Tube Settlers and Support Systems


Microfloc Tube Settlers provide high rate, static and cost-effective process solutions for simple sedimentation mode and solids contact clarification plant.

Settlers arrange upflow through inclined segregated honeycomb tubes. 

Settlement of particles is "with the flow" rather than against the flow, minimising hindered settlement of particles.


  • demonstrated UV protection and durability under harsh environmental conditions
  • reduced plant footprint
  • interposing resistance to upflow; improved flow distribution uniformity
  • increased projected settling area and improved flow distribution uniformity yields up-flow rates many times those found with simple sedimentation mode and solids contact clarifiers without Settlers
  • process stability
  • resistance to the effects of diurnal raw water temperature variations
  • more uniform clarifier surface area utilization promotes well defined, denser sludge zones
  • denser sludge facilitates sludge zone detection and automated extraction management
  • underflow losses reduced by up to 66%
  • 80mm hexagonal tube shape provide better tube drainage (algae and flocs)
    • better drainage reduces blockage cleaning
    • less tube blockages increase effective settlement rates
  • in-tube contact flocculation
  • settler support structure, design, sludge management, collection launders and hydraulic application engineering services

Materials and physical details

Microfloc Settlers are extruded, vacuum formed, trimmed and assembled in Australia

specific gravity 1.03
material virgin food grade acrylonitrile butadiene styrene (ABS)
colour black
formation method vacuum formed
UV protection carbon black and UV stabiliser
vertical heights available (mm) 670 and 1450  - Other heights by request
module length (mm) 1,000
module width (mm) 480 standard, variable in +/- 80 mm increments
tube incline 60 degrees from horizontal
tube form and aperture (mm) hexagonal,  80
sheet joining method reinforcing edge clips/solvent welding
670 mm high x 1000 mm long x 480 mm wide standard Tube Settler module

Application Engineering and Settler support systems

Project specific system design:

  • extensive experience with process, hydraulic distribution and support systems design
  • automation of underflow sludge management
  • materials selection
  • construction methodology and implementation