At NINGBO INNO PHARMCHEM CO.,LTD., we are dedicated to developing and promoting innovative environmental solutions. This article explores the cutting edge of nitrogen and phosphorus removal in river wetlands, addressing the growing need for advanced methods to safeguard our aquatic ecosystems. Effective nutrient management is crucial for preventing eutrophication and ensuring the health of rivers and lakes.

Traditional biological treatment methods, while foundational, often struggle to meet increasingly stringent discharge standards for nitrogen and phosphorus. This necessitates the adoption of more advanced technologies, such as membrane bioreactors (MBRs) and specialized denitrification filters. The underlying biological processes, however, remain central. The biological denitrification process involves two key steps: nitrification and denitrification. Nitrification, an aerobic process, converts ammonia to nitrates using nitrifying bacteria. Factors like temperature (optimal 30-35°C), dissolved oxygen (above 2mg/L recommended), pH (7.2-8.0), and alkalinity are critical for this stage. The presence of toxic substances can inhibit the process, and sufficient sludge age is necessary to maintain a healthy population of nitrifying bacteria.

Denitrification, conversely, occurs under anoxic conditions (dissolved oxygen <0.2mg/L) and involves the conversion of nitrates to nitrogen gas. Optimal temperatures for denitrification are typically 35-45°C, with a preferred pH range of 6.5-7.5. A key requirement is the provision of an adequate carbon source to serve as an electron donor for the bacteria. The efficiency of this stage is heavily influenced by the carbon-nitrogen ratio, with a theoretical BOD5 requirement of 2.86g per gram of nitrate nitrogen. Understanding these denitrification process factors is vital for system design and operation.

For effective wastewater treatment, especially in applications like wetland denitrification filling, a holistic approach is needed. Innovative solutions often combine improved process design with specific biological media or enhancements to support microbial activity. The selection of appropriate technologies and careful management of operational parameters, informed by insights into nitrification process factors, are key to achieving desired water quality improvements. NINGBO INNO PHARMCHEM CO.,LTD. is at the forefront of providing such solutions, contributing to healthier aquatic environments through advanced scientific applications.