Long-lasting performance with exceptional oxygen-transfer rates of any mechanical aeration system on the market The Twister® low-speed aerator is designed for long-term, continuous operation. Twister optimizes the spray of water droplets, resulting in some of the highest oxygen-transfer rates of any mechanical aeration system.
The TWISTER® low-speed aerator’s high oxygen transfer makes it ideal for a wide range of high-oxygen-demand biological treatment applications, from activated sludge to oxidation ditches and extended aeration operations in municipal, petrochemical, pulp and paper, and other industries.
Available with coated-frame and nonmetallic float options, the TWISTER Low-Speed Aerator can be configured as a floating unit using a three-pod, stainless-steel float and support infrastructure or a fixed unit using an adjustable mounting plate for optimal operational performance.
With thousands of installations worldwide, the TWISTER is proven to be a reliable low-speed aerator for your wastewater treatment needs.
The TWISTER aerator, designed for continuous long-term operation, features a hydrodynamically efficient rotor constructed from innovative composite material and molded to optimize the spray of water droplets. This results in some of the highest oxygen-transfer rates of any mechanical aeration system. This surface aerator utilizes advanced power transmission technology to convert minimal energy into maximum rotor torque, ensuring excellent aeration and deep basin mixing. It comes in models ranging from 2 to 150 horsepower (1.5 to 112 kW) at 50 or 60 Hz.
TWISTER significantly enhances water’s dissolved oxygen (DO) levels, fostering a healthier aquatic ecosystem. This aeration method increases oxygen concentration, is vital for aquatic life survival, and encourages the growth of aerobic bacteria responsible for decomposing harmful organic compounds, thereby enhancing the overall water quality. These systems create a constant water flow, effectively mixing oxygen to the solution to help mitigate the effects of thermal stratification, ensuring a uniform distribution of oxygen and temperature throughout the water body. Low-speed aerators maintain optimum dissolved oxygen levels, creating a balanced aquatic environment.
All TWISTER low-speed aerators consist of a motor mounted to a gear reducer and a specially designed rotor attached to the bottom of an extended shaft. When activated, the TWISTER turns slowly (typically 40 to 100 rpm) while the rotor fins pump large amounts of water into the air in a fine spray. These tiny droplets create a 360-degree circular pattern.
TWISTER creates high oxygen transfer with its large surface-to-volume water droplet ratio and extended exposure to air after spraying. Pumping oxygen-deficient water from the bottom of a basin and exposing it to the air above its surface provides faster mass transfer from ambient air to the water droplet.
The TWISTER low-speed aerator’s deep pumping action generates effective localized mixing to optimize many wastewater treatment processes, including those requiring fast and efficient oxygen transfer, such as pulp and paper, food processing, and other industries.
The TWISTER is utilized across a diverse range of applications such as:
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