Multiple Barrier Systems

AquaMB Process®

Multiple Barrier Membrane System

The AquaMB Process® is a multiple barrier system that integrates biological treatment and clarification with dual barrier filtration consisting of cloth media and external membrane separation. It is ideal for wastewater plants that require optimum performance and flexibility at the lowest cost of ownership. Compared to multiple unit processes and membrane bioreactor (MBRs), the AquaMB Process offers numerous advantages with the added benefit of single source responsibility

How It Works

AquaMB® Process Diagram

Biological System
Flow enters the bioreactor where a series of independent phases promote biological treatment. Separate mixing and aeration devices allow the contents of the reactor to undergo biomass conditioning and nutrient reduction by alternating aerobic and anoxic periods. Following quiescent settling, supernatant from the reactor is transferred from the first barrier to the cloth media filter.

Cloth Media Filtration
Inlet water passes through the cloth media or second barrier. Filtered water is collected in the center tube where it is directed to a supply channel that feeds the external microfiltration membrane system.

The membrane system is the final barrier of the AquaMB Process®. Feed flow enters the membrane module where low positive pressure enables the fluid to permeate the membrane, excluding fine particulates down to 0.02 microns in size. Filtrate from the membranes is directed to final discharge or reuse application.

Aqua MultiBore® P-Series Polymeric Membranes
  • Periodic chemical cleaning removes organics and mineral deposits.
  • Fully automated with manual option.
  • In-situ cleaning; removal of membranes not required.
  • Membranes are compatible with a variety of cleaning chemicals.

Features & Specifications

  • Advanced biological nutrient removal
    • Separation of aeration and mixing
    • Quiescent settling
  • Dual barrier filtration
    • 10 or 5 micron Cloth Media Filter
    • 0.02 micron ultrafiltration
  • External membranes
    • Automatic in-place cleaning and integrity testing
    • Easy Access
    • Fewer membranes compared to traditional multi-unit processes
  • Flexible design and operation
  • Alternate discharge points
  • Ease of operation
  • Fine screening of MLSS not required


  • Advanced biological nutrient removal
  • Dual barrier filtration
  • External membranes
  • Flexible design and operation
  • No air scouring required
  • Fewer membranes and chemicals required
  • Alternate discharge points
  • High quality effluent
  • Bacteria and virus removal
  • Lowest cost of ownership

Plant Photos


Related Resources

Resource CategoriesTitleSummaryDownload Link
ArticleAchieving Reuse Quality Water Using Multiple-Barrier TreatmentThe incorporation of nitrogen and phosphorus removal to the treatment scheme broadens the opportunities where reclaimed water can …


White PaperAlternative to Membrane Bioreactor to Achieve High Effluent QualityApplication of progressive staged filtration following the biological system.


VideoAqua-Aerobic Systems, Inc. Overview Video


BrochureAquaMB Process® Brochure


ArticleSt. Helens, AustraliaOn the island of Tasmania off Australia’s southeast coast, the AquaMB Process® from Aqua-Aerobic Systems Inc. …


White PaperUltrafiltration for Reuse of Industrial WastewaterThis paper details a pilot study treating high-salinity secondary effluent from the production of specialty chemical …


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