Systems and processes for early detection of biological ammonia oxidation in water using fluorometry
Document Type
Patent
Publication Date
2-22-2022
Abstract
This invention relates generally to a system and process for early detection of biological ammonia oxidation in water utilizing a fluorescence-based sensor and process. Various embodiments are configured to read increases in a fluorescence excitation-emission wavelength pair that is responsive to a period of time (days to weeks or even longer) prior to the onset of biological ammonia oxidation, which is considered to be a nitrification event. Fluorescence excitation/emission pairs that have proven to be reliable include a fluorescence excitation wavelength of about 230 nm and an emission wavelength of about 345 nm and an excitation wavelength of 325 and an emission wavelength of 470. The system and process enable drinking water utilities to improve management of its distribution systems and facilitate earlier corrective actions, resulting is less loss of treated water through flushing and other tangible benefits.
Department
Civil Engineering
Patent Number
US11255783
Application Number
US 20200072750 A1
Application Published
3-5-2020
Application Filed
8-30-2019
Assignee
Board of Trustees of the University of Arkansas (Little Rock, AR); United States of America, as Represented by the Administrator of U.S. Environmental Protection (Washington, DC)
Citation
Fairey, J., Do, T. D., Pifer, A., & Wahman, D. G. (2022). Systems and processes for early detection of biological ammonia oxidation in water using fluorometry. Patents Granted. Retrieved from https://scholarworks.uark.edu/pat/435
Comments
Julian Fairey, Department of Civil Engineering, University of Arkansas, Fayetteville, AR
Thien Duc Do, Department of Civil Engineering, University of Arkansas, Fayetteville, AR
Ashley Pifer, Department of Civil Engineering, University of Arkansas, Fayetteville, AR
David G. Wahman, Department of Civil Engineering, University of Arkansas, Fayetteville, AR