QSB Series Floating Jet Aerator (Pontoon Submersible Aerator)
Product Overview & Core Value Proposition
The QSB Series Floating Jet Aerator (also known as a Pontoon Submersible Jet Aerator) is engineered specifically for biological wastewater treatment processes where water levels fluctuate drastically, or where draining the tank for civil installations is impossible. By integrating a heavy-duty submersible pump, a highefficiency venturi nozzle, and a robust marine-grade pontoon system, this unit floats seamlessly on the water surface.
Why Choose the QSB Floating Design? Unlike traditional fixed-base aerators, the QSB floating jet aerator self-adjusts to water level changes, keeping the jet nozzle at a constant submergence depth (Hsub) to guarantee consistent oxygen transfer rate (SOTE) and power consumption at all times.
Key Features & Industrial Advantages
Adaptive Water Level Operation: Rises and falls naturally with the water level. Perfect for equalization tanks, sequencing batch reactors (SBR), and emergency aeration bypasses.
Zero Civil Infrastructure Cost: No concrete foundations, anchor bolts, or bottom platforms are required. Simply position the floating unit and secure it using stainless steel guide ropes or mooring lines to the bank.
Non-Stop Production Maintenance: Can be deployed directly into fully operational, live wastewater aeration tanks. Maintenance is completely overhead—simply pull the pontoon to the lagoon bank without draining thousands of tons of wastewater or renting heavy cranes.
Dual Action (Aeration + Deep Mixing): The angled hydraulic jet (typically 15° to 45° downward) delivers deep-tank oxygenation while generating a powerful surface-to-bottom circulation loop that eliminates dead zones and breaks surface scum.
Industrial-Grade Customization: Available in SUS304, SUS316L, or Duplex Stainless Steel for high-salinity and corrosive industrial chemical wastewater applications. Dual-frequency and multi-voltage motors (e.g., 380V/400V/415V/440V at 50Hz/60Hz) are customized to match international grid standards.
Working condition
The floating QSB jet aerator is widely exported globally for the following demanding sectors:
Industrial Wastewater Equalization Tanks (EQ Tanks): Buffers heavy load surges where water depths change continuously throughout the production shift.
Large-scale Aerated Lagoons & Stabilization Ponds: Cost-effective solution for large surface areas typical in paper mills, textile mills, and food processing plants.
River & Canal Restoration Projects: Temporarily or permanently deployed in natural water bodies to rapidly increase dissolved oxygen (DO) levels without disturbing soft bottom sediments or riverbeds.
SBR (Sequencing Batch Reactors): Seamlessly handles the sequence of fill, react, and settle cycles without complex decanting mechanisms interfering with aeration setups.
Technical Specifications
Our QSB series is highly scalable to support varied tank depths and organic loading requirements
Model | QSB0.75 | QSB1.5 | QSB2.2 | QSB3 | QSB4 | QSB5.5 | QSB7.5 |
Power (kW) | 0.75 | 1.5 | 2.2 | 3 | 4 | 5.5 | 7.5 |
Current (A) | 2.9 | 3.7 | 5 | 6.4 | 8.2 | 12.4 | 16.3 |
Voltage (V) | 380 | ||||||
Speed (r/min) | 2900 | 2900 | 2900 | 2900 | 2900 | 1450 | 1450 |
Frequency (Hz) | 50 | ||||||
Insulation | F | ||||||
Air intake (m3/h) | 10 | 22 | 35 | 50 | 75 | 80 | 100 |
Oxygenation capacity (kg/h) | 0.5 | 1.26 | 2.3 | 2.8 | 3.75 | 6 | 7.9 |
Intake DN (mm) | 32 | 32 | 50 | 50 | 50 | 50 | 50 |
Remark | The air intake and oxygenation capacity in the table are test values under standard test conditions (20°C water temperature, air pressure 101.325KPa), the aerator diving depth is 3 meters, and the test medium is clean water. If the diving depth air intake volume is greater than the value in the table, the user needs to provide the diving depth and air intake volume so that the company can design and provide optimized equipment. | ||||||
Installation
Deep water self-priming submersible jet aerators are installed in two types: auto-coupling and movable. They have the characteristics of flexible installation location and low cost.

Movable type installation dimension
Model | H | h | L | D | F | d | B | E | A |
QSB0.75 | Customized | 438 | 1136 | φ100 | 85 | DN32 | 260 | 494 | 107 |
QSB1.5 | 438 | 1136 | φ100 | 85 | DN32 | 260 | 494 | 107 | |
QSB2.2 | 435 | 1249 | φ104 | 141 | DN50 | 280 | 369 | 126 | |
QSB3 | 435 | 1325 | φ104 | 141 | DN50 | 280 | 369 | 126 | |
QSB4 | 580 | 1502 | φ104 | 149 | DN50 | 280 | 414 | 203 | |
QSB5.5 | 915 | 1958 | φ104 | 137 | DN50 | 280 | 689 | 252 | |
QSB7.5 | 915 | 2069 | φ104 | 137 | DN50 | 280 | 689 | 252 |







