Jet Aerator Technical Manual

Primary ejection

As illustrated by figures,pressurized motive flow (red color ) enters into a convergent nozzle in the injection chamber to form a high velocity jet stream, The vacuum produced by high velocity flow enable materials (blue color ) to be suctioned into the chamber and enters into the motive flow, results in forming a new mix fluid (green color). The mixture flows through diffuser toward the out let with reducing velocity and increasing pressure.

Secondary ejection

The fluid mixture from injector ejects into the pond/tank/pipe line,drawing 4-5 times quantity of flow around it, resulting a second mix and

Series of Venturi Injector for Wastewater Treatment

GW series venturi injectors provide water/wastewater industries with a new substitute to blower and mechanical aeration systems with the following advantages：

• Higher oxygen transfer efficiency, less gas delivery required, low power consumption
• Simple pipeline,less facility space taking
• Less maintenance, no fouling factor in design
• Prolonged using life without performance decline
• Whisper operation
• Applicable to complete innovation installation without draining water from aeration pond/tank

Applications:

• Aeration and sludge treatment
• Ozone addiction and off-gas reuse
• River, pond, lake, reoxygenation
• Aquatic and aquarium

Function of secondary ejection nozzles:

1:To proceed further matter transfer driven by the concentration difference between mixture from the injector and water in ponds/tanks.

2:To do agitation in the ponds/tanks using residue water head from the injector.

To provide enough retention time:

A venturi type of cylinder plus to nozzle is designed to maintain contacting time of gas in water. This configuration will have the same effect as increasing the water depth.