paddle-wheel flocculators

The slow mixing of MRI’s large paddle wheel accelerates the rate of particle collisions causing the agglomeration of electrolytically destabilized colloidal particles into settle-able sizes. All stainless steel, there is no glass-shard contamination or through-wall seals.

MRI Paddle Wheel Flocculators

Horizontal Paddle Wheel Flocculators
Provide Mid-Range G-Values

MRI’s Paddle Wheel Flocculator provides a unique
advantage: the flexibility to install a number of flocculators
on a single drive.

To read about the advantages of rapid mixing, visit MRI’s Rapid Mixers.

This enables a varied paddle configuration and achieves the use of a
range of G-values, which in turn advances the ability to control
flocculation outcomes.

Due to the recent increase in the use of membrane filtration and the resulting elimination of polymers, controlling flocculation outcomes in the sedimentation process is more important than ever.

Performance Advantages

MRI’s Paddle Wheel Flocculator offers significant advantages, including:

  • Versatile, energy efficient, and consistent floc production in varying water conditions and temperatures
  • All stainless steel construction eliminates the danger of FRP shards entering the flow path and damaging membranes
  • When combined with the Hydraulic Final Stage, varying currents created by the rotation of the paddles are eliminated and the Paddle Wheel Flocculator fits almost any water condition

G-Value Comparison

Key Features Only from MRI’s Paddle Wheel Flocculator

All stainless steel construction, including paddles and chains, provide a reliable, long lasting product, and eliminates FRP shards.

All components, including VFD’s, are provided by MRI for quick, easy availability and minimized downtime.

Underwater bearings are available in non-maintenance poly, and can be greased and packed.

High-quality SEW Eurodrive and Sumitomo gear reducers ensure long-lasting performance.

Controls are custom-designed to meet the specific needs of the water treatment plant.

Horizontal Paddle Wheel Flocculator Applications

Paddle Wheel Detail
Hydraulic final stage eliminates turbulence in the sedimentation basin and improves the settling process

Since all applications are different, a settle-ability test, usually a jar test, is performed to determine the rapid mixing and flocculation parameters that will be most efficient.

If turbidity and temperature are fairly constant, Paddle Wheel Flocculators are adequate. If conditions vary, a larger range of G-values are required, and MRI’s Vertical Turbine Flocculator should be considered.

Hydraulic Final Stage Alleviates Clarifier Turbulence

All flocculation and settling processes have a high mixing zone, the flocculator, and an extremely quiet zone, the sedimentation basin.

MRI’s Hydraulic Final Stage provides a transition channel between the drastically different turbulence of these two areas.

Placing a Hydraulic Final Stage between the flocculator and sedimentation basin has the following advantages:

  • Reduces the final stage of G-values to <10sec-1. This will create the final stage of flocculation.
  • Eliminates flocculator-created currents from entering the sedimentation basin. Flocculator mixers can cause jumps in the sedimentation basin. Eliminating these jumps improves the settling process.
  • Distributes the flow coming out of the flocculators evenly across the sedimentation basin. Where serpentine or over-under flow configurations are used, the flows are distributed evenly, preventing varying velocities in the sedimentation basin
  • Sedimentation that may occur in this area is removed by the scrapers mounted on the Hoseless Cable-Vac™ Sludge Collector.
Paddle wheel and turbine flocculators can be combined for a wider range of G-Values
Paddle wheel and turbine flocculators can be combined for a wider range of G-Values

Explore MRI’s Solution for Your Water or Wastewater Project.

Call us at 303.279.8373 to discuss fine-tuning your wastewater treatment system’s flocculation, Contact Us, or Request More Information.

Find out more:

Download the brochure or request a printed brochure.

See an overview of MRI’s water and wastewater treatment solutions

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