Microvi MNE™

Microvi MNE Overview

Looking for a low-cost, high-performance solution for your water and wastewater problems?

For the past 150 years, biological processes have been widely used for treatment of a variety of organic and inorganic contaminants in water and wastewater. However, conventional biological solutions are all based on the same fundamental principle – growing, managing, and wasting a mixed population of microorganisms. What if there was a biological treatment that instead eliminated the biological waste stream, eliminated unneeded microorganisms, reduced energy and chemical consumption, and required a smaller footprint and much less operator attention to manage?

Watch the overview video to learn more.

Microvi MNE™ introduces a new paradigm.

The Microvi MNE solution will change how you approach biological treatment. This new solution uses novel biocatalyst composites that intensify biological processes. The biocatalysts are pre-populated with process-specific cultures of naturally-occurring microorganisms at high densities that are retained within polymer composites. The microorganisms remain within the biocatalyst at a steady population without adding suspended solids to the treated water.

In operation, the biocatalysts are retained within a single-pass reactor which eliminates the need for replacement, recycling, or re-seeding of active microorganisms.

Microvi MNE is a Breakthrough Alternative to Conventional Biological Treatment

Microvi alternative to conventional biological treatment

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Microvi MNE Biocatalyst

The robust Microvi MNE system uses specially-targeted, high performance natural microorganisms that are completely incorporated within Microvi MNE polymeric composites, called biocatalysts.

Biocatalyst: Understanding the Process
What is a biocatalyst?

Polymeric Composite

  • • Irreversibly retains microorganisms
  • • Ideal microenvironment for specific microorganism population
  • • Designed for rapid mass transfer of specific contaminants and products


  • • High density of specialized, natural, and safe microorganisms
  • • Ideal microenvironment for specific microorganism population
What does it do?

Two Applications

The biocatalyst converts many types of target contaminants (e.g. BOD, COD, phosphate, ammonia, and others) into harmless byproducts

How does it work?

Cell-to-Cell Communication

  • • Cells communicate with each other to coordinate how they function and behave as a community (using mechanisms such as quorum sensing)
  • • Result: Stable cell population, resistance to toxicity

Stable Population

  • • Organisms “consume” dead cells (with mechanisms such as cryptic growth)
  • • Result: No net production of biosolids

Implementation of Microvi MNE Yields Results

  • Low Operating Cost: Significantly less energy and chemical requirements; no reactor backwashing
  • Near Zero Biosolids Production: Biocatalysts completely retain the microorganism population, suppressing net growth, and therefore contribute NO biosolids to the bulk liquid. The organisms regulate their own population within the biocatalyst structure, eliminating or significantly reducing the requirement for biosolids management
  • No Concentrated Waste Stream: NO excess biosolids, NO brine stream, NO reject stream
  • Significantly Reduced Chemical Consumption: Less chemicals are required because of the limited reproduction of biosolids
  • Quick Start-Up Time: Great for both continuous and intermittent use
  • Very High Water Recovery Rates: Less water is lost or needs costly recovery processing
  • Robust and Resilient: When the biocatalysts are subjected to upset conditions or dramatic variations in influent quality, their performance is nearly unchanged. The biocatalyst solution is simple and less complex with fewer moving parts (e.g. complex system of valves, compressors, etc.)
  • Minimal Operator Input: A simple reactor with minimal internal components, straightforward control, and no complex backwashing or regeneration reduces operator input and maintenance requirements
  • Smaller Footprint: Treatment rates of just minutes mean smaller tanks; the high organism density metabolizes pollutants more efficiently; short treatment times help reduce footprint and allow for modular/standard systems
  • Extensive Life Span: While microorganisms are irreversibly retained within the biocatalyst, the biocatalysts are then kept within the bioreactor using a combination of a settling zone and retaining screen. Biocatalyst replacement is not required for years after start-up


  • Tertiary polishing systems
  • New treatment plants
  • Retrofit existing plants
  • Side stream plants
  • Industrial treatment


  • Nitrate
  • Ammonia
  • BOD
  • Phosphorous
  • 1,2,3 TCP
  • Perchlorate

For information about other applications and contaminants removed, submit your questions through the Contact Us form on this website.


Two Companies, One Great Solution

A partnership between WesTech Engineering, a seasoned industry leader in water and wastewater solutions, and Microvi, a cutting-edge green technology company, provides Microvi MNE as a treatment solution.

WesTech offers the experience of upstream and downstream technologies, process control, and customized integration of the Microvi MNE solution.

Microvi offers over a decade of research, development, and materials science.

Learn more about the Microvi-WesTech alliance.