A Denitrification Filter is a biological filtration system designed to remove nitrate (NO₃⁻) from treated wastewater through an anoxic denitrification process. Using specialized media and carbon sources, it promotes the growth of denitrifying bacteria that convert nitrates into harmless nitrogen gas. Ideal for municipal and industrial wastewater treatment, the Denitrification Filter ensures compliance with nitrogen discharge standards while maintaining stable, low-maintenance operation.
Advanced deep-bed filter combining denitrification and filtration for efficient TN, SS, and TP removal with low energy and maintenance costs.
Combines biological denitrification and solid removal in one compact system.
Achieves low TN, SS, and TP levels to meet advanced discharge standards.
Easily switches between denitrification and filtration modes as needed.
Unique nitrogen-drive and submerged inlet design minimize power and carbon use.
PLC control and automatic monitoring ensure consistent effluent quality.
Non-clogging filter bricks and durable materials provide long-term, trouble-free operation.
Weilan designs plans and drawings and supplies both standardized and bespoke water treatment systems, backed by over 200 completed projects.
The denitrification deep-bed filter is mainly used for upgrading the standard of sewage treatment plant, from Grade B to Grade A standard.
The denitrification deep-bed filter is a treatment unit that combines biological denitrification and filtration functions into one, and is a unique advanced treatment process with simultaneous denitrification and filtration.
The denitrification deep-bed filter adopts quartz sand of special specifications and shapes as the medium for denitrifying organisms. At the same time, the deep bed is also an excellent removal structure for nitrate nitrogen (NO3-N) and SS.
During filtration, nitrate nitrogen The action of the microbial membrane is converted to nitrogen gas discharge, and the continuous trapping of suspended matter will increase the head loss, so backwashing is required to remove the trapped solid matter. Finally, a structure has the functions of nitrogen removal, phosphorus removal and suspended matter removal.
Finally, a structure has the functions of nitrogen removal, phosphorus removal and suspended matter removal.
Henan Weilan Water Treatment Technology Co., Ltd. (est. 2011) specializes in turnkey package
water treatment plants — modular, skid- and containerized systems pre-tested for rapid
on-site deployment.
Backed by an experienced R\&D and EPC team and ISO9001 quality management, Weilan
delivers engineered design, manufacturing, commissioning and lifecycle support for
municipal and industrial water projects.
Provide a total solution for safe drinking water and sewage treatment.
Full design services — standard modules and bespoke systems
The selection depends on flow capacity, influent quality, and effluent requirements. Weilan Water Treatment provides customized design solutions, including filter dimensions, media specifications, and carbon dosing systems, ensuring that each unit meets the client’s process and performance needs precisely.
Yes. The Denitrification Filter can be easily integrated into existing treatment systems to upgrade effluent standards from Grade B to Grade A. Its flexible design allows for seamless connection with existing pipelines and control systems without extensive civil modifications.
Depending on influent nitrogen levels, a carbon source such as methanol or acetate may be dosed to support biological denitrification. Weilan’s systems include automatic dosing and monitoring controls to ensure efficient carbon usage and consistent nitrogen removal.
Denitrification Filters are widely used in municipal sewage treatment plants, industrial wastewater facilities, and reclaimed water systems. They are ideal for projects requiring high-efficiency nitrogen and phosphorus removal to meet stringent environmental regulations.
