Submersible Jet Aerator for Wastewater Treatment with High Oxygen Transfer Rate and Automated Control to Prevent Sludge Settling

The QSB submersible jet aerator is a highly efficient gas-liquid mass transfer device designed for mid-to-deep aeration in equalization and mixing tanks. It delivers high oxygenation with low energy consumption while generating high-energy flow that prevents sludge settling. The system supports automated control and operates underwater to prevent winter freezing.

This aeration device serves biological water and wastewater treatment processes, efficiently oxygenating and mixing sewage-sludge mixtures in aeration tanks and aerated grit chambers.

During operation, a pressurized water jet creates negative pressure in the diffuser throat to draw in atmospheric air. The air-water mixture is discharged at high speed, creating wide and deep vortex mixing for effective aeration. With adjustable air intake and constant shaft power unaffected by depth, this jet aerator is ideally suited for tanks with fluctuating water levels.

• Comprises submersible pump and jet pump for simultaneous mixing and oxygenation
• High oxygen transfer rate with non-clogging impeller design
• Strong unidirectional flow drives effective circulation
• Stable motor load across varying water levels
• Outperforms surface aerators in oxygen transfer speed
• Prevents sludge settling with high bottom velocities
• Quiet, splash-free operation eliminates secondary pollution

• Maximum Temperature: 40°C
• pH Range: 5 - 9
• Maximum Density: 1150 kg/m³