SALHER - Model IMH-LBR-TC -WWTP by Biological Filter
The WWTP by biological filter or trickling filter IMH-LBR-TC is a GFRP equipment with orthophthalic resins for removal of 85 – 90% organic matter (BOD5) and 90% suspended solids (SS).
These sewage treatment plants include a primary treatment through settling – digestion (Imhoff tank) and a secondary treatment through recirculated biological filter with feed through a mobile distributor (rotating arm), lower part evacuation system and natural ventilation. The filling material is plastic with a high hollows ratio (95%) and a high specific surface area (140 m²/m³). The pumping station to the biological filter incorporates a pump with level regulation system.
Additionally, this treatment plant includes a truncated cone shape secondary settling tank with central feed and Thompson perimeter canal, a sludge extraction system to the digestion chamber of the Imhoff tank consisting of a submersible pump with extraction system through auto-coupling and a recirculation system of part or total of the treated water to increase the system performance.