WASTEWATER FILTER UNDERDRAINS
De Nora Water technologies offers the 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 TETRA T Block™ design. The TETRA™ underdrain filter blocks support the filter media and the pressure loss bearing placed on the media. Their proven designs provide superior distribution for both water and air, separately or concurrently. Their design also ensures that the filter media does not clog the underdrain.
TETRA™ DeepBed Filters
The TETRA™ DeepBed tertiary gravity filtration system from De Nora Water Technologies is an economical solution for the removal of total suspended solids (TSS). DeepBed filters also provide superior total phosphorus (TP) removal to meet stringent limits below 0.2 mg/l. In addition to TSS removal, TETRA™ DeepBed and Pressure Filters are frequently specified to reduce BOD levels; achieve metal consents associated with chemical dosing for phosphate removal; improve effluent clarity for UV disinfection; and offer additional protection for works at risk of consent failure.
De Nora Water Technologies offers the TETRA™ Denite® system that combines the denitrification and filtration process for the removal of nitrate-nitrogen (NO3-N) and suspended solids (SS) in a single treatment step. Denite is a fixed-film biological denitrification process that also serves as a deep bed filtration system capable of removing suspended solids to virtually any final effluent requirement. The system integrates well with other plant treatment processes to provide superior total nitrogen (TN) below 3 mg/l and phosphorous removal.
TETRA™ Modular DeepBed Filters
The TETRA™ Modular DeepBed Filter (MDBF) is a skid-mounted filtration system designed after the TETRA™ DeepBed technology to be a competitive tertiary filtration plant for secondary effluent from smaller sized wastewater treatment facilities. Consisting of a number of stainless steel filter cells (normally 6, 8, 10 or 12), backwash water pumps, backwash blowers, pipework and control panel, the unit is fully assembled and tested to ensure simple and quick installation and setting to work.