High-pressure oxygenator
Saturation of water with oxygen with dissolution to 200% for incubation, rearing and emergency support. High efficiency, low gas losses, safe degassing.
- Concentration
- up to 200%
- Pressure
- 0.6–1.0 MPa
- O₂ supply
- 0.5–15 kg/h
*Actual efficiency depends on temperature, salinity and hydraulics.
Replace oxygenator.jpg in the photo of your oxygenator.
Stable oxygen at every point
What does the equipment solve?
- High mass transfer rate (OTR) for feeding peaks and stress situations.
- Low O₂ losses due to high pressure and long contact.
- Uniform distribution along contours and pools, without “dead” zones.
- Automatic DO control and emergency channels in case of oxygen loss.
Equipment
- High pressure saturator (stainless steel/PP) with inspection windows and safety valve.
- High pressure pump with VFD, impulse protection, bypass for service.
- O₂ supply unit: PSA generator/LOX connection, reduction, flow meters.
- Degassing unit for excess gases and safe discharge into the hood.
- Sensors: DO (in lines and basins), pressure, flow; control panel/SCADA.
How does it work and what are the options?
A portion of the pressurized stream is mixed with oxygen in a saturation column. Due to the high pressure and increased contact surface, O₂ dissolves, and the “extra” gas is removed by degassing. Next, high-DO water is dosed into the common circuit.
- Target DO in swimming pools it is usually 7–12 mg/l (depending on type and temperature).
- Control: DO maintenance by PID, limit max. % gas saturation.
- Security: pressure relief, gas lock sensor, pump/O₂ interlock.
- Cone (oxygen cone) — compact, very high dissolution efficiency.
- Column saturator — simple revision, flexibly scalable.
- U-tube — ultra-long contact time in a limited area.
- Side-stream — saturation of part of the flow followed by mixing.
The choice of unit depends on the flow rate, required OTR and room dimensions.
Selection by task
- OTR (kg O₂/h) from needs: feeding, biomass, temperature, species.
- Sources of O₂: PSA - autonomy and low cost; LOX - peak performance and reserve.
- Dissolution efficiency: we aim for 90–98% (less losses in the gas phase).
- Hydraulics: ΔP, service bypass, noise/vibration isolation of the pump.
- Security: control of general gas saturation, degassing in front of swimming pools.
Options and integration
- Second saturator for peaks/reserve with automatic switching.
- DO sensors in each pool, centralized PID dosing control.
- O₂ flow metering system and dissolution efficiency reports.
- Version for sea water, thermal insulation, outdoor enclosures with heating.
Frequently asked questions
Is 200% DO safe?
Yes, supersaturation levels are generated inside the saturator. At the outlet we control DO and total gas saturation; excess gas goes into degassing. In the pool we keep the target range according to the type of fish.
PSA or liquid oxygen (LOX)?
PSA - low cost and autonomy, LOX - maximum peaks and reserve. On large farms they often install a combination of PSA + LOX as a backup.