PSA Oxygen Generator For Fish Farming

Shenger Gas provides on-site oxygen generation solutions based on Pressure Swing Adsorption (PSA) technology for aquaculture operations requiring continuous oxygen supply. The system uses zeolite molecular sieve as the adsorbent medium, which selectively adsorbs nitrogen from compressed air under pressure while enriching oxygen as the product gas. Through periodic pressure reduction, the adsorbed nitrogen is desorbed to regenerate the molecular sieve, enabling continuous and stable oxygen delivery. The complete system features a compact design with automated operation and serves as a practical alternative to liquid oxygen tanks or cylinder-based oxygen supply methods.

Basic Principle

The core of PSA oxygen generation lies in the kinetic separation effect of zeolite molecular sieve on nitrogen and oxygen molecules. Compressed air, after purification treatment, enters the adsorption tower where, at operating pressures of 0.4–0.6MPa, nitrogen is adsorbed into the micropores of the molecular sieve while oxygen passes through the adsorbent bed and is collected as product. When the adsorption tower approaches saturation, the system switches to a depressurization and desorption phase, releasing the adsorbed nitrogen to regenerate the molecular sieve. With two towers operating alternately, a continuous and stable stream of product oxygen is produced.

The PSA oxygen generator for fish farming applies this physical separation principle to deliver sustained high-concentration oxygen output without the use of chemical agents.

Technical Specifications

Energy consumption data are measured under standard ambient conditions (inlet air temperature ≤35°C, relative humidity ≤80%). Flow rate and purity can be adjusted according to actual oxygen demand; energy consumption decreases proportionally under partial-load operation.

Operating Environment Requirements

The equipment is designed for normal operation within an ambient temperature range of 5°C–45°C and relative humidity not exceeding 80%. When conditions fall outside this range, additional inlet air pre-treatment equipment is required. Power consumption in standby mode is below 50W and approaches zero when the system is completely shut down. With variable frequency drives on the compressor, energy consumption can be further optimized under partial load conditions.

Design Basis and Standards

Equipment design and manufacturing comply with the following standards:

• GB/T 4831 Pressure Swing Adsorption Oxygen Equipment
• TSG 21 Supervision Regulation on Safety Technology for Stationary Pressure Vessels
• GB 12348 Emission Standard for Industrial Enterprises Noise at Boundary
• GB/T 4980 Measurement Method for Noise of Positive Displacement Compressors
• Electrical systems comply with IEC 60204-1 requirements

All pressure vessels are manufactured by certified entities and undergo mandatory inspection before leaving the factory. The complete system is pressure-tested at 1.5 times the design pressure, with a 24-hour pneumatic leak test performed under holding pressure. For noise control, compressors are fitted with acoustic enclosures, keeping the sound level within 75dB(A) at one meter, suitable for continuous operation in aquaculture facilities.

Applicable Scenarios

This system fits aquaculture sites that run on steady oxygen around the clock-places where liquid oxygen delivery gets complicated or cylinder refills keep eating into operating budgets. The outlet hooks straight to microporous aerators, ejectors, or existing pipeline networks without reworking your current setup.

Shenger Gas builds the PSA oxygen generator for fish farming with a flexible purity adjustment range to accommodate varying oxygen demand throughout the production cycle, allowing operators to match output to actual requirements without over-specifying the system.

Customization Options

Shenger Gas provides non-standard customization based on specific operating conditions, including:

• Peak oxygen demand calculation based on water volume and anticipated biological load to match adsorption tower sizing
• Enhanced inlet air pre-treatment for high-temperature, high-humidity coastal regions
• Skid layout optimization according to site spatial constraints
• Configuration of remote start/stop, automatic oxygen concentration regulation, and fault SMS alert functions based on control requirements

The customization process maintains communication with the user at each stage, from requirement confirmation and scheme design through drawing review and manufacturing.

Service Scope

Delivery lead time runs 30–50 working days from contract signing, varying with customization scope. Foundation drawings go out before shipment, and remote guidance covers installation positioning and piping hookup once the unit arrives. Commissioning support includes startup sequence and parameter setup after power and air are connected.

Warranty covers 12 months from final acceptance. Manufacturing defects within that period get replacement parts and remote troubleshooting. After warranty, technical support and spare parts stay available-pneumatic valves, filter elements, seals, and other wear items are held in regular stock.

The control system supports a 4G communication module for remote access to operating data, oxygen trends, and fault logs via mobile or PC. Software updates are included; no recurring platform fees apply.

Information Required for Sizing

To facilitate accurate sizing and quotation, users are encouraged to provide the following information:

• Total water volume or anticipated stocking density
• Target dissolved oxygen level or current oxygen supplementation method and consumption
• Available on-site power capacity and voltage rating
• Installation area dimensions and ventilation conditions
• Local summer maximum temperature and winter minimum temperature

Shenger Gas provides sizing calculation sheets for user review to ensure equipment parameters match actual application requirements. Users seeking additional configuration options for the PSA oxygen generator for fish farming may submit operating parameters to receive a tailored proposal.

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