For applications such as lime and aluminium sulphate, our standardised high-efficiency impellers are recommended. These three-bladed axial down-pumping designs are best suited for blending applications, while four-bladed options are available for more aggressive blending requirements. All impellers are designed for low shear, high flow applications.

Flocculation is a highly shear-sensitive mixing application. Unlike most mixing processes, the primary function of a flocculator is simply to keep the water in motion, allowing the agglomeration of particles to proceed efficiently. Our impellers for flocculation are specifically developed to operate at low tip speeds, maintaining low shear and turbulence while generating high axial flow.

We also understand the importance of material selection in sanitation processes. For applications with high concentrations of chemicals such as calcium hypochlorite, our wet ends are typically made from carbon steel lined with fluoropolymer. In most cases, our wet ends are manufactured from 304 or 316 stainless steel to ensure long-term durability.

Mixtec’s impellers for wastewater treatment feature unique anti-snagging geometries specifically designed to avoid harmful rag entanglement. For smaller fully welded impellers, our backswept blade and ‘bolt-free’ one-piece designs offer anti-fouling properties with significantly lower power draw.

Larger impeller designs incorporate counter-sunk bolts through a keeper plate to secure the impeller to the shaft. These combined axial and radial flow patterns are highly effective for floor scouring and reducing the risk of rag build-up. Additional design features help minimise fouling around the shaft and hub, making these mixers particularly well-suited for anoxic and anaerobic chambers.