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Hias, a leading Norwegian wastewater facility and developer of the HIAS® biological nutrient removal process, approached FloNergia to evaluate FloMov™ engineered airlift pumps for transporting water and plastic biofilm carriers between biological reactors.
The objective was to identify a pumping solution capable of moving media gently without damaging the biofilm while providing reliable, low-maintenance operation. FloNergia worked with the project team by providing technical guidance, hydraulic performance data, and engineering support to evaluate the application for the HIAS® process.
Moving Bed Biofilm Reactor (MBBR) systems rely on plastic carrier media that support biological growth for nutrient removal. Conventional mechanical pumps can damage the carrier media and the attached biofilm through impeller contact and shear forces, potentially reducing treatment efficiency.
The project required a pumping technology capable of:
FloNergia introduced its FloMov™ airlift technology as a gentle pumping solution that transports both water and biofilm carriers using optimized air injection rather than mechanical impellers.
Technical data, performance curves, and engineering recommendations were provided to support the evaluation, along with consultation on integrating FloMov™ into the HIAS® wastewater treatment process. The no-moving-parts design offers an attractive alternative for applications where preserving carrier media and reducing maintenance are critical.
Unlike conventional pumps, FloMov™ uses engineered airlift technology to move water and suspended media without exposing them to rotating mechanical components. This significantly reduces shear forces on biofilm carriers, helping preserve biological activity while simplifying maintenance and improving operational reliability.
Biological treatment performance depends not only on reactor design but also on how carrier media is transported between process stages. FloMov™ was specifically evaluated because its engineered airlift design eliminates mechanical impellers, reducing the potential for media damage while providing efficient hydraulic transport. This makes the technology particularly well suited for MBBR systems where protecting the biological film is essential to maintaining treatment performance.
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