Downflow Dentrification

The DENIFOR Downflow Denitrification and Filtration System for the treatment of secondary effluent uses high-surface-area media to support a larger microbial population density in the same volume, allowing higher Nitrate-N removal rates in a smaller footprint.

Based on the established BioFOR technology, the system provides biological denitrification and suspended solids removal in a single step. The process involves allowing secondary effluent to flow by gravity through a bed of the high-surface-area media Biolite*, which has a large biological population in the same volume which produces an effluent that meets the highest level of technological standards.

The Biolite* advantage helps reduce capital expenditure and provides an excellent alternative for WWTPs with site constraints due to its much lower footprint requirement.

The downflow nature of the system provides excellent suspended solids capture in addition to the high Nitrate-N removal rates.

Options are available for shallow-filter beds, which provides the opportunity to retrofit existing tertiary filtration systems and also helps reduce the size of backwash pumps, as compared to deep-bed filters, thereby reducing operating costs.