Denitrification Filter

Equipment Overview: Denitrification deep-bed filter technology is mainly used for upgrading and retrofitting municipal wastewater treatment plants. It integrates multiple functions including physical interception of Suspended Solids (SS), chemical micro-flocculation for Total Phosphorus (TP) removal, and biological Denitrification for Total Nitrogen (TN) removal. It features multiple functions in one tank, centralized functions, flexible operation, advanced technology, strong impact resistance, and maintenance-free for life. It is mainly suitable for upgrading and retrofitting wastewater treatment plants, new construction, and Reclaimed Water Reuse projects. Equipment Composition: A. Filter tank core equipment — filter media: The filter media of the denitrification deep-bed filter serves a dual role as both filtration medium and biological carrier. The filter media uses high-quality biological ceramsite, with strict requirements on indicators such as hardness, particle size, sphericity, specific gravity, acid solubility, and uniformity coefficient. B. Air-water distribution system — filter bricks: The core equipment filter bricks are imported or domestically produced high-quality equipment, made of HDPE material, featuring uniform air distribution, high compressive strength, and corrosion resistance. C. Backwash equipment: The backwash equipment consists of backwash water pumps and backwash blowers, adopting a backwash mode of air wash — combined air-water wash — water wash, with uniform backwashing and good filter regeneration capacity. D. Automatic control valves: Pneumatic and electric valves are automatically controlled by PLC, requiring no on-site operation and enabling unattended operation. E. Instruments: Mainly composed of flow meters, level gauges, DO meters, NO3 meters, etc., providing comprehensive and precise signals for PLC to achieve automatic control. F. Chemical dosing system: Used for chemical phosphorus removal reagent dosing and carbon source dosing during Denitrification for nitrogen removal. G. Filter tank main control cabinet: PLC programmable controller, human-machine dialogue multi-interface display screen, capable of providing central control system output. It includes a carbon source precision dosing control system, nitrogen stripping system, backwash system, influent flow control system, etc.