance, the fish are sorted in regular intervals. Vacuum allows to gently move the live fish from one tank to another via pneumatic conveying.

Some fish unfortunately do not survive the initial breeding phase in the indoor tanks. It is important to regularly remove this dead fish to prevent diseases and ensure maximum hygiene. Dead fish sink naturally to the bottom of the cages. There, they are picked up with a hoof and placed in a funnel next to the cage. This funnel is opened with a valve and the dead fish are suctioned out of the premises by means of vacuum. This so-called "dead fish removal system" is one of our most popular standard vacuum systems.
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Fish farming / Aquaculture

  • Initial intake of water feed pumps
  • Ventilation of breeding tanks
  • Cleaning of band and drum filters
  • Gas input to breeding tanks
  • Ventilation of breeding tanks
  • Pneumatic transportation of live fish
  • Air input for cleaning of breeding tanks
  • Pneumatic feed supply
When the salmon fry is around one year old and weighs about 100 grams, it is defined as juvenile, or smolt. It is then ready to live in salt water and can thus be released into the sea.

Special feed fleets are often used to blow the salmon feed into the cages in the sea. TYR rotary lobe blowers are perfectly suited for this purpose.
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Fish processing

  • Extraction of slaughter waste
  • Retaining vacuum for filleting
  • Vacuum for transportation
  • Pneumatic suction conveying of ice for cooling

In fish processing, vacuum commonly plays a role to suction out intestines. These so-called by-products are reused, for example, to produce fish oil and fish food. The remaining waste is then transported out of the facilities by means of pneumatic conveying.

Once all waste and by-products are removed, it is time for filleting. In this process step, vacuum is often used to suction the fish to the filleting table. After this, the filleted fish is transported to the vacuum packaging department.
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Packaging

  • Vacuum packaging
  • MAP packaging
  • Thermoforming
  • Carton packaging
  • Handling / palletizing

Vacuum has also become indespensable in most modern warehouses where it is used for lifting and palletizing.

FISH FARMING APPLICATIONS IN DETAIL

Extraction of fish tanks

  • Foam extraction in hatcheries
  • Extraction of slaughter waste

Aeration of fish tanks

  • Ventilation of breeding tanks
  • Gas input to breeding tanks
  • Air input for cleaning breeding tanks

Pneumatic transportation

  • Pneumatic transportation of live fish
  • Pneumatic feed supply
  • Vacuum for transportation
  • Pneumatic suction conveying of ice for cooling

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Handling and lifting

  • Sorting of fish eggs
  • Retaining vacuum for filleting
  • Handling / palletizing

Packaging

  • Vacuum packaging
  • MAP packaging
  • Thermoforming
  • Carton packaging

CASE STUDIES

  • Manufacturing Salmon Products Using State-Of-The-Art Vacuum Technology

    Manufacturing Salmon Products Using State-Of-The-Art Vacuum Technology

    Nordlaks Produkter AS

    Learn more
  • Hygienic removal of dead fish in RAS

    Hygienic removal of dead fish in RAS

    Osland Settefisk SA

    Learn more
  • Reliable oxygen supply for fish farm biofilters

    Reliable oxygen supply for fish farm biofilters

    Osland Havbruk AS

    Learn more