TETRA® Filters

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 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 tertiary 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.


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