Dissolved oxygen (DO) is a lifeline for aquaculture—insufficient oxygen leads to fish and shrimp hypoxia, reduced growth rates, and even large-scale mortality, directly impacting breeding benefits. The psa oxygen generator (Pressure Swing Adsorption Oxygen Generator), a core type of Industrial Oxygen Generator, operates on psa technology for oxygen generation to physically separate oxygen from air using high-performance molecular sieves, producing 95% pure oxygen without chemical additives. Compared with traditional oxygenation methods (impeller aerators, oxygen bombs), it delivers higher oxygen transfer efficiency, stable DO levels, and lower labor costs. This 70Nm³/h model, optimized for aquaculture scenarios, balances output, energy consumption, and environmental adaptability, making it ideal for large-scale fish ponds, recirculating aquaculture systems (RAS), and shrimp breeding bases.
| Gas production m³/h | Oxygen concentration% | Oxygen pressure Mpa | Power 220V Power/kw | Host weight/kg | Dimensions/mm | Air loss factor | Number of bottles per day 40L/120-150kg |
| 3 | 93±3 | 0.4±0.1 | 0.2 | 600 | 15009001500 | 13.5 | 12-15 |
| 5 | 93±3 | 0.4±0.1 | 0.2 | 900 | 16009001500 | 13.5 | 20-24 |
| 10 | 93±3 | 0.4±0.1 | 0.2 | 1200 | 16009001900 | 13.5 | 40-48 |
| 20 | 93±3 | 0.4±0.1 | 0.2 | 1500 | 190010002180 | 13.5 | 80-96 |
| 30 | 93±3 | 0.4±0.1 | 0.2 | 2000 | 200011002180 | 13.5 | 120-154 |
| 40 | 93±3 | 0.4±0.1 | 0.2 | 2500 | 260012002300 | 13.5 | 160-192 |
| 50 | 93±3 | 0.4±0.1 | 0.5 | 2800 | 180015002400+800 | 13.5 | 200-240 |
| 60 | 93±3 | 0.4±0.1 | 0.5 | 3200 | 180015002600+800 | 13.5 | 240-184 |
| 70 | 93±3 | 0.4±0.1 | 0.5 | 3500 | 180016002800+800 | 13.5 | 280-236 |
| 80 | 93±3 | 0.4±0.1 | 0.5 | 4000 | 180016002900+1000 | 13.5 | 320-394 |
| 90 | 93±3 | 0.4±0.1 | 0.5 | 4800 | 200016002800+1000 | 13.5 | 360-432 |
| 100 | 93±3 | 0.4±0.1 | 0.5 | 5800 | 220016002900+1000 | 13.5 | 400-480 |
| 120 | 93±3 | 0.4±0.1 | 0.5 | 6500 | 240016003100+1000 | 13.5 | 480-576 |
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: a corrosion-resistant 304 stainless steel body (to withstand pond water splashes), a mobile crawler base (for transfer between ponds), and a rainproof control cabinet (protecting electrical components in open-air environments).
Both belong to pressure swing adsorption oxygen plant technology, 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 (e.g., daytime with high photosynthesis).
- vsa oxygen generator (Vacuum Swing Adsorption): Uses vacuum regeneration for lower energy consumption (≤0.4kWh/Nm³ O₂) but has larger size, higher initial investment ($35,000-$45,000), and longer start-up time (≥10 minutes). It suits super-large farms (≥200 acres) with stable, high oxygen demand—overkill for most medium-scale operations.
- Key tradeoff: For 80% of aquaculture scenarios, the PSA plant’s balance of cost, flexibility, and efficiency makes it more practical than VSA.
With global emphasis on green aquaculture, pressure swing adsorption oxygen plant aligns with sustainable development goals:
- Energy efficiency: The 70Nm³/h PSA plant reduces carbon emissions by ~20 tons/year vs. traditional aerators, complying with low-carbon aquaculture policies.
- Water quality protection: High oxygen transfer efficiency reduces organic matter accumulation in pond bottoms, lowering ammonia and nitrite levels—avoiding water pollution and reducing the need for chemical water conditioners.
- Policy support: In many regions, aquaculture projects using energy-efficient oxygenation equipment qualify for subsidies (e.g., 10%-15% of equipment cost), further reducing enterprise burdens.
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 pain points of large-scale breeding, while its psa oxygen plant cost advantage delivers significant long-term savings. Compared with vsa oxygen generator and traditional methods, it better balances practicality and economy for most aquaculture scenarios. For breeders aiming to improve survival rates, reduce costs, and comply with green policies, this PSA plant is a reliable, future-oriented investment—laying a solid foundation for efficient, sustainable aquaculture development.
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70Nm³/h 95% Purity Fully Automatic PSA Oxygen Generator Plant for Aquaculture Images
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