Table of Contents

1. Introduction

2. What Is a VPSA Oxygen Plant?

3. Why Oxygen Is Critical in Aquaculture

4. Product Description

5. Key Features

6. Technical Details

7. Advantages for Fish Farming

8. Applications

9. FAQs

1. Introduction

Aquaculture and fish farming depend on sufficient dissolved oxygen to maintain fish health, growth, and survival. A VPSA oxygen plant supplies 24/7 pure on-site oxygen to directly increase DO levels and optimize water quality. This enables higher stocking densities, faster growth rates, and improved yields.

2. What Is a VPSA Oxygen Plant?

VPSA or Vacuum Pressure Swing Adsorption is an on-site oxygen generator technology. It works by adsorbing air onto molecular sieves in a vacuum. Oxygen is released as pressure swings between adsorption and desorption phases. A VPSA unit generates 90–95% pure oxygen. 

3. Why Oxygen Is Critical in Aquaculture

u Better metabolism and growth rates

u Lower mortality and stress levels

u Improved feed conversion

u Maximizing stocking densities and yield

4. Product Description

u A VPSA oxygen system consists of:

u Air compressor and pre-filters

u Vacuum pumps

u VPSA adsorption towers with zeolite sieves

u Oxygen buffer tank and pressure control

u PLC-based automation for stable output

5. Key Features

1) Oxygen purity of 90–95%

2) Low-pressure, energy-efficient operation

3) Fully automatic, on/off operation

4) Compact, skid-mounted installation

5) Near-pond or tank placement

6. Technical Details

l Capacity: 5–500 Nm³/h (customizable)

l Pressure: 0.2–0.4 MPa

l Energy: 0.4–0.6 kWh per Nm³ oxygen

l Continuous 24/7 operation, low maintenance

7. Advantages for Fish Farming

l Eliminates L.O.X. cylinder deliveries and costs

l Ensures a reliable, continuous oxygen supply

l Facilitates higher biomass levels and faster growth

l Environmentally friendly no cryogenic process or transport

8. Applications

1. Freshwater and saltwater fish farming

2. Shrimp and prawn aquaculture

3. Recirculating Aquaculture Systems (RAS)

4. Fish hatcheries and broodstock oxygenation 

9. FAQs

Q1: What kind of maintenance is required for a VPSA oxygen plant?

A: Check compressors, valves, and sieve beds every 6–12 months.

Q2: Can VPSA units be used in remote fish farm locations?

A: Yes, they only need electricity and ventilation.

Q3: How long does a VPSA plant take to startup and reach full output?

A: It is around 15–20 minutes from power-on.