| Issue |
MATEC Web Conf.
Volume 280, 2019
The 5th International Conference on Sustainable Built Environment (ICSBE 2018)
|
|
|---|---|---|
| Article Number | 05014 | |
| Number of page(s) | 7 | |
| Section | Sustainable Resource Management | |
| DOI | https://doi.org/10.1051/matecconf/201928005014 | |
| Published online | 08 May 2019 | |
The Case for LED-UVC as a Primary Disinfectant for Small Sustainable Drinking Water Systems
1 Department of Geosciences, University of Rhode Island, Rhode Island, United States
2 Department of Civil and Environmental Engineering, University of Rhode Island, Rhode Island, United States
3 Canopus Water Technologies, Windham, New Hampshire, United States
* Corresponding author: hhadjeres@my.uri.edu
High loads of natural organic matter (NOM) in source water increase levels of toxic byproducts during disinfection, including trihalomethanes (THMs) which are formed when NOM is chlorinated. This study explores the efficacy of using UVC-LED as a primary disinfectant, with lower concentrations of chlorine used as a secondary disinfectant. Both treatment trains with conventional chlorination and UV irradiation with low chlorination reduced total coliforms and E. Coli counts to less than 1 Cfu/100 ml. UV with low chlorination produced approximately 4.6 times less THMs compared to conventional chlorination.
© The Authors, published by EDP Sciences, 2019
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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