Recirculating aquaculture systems are expanding rapidly across Southeast Asia and Latin America. Ozone is becoming the standard water treatment solution.
The global aquaculture water treatment market is valued at $2.5 billion in 2025 and projected to reach $4.2 billion by 2033, growing at a 7% CAGR . Within this sector, ozone generators are the fastest-growing technology segment, with a 15% market share and a projected 9.7% CAGR through 2033 .
Why Ozone for RAS?
RAS reuses 90-99% of its water. This conserves resources but creates a challenge: pathogens recirculate too.
Ozone solves this problem. It eliminates bacteria and viruses on contact, breaks down ammonia and nitrite, and improves water clarity .
For shrimp farmers, the benefits are measurable. A 2025 study published in ScienceDirect found that ozone nanobubble treatment achieved a 4-fold reduction in Vibrio spp. in water and 50% lower ammonia-nitrogen levels. Treated shrimp showed significantly higher growth weights from week five onward .
Another study combining ozone nanobubbles with biofloc technology achieved an 82% survival rate in shrimp, compared to 40% in untreated clear water systems. Vibrio spp. was reduced by 99.5% — from 228,885 to 107 CFU/mL .
What RAS Operators Need
Proper sizing matters. Ozone dosing typically ranges from 0.1 to 0.3 mg/L based on flow rate. For finfish, demand is approximately 12-16 grams of ozone per kilogram of feed. For crustacean species, this can rise to 25 grams per kilogram of feed .
Precision control is essential. ORP probes between 290-320 mV indicate effective treatment. Residual ozone concentrations above 0.9 mg/L can be toxic to fish .
Material selection prevents failure. Ozone gas is corrosive. Stainless steel tubing and components are essential for durability .
FEILI Positioning
FEILI Electric has supplied Aquaculture Ozone Generators to RAS facilities across Asia, Europe, and the Americas. Our units feature negative pressure design, precise dosing controls, and 304 stainless steel construction.
FEILI's Ozone for Aquaculture System solutions are used in salmon farms, shrimp operations, and hatcheries. One customer reported: "The ozone system paid for itself in 8 months."
For integrated water treatment, FEILI's Ozone Machine Water Irrigation systems handle intake water, process water, and discharge — one investment, multiple applications.
All FEILI aquaculture systems are powered by reliable Ozone Generator Machine technology, engineered for continuous operation in marine environments.
The Bottom Line
Southeast Asian shrimp farms and Norwegian salmon operations are adopting ozone rapidly. RAS expansion is driving demand. Chemical-free disinfection is no longer optional — it is required for export markets.
Need an aquaculture ozone system? Contact FEILI. We will help you size the right equipment for your RAS operation.
