Aspirator Type Aerators

Aspirator type aerators are surface-mounted, self-contained aeration units that draw atmospheric air through a hollow shaft and disperse it into the water body using a rotating propeller. The rotation of the propeller creates a low-pressure zone at the hollow shaft inlet, drawing air in without any external blower or compressor equipment. The aspirated air is then sheared into fine bubbles and dispersed radially into the water stream created by the propeller, achieving simultaneous aeration and mixing in a single unit.

All submerged components are constructed from AISI 304 stainless steel or higher-grade alloys, providing excellent corrosion resistance for long-term immersion in wastewater and industrial effluents. A key design feature is the complete absence of seals, bearings, or gear mechanisms in the submerged portion — eliminating the most common failure points and maintenance requirements of conventional aerators. The clog-resistant propeller geometry handles wastewater with suspended solids, fibrous material, and debris without blockage.

Aspirator aerators are particularly well-suited for open lagoons, stabilization ponds, oxidation ditches, and large-volume treatment tanks where fixed diffused aeration pipework would be difficult to install or maintain. Their lightweight, modular design allows them to float on the water surface or be mounted on fixed structures at varying water levels, providing installation flexibility that diffused aeration systems cannot match.