Suboxic Nutrient Removal Workshop and Survey Analysis: Sharing Insights from Successful Installations

The objective of this project is to develop design criteria and operational guidance for the implementation of biological nutrient removal processes under low-dissolved oxygen (low-DO) conditions, also known as suboxic nutrient removal (SNR). This guidance will be developed based on a comprehensive analysis of raw operational data from a national survey of low-DO facilities. Represented in this dataset are a variety of process configurations, control schemes, and discharge limits, allowing for an understanding of multiple ways for SNR to be successfully achieved.

The findings will be presented and discussed at a workshop where representatives from utilities, consultants, and vendors can develop best practices for low-DO design, implementation, and operations. Adoption of SNR has the potential to greatly improve energy efficiency and nutrient limits compliance at water resource reclamation facilities (WRRFs).