Biological Nutrient Removal Survey (5087)

Jan 18, 2022

Sensor-based control systems for biological treatment and nutrient removal are becoming more common, but challenges to effective deployment, including accuracy, reliability, O&M requirements, and cost-effectiveness still exist. WRF’s ongoing project, Implementation of Innovative Biological Nutrient Removal (BNR) Processes through Improvement of Control Systems and Online Analytical Measurement Reliability and Accuracy, will build a set of tools to help practitioners evaluate these systems. The tools will be based on experiences of water resource recovery facilities (WRRFs) across North America, and we are asking for feedback via an electronic survey.

To provide data for a single WRRF – please use this link:
This survey option allows you to save your progress and complete the survey over multiple sessions.

If you plan to respond for multiple facilities – please use this link:
This survey option must be completed in one session (if you don’t hit “Submit” before you close the survey, your information will not be saved). 

We encourage you to preview the survey questions (download the PDF below) and gather relevant information from each of your facilities before you start the survey. Please respond to the survey by February 4, 2022.

We are seeking broad representation, so even if you are not yet running a nutrient removal process but have sensors in your biological process, sharing your experiences with the on-line instruments and related controls you do have will be valuable.   

Once submitted, if you have any information that you’d like to change, please contact Jacob Fortin, Woodard & Curran, at

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