DE NORA TETRA® biofilters can be designed in a variety of configurations to achieve optimal treatment for biological oxidation of organic compounds, nitrification, and denitrification. The De Nora flagship biofilter with over 300 installations is DE NORA TETRA® Denite® system, which biologically reduces soluble nitrates to nitrogen gas in an anoxic environment. In addition to nitrogen removal, DE NORA TETRA® Denite® solution often employs physical/chemical processes to enhance performance by also removing phosphorus and solids in a single-stage process. Media selection is influenced by a DE NORA TETRA® DeepBedTM filtration concept that is especially advantageous for biological applications where reaction time, solids holding capacity, and biomass inventory control are critical to performance.
DE NORA TETRA® ColOXTM, SAFTM, and NSAFTM are aerobic biofilters used for BOD/COD oxidation and nitrification.
Biological Filtration
The robust nature of DE NORA TETRA® filters creates an ideal environment for simultaneous biological and physical/chemical treatment. De Nora has over 50 years of experience removing nutrients, organic compounds, and solids in teriary fixed-film biological filters. Common applications include polishing municipal wastewater effluent to reuse standards and/or regulatory discharge limits. Potable applications combine De Nora ozone and biological filtration technologies to oxidize micropollutants and to mitigate disinfection byproduct formation.
DE NORA TETRA®
Easy to Operate and Maintain
Cost Saving
Reliability / Equipment Longevity
Regulatory Compliance
Small Footprint / Compact Design
Why DE NORA TETRA®?
- History of proven performance
- Excellent distribution of backwash air and water keeps filter media clean
- High loading capacity and superior performance at peak loads
- No small openings, nozzles, screens or moving parts to clog or wear
- Low dirty backwash water return volume; longer filter run times
- Easy to upgrade existing De Nora media filters to biologically active mode
- Can accommodate wide range of media types and sizes
Want to know more about our DE NORA TETRA® Biological Filtration Solutions?
Applications
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.jpg "Modular DeepBed Filter")
Discover More
- DE NORA TETRA Denite Brochure ( pdf 508 kb )
- DE NORA TETRA Modular DeepBed Filter brochure ( pdf 2 mb )
- DE NORA TETRA Amoeba Filter Brochure ( pdf 2 mb )
- DE NORA TETRA DeepBed Filter Brochure ( pdf 2 mb )
- DE NORA TETRA DeepBed Filter Brochure (UK ONLY) ( pdf 3 mb )
- DE NORA TETRA SNAP-T Brochure ( pdf 2 mb )
- ColOX brochure ( pdf 5 mb )
- DE NORA TETRA SAF/NSAF Brochure ( pdf 713 kb )
- DE NORA TETRA SAF/NSAF (EUROPEAN Brochure) ( pdf 4 mb )