Industrial gases and gas equipment are widely used in the aquaculture industry to enhance various aspects of fish and seafood production, improve water quality, and ensure the overall health and growth of aquatic organisms. Here are some key applications of industrial gases and gas equipment in aquaculture:
Proper oxygen levels are crucial for the survival and growth of aquatic organisms. Oxygen is often added to the water using diffusers or aerators to maintain dissolved oxygen levels necessary for respiration. This is especially important in densely stocked aquaculture systems.
Carbon Dioxide Removal:
Accumulation of carbon dioxide can lead to stress and poor growth in aquatic animals. Aeration and degassing systems are employed to remove excess carbon dioxide and maintain optimal water quality.
Gases like carbon dioxide and sulphur dioxide can be used to adjust and control the pH of water in aquaculture systems. Maintaining the appropriate pH level is essential for the health of aquatic organisms and the efficiency of biofiltration.
Ozone gas is used as a powerful disinfectant in aquaculture systems. It can help control pathogens, reduce organic matter, and improve water quality. Ozone treatment is especially beneficial in recirculating aquaculture systems (RAS).
Ammonia and nitrite are byproducts of fish waste and uneaten feed. These compounds can be toxic to aquatic animals at high concentrations. Nitrification processes and biofiltration systems use nitrogen gas to convert ammonia to less harmful forms.
Anesthesia and Sedation:
Industrial gases like carbon dioxide or clove oil are used for sedation and anesthesia during handling, transportation, and medical procedures in aquaculture operations.
Aeration during Transportation:
When transporting live aquatic organisms, oxygen cylinders and diffusers are used to ensure proper oxygen levels, reducing stress and mortality during transit.
In some aquaculture systems, gases like propane or butane are used as fuel sources for heating devices to maintain optimal water temperatures, especially in colder climates.
Aquaculture often involves the cultivation of microalgae as a food source for larval stages of aquatic organisms. Gases like carbon dioxide are supplied to these cultures to enhance microalgae growth through photosynthesis.
Gas Monitoring and Safety:
Gas monitoring systems are essential for detecting and alerting aquaculture operators to gas leaks or deviations from safe levels. This helps ensure the safety of both aquatic organisms and personnel.
Aeration for Pond and Raceway Systems:
In pond and raceway aquaculture systems, diffused aeration is used to increase dissolved oxygen levels and prevent stratification, particularly in systems with low water exchange rates.
Cryopreservation of Aquatic Germplasm:
Cryopreservation of aquatic germplasm, such as fish eggs or sperm, requires the use of liquid nitrogen for long-term storage and genetic preservation.
Industrial gases and gas equipment significantly contribute to the sustainability, efficiency, and productivity of the aquaculture industry by optimizing water quality, supporting breeding efforts, and improving the overall well-being of aquatic organisms.