Oxygen Generator For Codfish Aquaculture

The Importance of Oxygen in Codfish Aquaculture

 

Codfish, like other aquatic organisms, rely on dissolved oxygen in water for respiration. Adequate oxygen levels are essential for their normal physiological functions, including growth, digestion, and immune system maintenance. In a closed - or semi - closed aquaculture environment, the natural oxygen supply from air - water interface diffusion and photosynthesis of aquatic plants may not be sufficient, especially when the stocking density is high. Insufficient oxygen can lead to a series of problems such as reduced feed intake, slow growth, increased susceptibility to diseases, and even mass mortality of codfish. Therefore, maintaining proper dissolved oxygen levels is the cornerstone of a healthy and productive codfish aquaculture system.

 

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Advantages of Oxygen Generator for Codfish Aquaculture

 

Efficient oxygen supply and energy saving:
Bubbleless aeration technology is used to improve oxygen utilization and reduce energy consumption, saving more than 30% energy compared to traditional aeration.

Water quality optimization:
By increasing the dissolved oxygen level, it promotes cod metabolism and growth, while reducing the accumulation of harmful substances such as ammonia nitrogen and sulfide, and improving the breeding environment;

Intelligent control:

Integrated dissolved oxygen sensor, real-time monitoring and automatic adjustment of oxygen output, ensuring that the water DO is always in the optimal growth range of 5-7 mg/L for cod;

Environmental protection and safety:
Avoid chemical oxygenator residues, meet green aquaculture standards, and are especially suitable for closed circulating water systems (RAS).

FAQ:
 

1. How to calculate the oxygen generator capacity required for cod farming?
Cod is a high oxygen consumption cold water fish, and the breeding density and water temperature fluctuations directly affect the oxygen demand.
Key parameters:
Fish density (kg/m³)
Water temperature (low temperature requires an additional 5-10% oxygen supply)
Water circulation efficiency
Calculation formula:
Oxygen demand (kg O₂/h) = Fish weight (kg) × Oxygen consumption rate (cod is about 0.2-0.3kg O₂/ton fish/hour) × Safety factor (1.5-2)
 

2. Will the dissolution efficiency of the oxygen generator decrease in a low temperature (<5℃) environment?
Solution:
Using nano bubble technology (bubble diameter <30nm), the dissolution rate at low temperature is increased by 40%
Equipped with a water temperature sensing system to automatically adjust the air pump pressure to compensate for the dissolution efficiency
Case data: The actual measurement of the Nordic cod farm still maintains 6.5mg/L dissolved oxygen at -2℃
 

3. How to balance oxygen supply and energy consumption costs?
Optimization strategy:
Choose a variable frequency PSA oxygen generator, which is 30% more energy-efficient than traditional models
Equipped with an intelligent dissolved oxygen controller, dynamically adjust oxygen supply based on real-time monitoring data
In areas with peak and valley electricity prices, it is recommended to configure an oxygen storage tank (to buffer low-load demand at night)
 

4. How to ensure the survival of cod in the event of a sudden power outage?
Emergency plan:
Dual power redundancy system: automatic switching of mains power + diesel generator (switching time <15 seconds)
Backup liquid oxygen tank: at least 12 hours of oxygen reserve (calculated according to the maximum breeding density)
Low power alarm device: automatically send SMS/APP notification when power is off

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