70Nm³/h 95% Purity PSA Oxygen Generation Plant for Aquaculture
Dissolved oxygen (DO) is essential for aquaculture operations. Insufficient oxygen levels lead to fish and shrimp hypoxia, reduced growth rates, and potential mass mortality, directly impacting breeding profitability. Our PSA Oxygen Generator, a core industrial oxygen generation system, utilizes PSA technology for oxygen generation to physically separate oxygen from air using high-performance molecular sieves, producing 95% pure oxygen without chemical additives.
Compared to traditional oxygenation methods like impeller aerators and oxygen bombs, our system delivers superior oxygen transfer efficiency, maintains stable DO levels, and reduces labor costs. This 70Nm³/h model is specifically optimized for aquaculture applications, balancing output capacity, energy consumption, and environmental adaptability for large-scale fish ponds, recirculating aquaculture systems (RAS), and shrimp breeding facilities.
Technical Specifications
| Gas Production (m³/h) |
Oxygen Concentration (%) |
Oxygen Pressure (MPa) |
Power Consumption (kW) |
Host Weight (kg) |
Dimensions (mm) |
Air Loss Factor |
40L Bottles per Day |
| 3 | 93±3 | 0.4±0.1 | 0.2 | 600 | 1500×900×1500 | 13.5 | 12-15 |
| 5 | 93±3 | 0.4±0.1 | 0.2 | 900 | 1600×900×1500 | 13.5 | 20-24 |
| 10 | 93±3 | 0.4±0.1 | 0.2 | 1200 | 1600×900×1900 | 13.5 | 40-48 |
| 20 | 93±3 | 0.4±0.1 | 0.2 | 1500 | 1900×1000×2180 | 13.5 | 80-96 |
| 30 | 93±3 | 0.4±0.1 | 0.2 | 2000 | 2000×1100×2180 | 13.5 | 120-154 |
| 40 | 93±3 | 0.4±0.1 | 0.2 | 2500 | 2600×1200×2300 | 13.5 | 160-192 |
| 50 | 93±3 | 0.4±0.1 | 0.5 | 2800 | 1800×1500×2400+800 | 13.5 | 200-240 |
| 60 | 93±3 | 0.4±0.1 | 0.5 | 3200 | 1800×1500×2600+800 | 13.5 | 240-184 |
| 70 | 93±3 | 0.4±0.1 | 0.5 | 3500 | 1800×1600×2800+800 | 13.5 | 280-236 |
| 80 | 93±3 | 0.4±0.1 | 0.5 | 4000 | 1800×1600×2900+1000 | 13.5 | 320-394 |
| 90 | 93±3 | 0.4±0.1 | 0.5 | 4800 | 2000×1600×2800+1000 | 13.5 | 360-432 |
| 100 | 93±3 | 0.4±0.1 | 0.5 | 5800 | 2200×1600×2900+1000 | 13.5 | 400-480 |
| 120 | 93±3 | 0.4±0.1 | 0.5 | 6500 | 2400×1600×3100+1000 | 13.5 | 480-576 |
PSA Oxygen Plant Working Principle and Aquaculture Optimization
The PSA oxygen plant working principle relies on cyclic adsorption and regeneration of molecular sieves:
- Air Purification: Ambient air is filtered through a three-stage system (dust removal, dehumidification, oil removal) to remove impurities harmful to molecular sieves—critical for humid aquaculture environments.
- Pressure Adsorption: Purified air enters dual adsorption towers at 0.6MPa; molecular sieves selectively adsorb nitrogen, leaving 95% pure oxygen stored in a buffer tank.
- Oxygen Supply: Oxygen is pressurized to 0.3MPa and delivered to aeration devices, converting into micro-nano bubbles for efficient dissolution.
- Regeneration: Saturated molecular sieves are depressurized to release nitrogen, regenerating for reuse—no chemical waste, ensuring aquaculture water safety.
Aquaculture-specific optimizations include: corrosion-resistant 304 stainless steel body (to withstand pond water splashes), mobile crawler base (for transfer between ponds), and rainproof control cabinet (protecting electrical components in open-air environments).
PSA vs VSA Oxygen Generators for Aquaculture
Both technologies belong to pressure swing adsorption oxygen plant systems, but their aquaculture applicability differs:
- PSA Oxygen Generator: Advantages include compact size, fast start-up, and low maintenance—ideal for medium-scale farms (50-100 acres) with fluctuating oxygen demand. The 70Nm³/h model's frequency conversion design reduces energy use during low-demand periods.
- VSA Oxygen Generator (Vacuum Swing Adsorption): Uses vacuum regeneration for lower energy consumption but has larger size, higher initial investment, and longer start-up time. It suits super-large farms (≥200 acres) with stable, high oxygen demand.
- Key Tradeoff: For 80% of aquaculture scenarios, the PSA plant's balance of cost, flexibility, and efficiency makes it more practical than VSA.
Environmental and Policy Advantages
With global emphasis on green aquaculture, pressure swing adsorption oxygen plant systems align with sustainable development goals:
- Energy Efficiency: The 70Nm³/h PSA plant reduces carbon emissions by approximately 20 tons/year compared to traditional aerators.
- Water Quality Protection: High oxygen transfer efficiency reduces organic matter accumulation in pond bottoms, lowering ammonia and nitrite levels.
- Policy Support: In many regions, aquaculture projects using energy-efficient oxygenation equipment qualify for subsidies, further reducing operational costs.
Conclusion
The 70Nm³/h 95% purity PSA Oxygen Generation Plant revolutionizes aquaculture oxygenation by combining PSA technology for oxygen generation with aquaculture-specific design. Its high oxygen transfer efficiency, low energy consumption, and stable performance solve the core challenges of large-scale breeding, while its cost advantage delivers significant long-term savings. For breeders aiming to improve survival rates, reduce costs, and comply with green policies, this PSA plant is a reliable, future-oriented investment that lays a solid foundation for efficient, sustainable aquaculture development.
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