Nitrosamines in pilot-scale and full-scale wastewater treatment plants with ozonation

Gerrity, Daniel, Pisarenko, Aleksey N., Marti, Erica, Trenholm, Rebecca A., Gerringer, Fred, Reungoat, Julien and Dickenson, Eric (2014) Nitrosamines in pilot-scale and full-scale wastewater treatment plants with ozonation. Water Research, 72 251-261. doi:10.1016/j.watres.2014.06.025

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Author Gerrity, Daniel
Pisarenko, Aleksey N.
Marti, Erica
Trenholm, Rebecca A.
Gerringer, Fred
Reungoat, Julien
Dickenson, Eric
Title Nitrosamines in pilot-scale and full-scale wastewater treatment plants with ozonation
Journal name Water Research   Check publisher's open access policy
ISSN 0043-1354
Publication date 2014-07-07
Year available 2014
Sub-type Article (original research)
DOI 10.1016/j.watres.2014.06.025
Open Access Status File (Author Post-print)
Volume 72
Start page 251
End page 261
Total pages 11
Place of publication London, United Kingdom
Publisher I W A Publishing
Language eng
Abstract Ozone-based treatment trains offer a sustainable option for potable reuse applications, but nitrosamine formation during ozonation poses a challenge for municipalities seeking to avoid reverse osmosis and high-dose ultraviolet (UV) irradiation. Six nitrosamines were monitored in full-scale and pilot-scale wastewater treatment trains. The primary focus was on eight treatment trains employing ozonation of secondary or tertiary wastewater effluents, but two treatment trains with chlorination or UV disinfection of tertiary wastewater effluent and another with full advanced treatment (i.e., reverse osmosis and advanced oxidation) were also included for comparison. N-nitrosodimethylamine (NDMA) and N-nitrosomorpholine (NMOR) were the most prevalent nitrosamines in untreated (up to 89ng/L and 67ng/L, respectively) and treated wastewater. N-nitrosomethylethylamine (NMEA) and N-nitrosodiethylamine (NDEA) were detected at one facility each, while N-nitrosodipropylamine (NDPrA) and N-nitrosodibutylamine (NDBA) were less than their method reporting limits (MRLs) in all samples. Ozone-induced NDMA formation ranging from <10 to 143ng/L was observed at all but one site, but the reasons for the variation in formation remain unclear. Activated sludge, biological activated carbon (BAC), and UV photolysis were effective for NDMA mitigation. NMOR was also removed with activated sludge but did not form during ozonation.
Keyword Wastewater
N-nitrosodimethylamine (NDMA)
Potable reuse
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Available online ahead of print 7 July 2014.

Document type: Journal Article
Sub-type: Article (original research)
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Advanced Water Management Centre Publications
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