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TETRA - Wastewater Filters System
One of the most trusted names in wastewater filters. Wastewater Filter Underdrains: De Nora Water Technologies offers the DE NORA TETRA T Block and TETRA SNAP T underdrain filter blocks for wastewater applications. The TETRA SNAP T underdrain filter block features a revolutionary design incorporating interlocking blocks that promotes additional robustness to the well proven DE NORA TETRA T Block design.
An underdrain system is required to support filter media and to separate the filter media from the bottom of the filter. In addition to providing support for the filter media, the underdrain system serves two primary purposes: to allow filtered water to pass through to the collection system and to start the distribution of backwash water and backwash air across the filter.
