DE NORA TETRA^® Biological Filtration

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^® DeepBed^TM 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^® ColOX^TM, SAF^TM, and NSAF^TM are aerobic biofilters used for BOD/COD oxidation and nitrification.