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Biological Wastewater Treatment

Oxygen Transfer & Mixing

Aeration tanks provide the oxygen-rich environment necessary for aerobic advanced biological treatment. Microorganisms in the activated sludge consume organic pollutants, converting them to carbon dioxide, water, and new biomass. Our tanks feature optimised aeration systems that maximise oxygen transfer efficiency while maintaining complete mixed conditions.

Aeration tanks are the heart of activated sludge wastewater treatment systems. The design balances oxygen supply with mixing requirements to maintain a healthy population of microorganisms. Our tanks support various process configurations including conventional activated sludge, extended aeration, and nutrient removal processes.

Municipal WWTP

Activated sludge treatment

Industrial

Biological pre-treatment

Nutrient Removal

Nitrogen and phosphorus removal

Extended Aeration

High-efficiency treatment

Engineered for Biological Processes

Dimensions

  • Diameter Range2000mm - 8000mm
  • Height Range2500mm - 6000mm
  • Capacity Range10,000L - 500,000L
  • HRT Range4-24 hours

Aeration Options

  • Diffused AirFine/medium bubble
  • MechanicalSurface aerators
  • Jet AerationCombined mixing
  • OTEUp to 35%

Materials

  • ConcreteCast-in-place or GRC
  • SteelCoated carbon steel
  • StainlessSS304 / SS316
  • LiningsEpoxy, FRP

Features

  • DO ControlAutomated
  • MixingComplete mix
  • AccessWalkway/platform
  • InstrumentsDO, pH, MLSS

Rectangular Tank Dimensions & Volumes

Standard rectangular tank configurations with calculated capacities. Custom dimensions available upon request.

Containerised Tanks

  • Length Range1,500mm - 10,000mm
  • Width Range1,200mm - 2,400mm
  • Maximum Height2,300mm
  • Standard Height2,200mm / 2,100mm
  • Volume Range4m³ - 55m³
  • ConfigurationISO Container Compatible

Free-Standing Tanks

  • Length Range1,500mm - 10,000mm
  • Width Range1,200mm - 4,000mm
  • Maximum Height5,000mm
  • Common Heights2,400mm / 3,000mm / 4,000mm
  • Volume Range4m³ - 200m³
  • ConfigurationIndoor/Outdoor Installation
ConfigurationLength (mm)Width (mm)Height (mm)Volume (m³)Volume (Litres)
Containerised TANKS (Max Height: 2,300mm)
Compact C11,5001,2002,2003.963,960
Compact C22,0001,2002,2005.285,280
Standard C32,5001,5002,2008.258,250
Standard C43,0001,5002,2009.909,900
Medium C54,0001,8002,20015.8415,840
Medium C65,0002,0002,20022.0022,000
Large C76,0002,2002,20029.0429,040
Large C87,0002,3002,20035.4235,420
XLarge C98,0002,3002,20040.4840,480
Max C1010,0002,4002,30055.2055,200
FREE-STANDING TANKS - Low Profile (Height: 2,400mm)
Low L12,0001,5002,4007.207,200
Low L23,0002,0002,40014.4014,400
Low L34,0002,5002,40024.0024,000
Low L45,0002,5002,40030.0030,000
Low L56,0003,0002,40043.2043,200
Low L68,0003,0002,40057.6057,600
Low L710,0003,5002,40084.0084,000
FREE-STANDING TANKS - Medium Height (Height: 3,000mm)
Medium M12,0001,5003,0009.009,000
Medium M23,0002,0003,00018.0018,000
Medium M34,0002,5003,00030.0030,000
Medium M45,0002,5003,00037.5037,500
Medium M56,0003,0003,00054.0054,000
Medium M68,0003,0003,00072.0072,000
Medium M710,0003,5003,000105.00105,000
FREE-STANDING TANKS - High Profile (Height: 4,000mm - 5,000mm)
High H12,5002,0004,00020.0020,000
High H23,0002,5004,00030.0030,000
High H34,0003,0004,00048.0048,000
High H45,0003,0004,00060.0060,000
High H56,0003,5004,00084.0084,000
High H68,0003,5004,000112.00112,000
Max H78,0004,0005,000160.00160,000
Max H810,0004,0005,000200.00200,000

Important Notes:

  • All dimensions are internal (usable) dimensions
  • Volumes calculated using rectangular prism formula: L × W × H
  • Actual working capacity typically 90-95% of total volume
  • Containerised tanks engineered for ISO container compatibility (width ≤ 2,400mm)
  • Free-standing tanks can be customised beyond standard dimensions
  • Wall thickness varies based on material, pressure, and chemical compatibility

Portable Aeration Solutions

Pre-engineered aeration systems in ISO containers for rapid deployment.

20-Foot Container Aeration Tank

Compact advanced biological treatment system for small applications. Includes aeration tank, diffused aeration system, blower, and DO control in a weatherproof container.

Up to 15,000L capacityFine bubble aerationAuto DO control

40-Foot Container Aeration Tank

Full-scale advanced biological treatment system for industrial applications. Features larger capacity, enhanced aeration, advanced controls, and SCADA integration.

Up to 50,000L capacityHigh-efficiency aerationSCADA ready

SCADA & Control Systems

Optional integrated automation for remote monitoring and control of your process tank operations.

SCADA Ready

Our process tanks can be equipped with comprehensive SCADA integration for real-time monitoring and control of agitation, temperature, pH, level, and process parameters. Remote access enables automated process control with recipe management, batch reporting, and alarm notifications.

Process ControlTemperature ControlpH MonitoringAgitation ControlBatch Reporting
Learn About SCADA Integration

Complete Your Biological System

Need an aeration tank solution?

Contact our engineering team to discuss your advanced biological treatment requirements.

Industries We Serve

Our expertise spans multiple industries with sector-specific water treatment solutions.