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At Biojet, we have taken jet aeration to the next level. Our Laval jet aerators are designed to meet the most demanding wastewater treatment challenges with outstanding efficiency, reliability and affordable price.
Biojet® jet aerator
Biojet® Laval jet aerator made of stainless steel, suitable for MBR processes treating high-concentration organic wastewater.
Biojet® jet aerator
Biojet® Laval Dome Jet Aerator made of stainless steel, suitable for membrane bioreactor processes treating kitchen food-processing wastewater.
Biojet® jet aerator
Biojet® Laval jet aerator made of PP engineering plastic, suitable for industrial wastewater, municipal sewage and landfill leachate treatment.
Biojet® jet aerator
Biojet® integrated self-aspirating jet aerator, ideal for rural small municipal wastewater treatment.
Biojet® Laval Jet Aerator
Biojet® Ring-shaped Laval jet aerator, jet mixer, ideal for nitrification tanks with numerous internal columns.
Biojet® Laval Jet Aerator
Biojet® Directional or Bi-directional Laval Jet Aerator, jet mixers for deep aeration basins and oxidation ditch processes.
40–45% OTE
Venturi‑accelerated jets generate a fine bubble cloud and rapid surface renewal at the liquid surface, maximizing mass transfer under stable hydrodynamic conditions.
Service Ø 10–12 m
Powerful jet stream and efficient mixing enable larger service area per unit compared to conventional diffusers or mechanical aerators.
0.85–0.9
Stable oxygen transfer performance even under high MLSS and variable wastewater conditions.
50% energy saving
Optimized air-to-water ratio reduces blower load and operational costs while delivering measurable energy savings across the oxygenation process.
20+ years
Reinforced flange design eliminates risk of breakage. High-strength throat lining prevents erosion and maintains performance over years of operation.
Project-specific
We provide case-by-case system design that adapt to complex basin geometry, oxidation ditch loops, and deep tank processes without major civil works.
Our flagship product, the Laval Jet Aerator, is recognized industry-wide for its performance, durability, and efficiency. Engineered for maximum oxygen transfer and minimal maintenance, our jet aerators set the benchmark in wastewater treatment. Our engineer from Germany ensures solutions of the highest quality and effectiveness.
Get in touch with our experts to discuss your project needs and discover how Biojet can optimize your operations.
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Traditional aeration methods are highly energy-intensive, accounting for a large portion of a treatment plant's operational expenses. However, jet aerators work exceptionally well in deep tanks while handling various types of wastewater.
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By studying how different countries approach aeration tank design and analyzing the effectiveness of various treatment of sewage water techniques, we can identify sustainable solutions to expand India's sewage treatment infrastructure.
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Membrane bioreactors have emerged as the preferred method for treating wastewater in 2025, transforming how we approach water reclamation and reuse.
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Biojet’s advanced oxidation ditch solution—powered by jet aeration—represents a leap forward in oxygen transfer and flow control.
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Both stainless steel and PP can withstand high concentrations of chloride ion corrosion, making them suitable for the treatment of landfill leachate and food waste wastewater. The choice of material depends on the owner's usage experience and preferences. The performance indicators of jet aerators made from both materials are entirely identical.
When the treatment capacity is low, the aeration rate can be reduced by lowering the air blower's output via frequency conversion. It is not recommended to adjust the flow rate of the jet pump. The operating principle of jet aeration relies on using water flow to entrain air, with the water flow rate typically designed at a fixed value. Reducing the flow rate will impair oxygen transfer efficiency, specifically manifested as enlarged bubble size and intensified surface turbulence. During the initial debugging phase, if the wastewater volume is too low, the blower can be shut off. By opening the vent valve on the air pipe, the system can draw in air through self-priming for aeration.
Lead time is usually 30–50 days (subject to order quantity and model specifications).
During low liquid levels, the back pressure on the blower is reduced. If there are significant variations in the installation height of the jet aerators (measured from the nozzle centerline to the tank bottom), and only the blower is operating, the air will "preferentially flow to the jet aerator nozzles with lower resistance." Specifically, aerators with nozzles positioned higher above the tank bottom will exhibit greater air output, while those installed lower will have reduced air output. However, this phenomenon gradually diminishes and eventually disappears once the jet pumps are activated and the liquid level rises. The allowable tolerance for jet aerator installation height is within 2cm.
Just like conventional fine-bubble aeration systems, jet aeration systems also require a vent valve to be installed on the air pipeline to ensure the blower can start without load. In a jet aeration system, the vent valve is to be opened prior to blower initiation and closed once the set blower frequency is attained. The valve reverts to an open state upon blower deactivation. If this vent valve is not present, special attention must be paid to the shutdown sequence of the jet aeration system: stop the jet pump first, and then the blower! If the blower is stopped before the jet pump, a negative pressure will form in the air pipe, creating a siphoning effect that causes water from the nitrification tank to backflow into the blower cavity.
Yes. Our dedicated support team provides global after-sales service, ensuring long-term customer satisfaction.