Containerized Oxygen Gas Production Plant For Water Treatment

Product Introduction:

The Containerized Oxygen Gas Production Plant for Water Treatment is an onsite oxygen generation system designed for wastewater treatment plants, industrial effluent treatment systems, municipal treatment facilities, aquaculture water treatment, and other processes requiring a continuous supply of oxygen.
The system uses Pressure Swing Adsorption (PSA) technology to produce oxygen directly from atmospheric air. Compressed air is passed through zeolite molecular sieve beds, where nitrogen is selectively adsorbed while oxygen-rich gas passes through as the product gas. Multiple adsorption towers operate alternately to maintain continuous oxygen production.
For water treatment applications, the oxygen generated by the PSA system is normally transferred through an oxygen distribution pipeline to fine-bubble diffusers, oxygenation tanks, aeration reactors, oxidation systems, ozone-generation systems, or other downstream equipment.
Compared with conventional air blowers, oxygen injection can significantly increase the oxygen concentration available to the treatment process. This is useful where conventional aeration cannot provide sufficient oxygen transfer within the available tank volume, where dissolved oxygen requirements are high, or where treatment processes require oxygen-enriched conditions.

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Description

Technical Parameters

Integrated Process Flow Architecture

1. Air Intake

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2. Air Compress

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3. Air Treatment

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4. PSA Separation

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5. O₂ Buffer

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6. O₂ Transfer

Main Equipment Configuration

Component	Technical Function
Air Compressor	Supplies feed air for PSA separation
Air Dryer & Filters	Removes moisture, oil & particles
PSA Generator	Produces 90–95% O₂ gas
Oxygen Buffer Tank	Stabilizes pressure & flow rate
PLC + HMI System	Automatic control & monitoring
Outdoor Container	Climate & weather protection

Parameter Influence on O₂ Demand

Water Parameter	System Impact
Wastewater Flow	Overall treatment volumetric load
BOD / COD Load	Determines carbon oxidation demand
NH₃-N Concentration	Determines nitrification demand
Target DO & Temp	Defines availability & gas solubility
Tank Depth & Diffuser	Governs transfer efficiency (OTE)
Peak Loading	Determines maximum generator capacity

Oxygen Transfer Options

Fine-Bubble Diffusers

Bottom-mounted diffusers provide high gas-liquid contact area for continuous aerobic processes.

Venturi Injectors

Mixes pure oxygen with recirculated stream prior to main tank injection without large basin diffusers.

Side-Stream Loops

Circulates a slip-stream of water through external oxygenation, returning oxygenated liquid back to reactor.

Oxygen Columns

Controlled vertical gas-liquid contactors designed for ultra-high dissolution absorption efficiency.

Target Applications

Municipal Wastewater Activated Sludge, BNR, MBR Basins & Capacity Expansion upgrades.

Industrial Effluent High BOD load treatment in Chemical, Pharma, Food, Paper & Textile plants.

Aquaculture (RAS) Continuous aeration for biofilters, fish/shrimp hatcheries & grow-out tanks.

Required Parameters for Engineering Sizing

To accurately size the compressor, PSA adsorption capacity, and transfer system, please provide:

Treatment Flow Capacity (m³/day)
BOD & COD Loading (mg/L)
Ammonia Concentration ($\text{NH}_3\text{-N}$)
Target Dissolved Oxygen (DO mg/L)

Aeration Tank Depth & Transfer Method
Required Oxygen Flow (kg/h or Nm³/h)
Site Ambient Temp & Elevation
Available Electrical Power Supply

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