BIOLOGICAL NUTRIENT REMOVAL
Advanced Nitrogen & Phosphorus Removal for Stringent Discharge Limits
Built for
Nutrient-Sensitive Applications
Biological Nutrient Removal (BNR) is an advanced biological treatment process designed to remove Nitrogen and Phosphorus from wastewater to meet stringent environmental discharge and reuse standards.
Renewsys engineers BNR systems using aerobic, anoxic, and anaerobic zones arranged in a controlled process sequence to enable nitrification, denitrification, and biological phosphorus removal—without excessive chemical dosing.
Applied as a secondary or tertiary treatment stage, Renewsys BNR solutions deliver stable nutrient removal even under fluctuating hydraulic and organic loads. With precise process control, optimized oxygen transfer, and automation, our systems ensure regulatory compliance, operational efficiency, and long-term process stability for both municipal and industrial applications.
Total Nitrogen Removal
Ammonia (NH₄–N) Removal
Total Phosphorus Removal
Lower Chemical Consumption
Process Uptime
Aeration Energy Savings
Process Capabilities
Engineered Anoxic–Oxic Treatment Zones
Strategically designed anoxic (oxygen-limited) and oxic (aerated) tanks enable efficient nitrogen conversion while minimizing energy consumption and external carbon demand.
Nitrification & Denitrification Processes
Ammonia is biologically oxidized to nitrate (nitrification) in aerobic zones and subsequently reduced to harmless nitrogen gas (denitrification) in anoxic zones—removing nitrogen from the wastewater stream.
Biological Phosphorus Removal
Utilizes phosphorus-accumulating organisms in anaerobic–aerobic conditions to biologically remove phosphorus, reducing reliance on chemical precipitation.
Key Benefits
Compliance with Stringent Nutrient Limits
Designed to meet tight nitrogen and phosphorus discharge norms for sensitive receiving waters and reuse applications.
Lower Chemical & Energy Dependency
Optimized biological pathways reduce the need for chemicals while improving aeration efficiency and operating costs.
Process Stability Under Variable Loads
Robust design ensures consistent performance despite fluctuations in influent flow, organic load, or nutrient concentration.
Industries Served
Municipal
Advanced nutrient removal to protect rivers, lakes, and coastal waters from eutrophication.
Real Estate
Compact, automated BNR systems for centralized sewage treatment and water reuse compliance.
Palm Oil Mills
Secondary nutrient removal after anaerobic treatment of POME to meet discharge standards.
Industrial Parks
Centralized treatment of mixed industrial effluents with controlled nutrient discharge requirements.
FAQs
Answers to common technical and operational queries on Renewsys’ Biological Nutrient Removal Solutions.
Renewsys engineers BNR systems by optimizing aerobic, anoxic, and anaerobic zones based on influent characteristics and required nitrogen and phosphorus limits, ensuring stable and compliant performance.
Yes. By prioritizing biological nitrification, denitrification, and phosphorus uptake, Renewsys minimizes chemical dosing and optimizes aeration control to reduce overall energy demand.
Renewsys BNR solutions are designed for both new plants and retrofits, and can be seamlessly integrated with Activated Sludge, MBR, or tertiary treatment systems with minimal disruption.
Optimize Nutrient Removal Performance
Creating a Greener Tomorrow Through Sustainable Environmental Services