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PreprintCC BYChemRxiv

Treatment Pluralism in Full-Scale UV LED Wastewater Disinfection Showcasing Flexible Flow and Energy Control with Predictable Performance

  • Bailey Reid1,2
  • Sean A. MacIsaac1,2
  • Sarah Organ1,2
  • Carolina Ontiveros1,2
  • Graham A. Gagnon1,2
  • Amina K. Stoddart1,2
  1. 1Department of Civil & Resource Engineering
  2. 2Dalhousie University
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Abstract

Wastewater treatment facilities (WWTFs) are currently facing multitudes of challenges including incline in population, climate change driven challenges and stringent regulation limits. Ultraviolet light emitting diodes (UV LEDs) are becoming an attractive disinfection system that has demonstrated powerful inactivation capabilities with modular system design, becoming a useful alternative treatment to conventional UV systems. A UVLED full-scale reactor was assessed for real municipal wastewater at the highest reported flow rates with a max flowrate of 2,725 m3 day-1. The reactor showed results ranging between 0.68 and 3 log reduction values for E. coli inactivation across the various high flowrates tested. The results accumulated throughout the study periods was further used to characterize the true capacity of the full-scale UV LED flow through reactor and demonstrated prediction capabilities through a sampling methodology. Furthermore, statistical analysis conducted between the two full-scale systems at the study site predicted probabilities of 66.5 and 25.6% of the UV LED system and conventional UV system for achieving 3 LRVs based on the data available throughout the study. Overall, the results provided by this study and the previous study by MacIsaac et al. (2024) demonstrated the performance and pluralist treatment variability of UV LED systems for wastewater treatment.

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Cite

BibTeXRIS
BibTeX
@misc{reid2026treatment,
  title = {{Treatment Pluralism in Full-Scale UV LED Wastewater Disinfection Showcasing Flexible Flow and Energy Control with Predictable Performance}},
  author = {Bailey Reid and Sean A. MacIsaac and Sarah Organ and Carolina Ontiveros and Graham A. Gagnon and Amina K. Stoddart},
  howpublished = {ChemRxiv},
  year = {2026},
  month = aug,
  doi = {10.26434/chemrxiv.15008066/v1},
  url = {https://chemrxiv.org/doi/full/10.26434/chemrxiv.15008066/v1},
  note = {CC BY},
}
RIS
TY  - UNPB
TI  - Treatment Pluralism in Full-Scale UV LED Wastewater Disinfection Showcasing Flexible Flow and Energy Control with Predictable Performance
AU  - Bailey Reid
AU  - Sean A. MacIsaac
AU  - Sarah Organ
AU  - Carolina Ontiveros
AU  - Graham A. Gagnon
AU  - Amina K. Stoddart
PY  - 2026
DA  - 2026/08/31
PB  - ChemRxiv
DO  - 10.26434/chemrxiv.15008066/v1
UR  - https://chemrxiv.org/doi/full/10.26434/chemrxiv.15008066/v1
AB  - Wastewater treatment facilities (WWTFs) are currently facing multitudes of challenges including incline in population, climate change driven challenges and stringent regulation limits. Ultraviolet light emitting diodes (UV LEDs) are becoming an attractive disinfection system that has demonstrated powerful inactivation capabilities with modular system design, becoming a useful alternative treatment to conventional UV systems. A UVLED full-scale reactor was assessed for real municipal wastewater at the highest reported flow rates with a max flowrate of 2,725 m3 day-1. The reactor showed results ranging between 0.68 and 3 log reduction values for E. coli inactivation across the various high flowrates tested. The results accumulated throughout the study periods was further used to characterize the true capacity of the full-scale UV LED flow through reactor and demonstrated prediction capabilities through a sampling methodology. Furthermore, statistical analysis conducted between the two full-scale systems at the study site predicted probabilities of 66.5 and 25.6% of the UV LED system and conventional UV system for achieving 3 LRVs based on the data available throughout the study. Overall, the results provided by this study and the previous study by MacIsaac et al. (2024) demonstrated the performance and pluralist treatment variability of UV LED systems for wastewater treatment.
ER  -