Oxygenation in fish farming
In fish farming, the quality of the water and the environment of the fish are determining factors. Controlling the dissolved oxygen content in the water is essential in aquaculture or during the transport of live fish.
To improve the profitability of your farm, Air Liquide recommends injecting pure oxygen into the water, a more effective alternative to traditional air tank aeration technologies. This application allowed you to create better breeding conditions:
- Increase pool load
- Optimise the food conversion index
- Minimise mortality
From hatchery to fish processing, controlling dissolved oxygen and improving performance
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Increase your production capacitiesThe dissolved oxygen content in water varies with temperature. The natural supply therefore does not always satisfy the needs of fish for their metabolism. Enrichment with pure oxygen acts directly on the quality of the water by ensuring perfect regularity of the oxygen level and maintaining it at an optimal level throughout the year. |
Air Liquide's fish farming oxygenation solution
Oxygen supply
A wide choice of safe supply methods adapted to the level of your consumption.
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For moderate consumption: deliveries of liquid oxygen stored in mobile tanks or in bundles of compressed oxygen cylinders.
- For small volumes, you can buy your bottle from a distributor
- For the oxygenation of fish farming ponds: delivery of liquid oxygen by tank truck in a large tank made available by Air Liquide and managed automatically.
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For very high and regular nominal flow rates: dedicated oxygen production units, on customer site, can be proposed after in-depth study.
Security of supply
Free yourself from the constraints of managing your supplies thanks to telemetry.
- Gas level monitoring in the tank automatically triggers the oxygen supply
- Real-time consultation of parameters relating to the installation (gas flow rates, pressure in the networks, etc.)
- Consultation of technical notices and safety data sheets
Oxygen for the transport of live fish
A pressurised gas cylinder or a liquid source can be used to be installed on the vehicle. It will diffuse oxygen at the right concentration in the bottom of the tanks and transport crates containing the fish.
Advantages
- Allows long distance transport (possibility of export)
- Increase in the fish load in the tanks, reduction in the cost of transport per kg of fish.
- Freshness is maintained and losses avoided during the journey.
Implementation equipment
Regulators, control units, hoses… To work in complete safety, find all of our oxygen-compatible equipment in our catalogue.
Service
Our specialists provide you with rapid and personalized responses to your logistics and process needs. They give you the benefit of more than 50 years of experience in project management on complete systems:
- Evaluation of oxygen consumption used
- Configuration of your installation: sizing of the tank, the vaporizer, design of the distribution network, connections, etc.
- Advice on oxygenation equipment and regulation of the oxygen injected into the pools.
Saturation concentration of dissolved O₂ in mg/l depending on the origin of the water
The oxygen concentration varies according to different parameters: the source of the water, the temperature, the presence of organisms and the density of fish.
| Water temperature | Pure water | Sea water with 35 G/L of salt |
|---|---|---|
| 0°C | 14.5 | 11.2 |
| 5°C | 12.8 | 10.1 |
| 10°C | 11.3 | 9 |
| 15°C | 10 | 8.1 |
| 20°C | 9 | 6.75 |
| 25°C | 8.25 | 6.75 |
| 30°C | 7.5 | 6.2 |
