DE NORA TETRA® ABF Advanced Biological Filter

The DE NORA TETRA® ABF bioactive filter combines ozone generation with biologically active filtration for use in municipal water applications. The process targets micropollutant reduction and reduces disinfection byproducts in drinking water and potable reuse applications.

Advanced Process Engineering

Enhanced Treatment

Emerging Contaminant Removal

Lower Costs

Why Choose DE NORA TETRA ABF Systems?

Why Choose DE NORA TETRA ABF Systems?

Reduced ozone equipment cost: Combining ozone with a biological filter reduces the required ozone generation capacity, which means a smaller, less costly ozone generation system.

Reduced energy consumption: Because smaller ozone systems are needed, it means that you need less power to run your requirement.

Process does not require upstream RO or UF membranes: For indirect and direct potable reuse, the DE NORA TETRA ABF filter does not require expensive to own and operate membrane technology to achieve water reuse standards.

Disinfection Byproduct Reduction: The BAF biologically oxidizes commonly produced disinfection byproducts associated with ozone usage such as bromate, aldehydes and NDMA. It also provides a biologically stable effluent by oxidizing Assimilable Organic Carbon (AOC’s) generated by ozonation. Biologically stable effluent lowers the risk of undesirable downstream biofilm growth in the filter.

Indirect/direct Water Reuse: DE NORA TETRA ABF process versus conventional membrane-based process such as the Full Advanced Treatment (FAT) using Microfiltration/Ultrafiltration + Reverse Osmosis + Advanced Oxidation Process.

DE NORA TETRA ABF Active Biological Succes Story: A municipality in North America

ABF TETRA case study graph

The DE NORA TETRA ABF bioactive filter using the Ozone BAF Process was installed in a municipality in North America, and achieved outstanding results:

  • O3-BAF effluent avg 47% > TTHM removal than current plant performance - exceeds pilot objective of > 25% 
  • Pilot control anthracite had 2.2 times higher effluent TTHM than O3-BAF 

Learn more about the Advanced Biological Filter System

Learn more about the DE NORA TETRA ABF or other De Nora solutions