First report of components responsible for odor sensation from a vertical flow constructed wetland treating combined sewer overflow

Ismael L. Vera-Puerto; Shrabana Sarkar; Gianfranco Moris; Hugo Valdés; Marco Quiroz; Juan López; Francisco Encina; Pascal Molle; Carlos A. Arias

doi:10.1039/d4ew00303a

First report of components responsible for odor sensation from a vertical flow constructed wetland treating combined sewer overflow

Ismael L. Vera-Puerto^*, Shrabana Sarkar, Gianfranco Moris, Hugo Valdés, Marco Quiroz, Juan López, Francisco Encina, Pascal Molle, Carlos A. Arias

^*Corresponding author for this work

Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaper › Journal article › Research › peer-review

Abstract

The present study presents the first attempt to demonstrate the online monitoring of components responsible for odor sensation from a constructed wetland (CW) utilized in treating combined sewer overflow (CSO). An experimental CSO treatment plant located in the south of Chile, employing a vertical flow (VF) CW, was monitored. The components responsible for odor generation—hydrogen sulphide (H₂S), methyl mercaptan (CH₃SH), ammonia (NH₃), and volatile organic compounds (VOCs)—were tracked for 27 days. During the study, the VF CW underwent two operational phases with CSO loadings, each lasting four days. The findings reveal minimal generation of H₂S, CH₃SH and NH₃ from the VF CW during the monitoring period, regardless of its operational status or the time of the day. However, VOCs exhibited different behavior. VOCs emerged as a potential contributor to odor sensation, with elevated levels observed during specific morning hours, which intensified when the VF CW was not operational. Nevertheless, the results suggest that the VF CW treatment has a limited impact on the production of gases responsible for odor sensation. This is complementary to previous studies focusing on water quality assessment, highlighting the potential of this technology for sustainable CSO treating.

Original language	English
Journal	Environmental Science: Water Research and Technology
Volume	10
Issue	9
Pages (from-to)	2013-2019
Number of pages	7
ISSN	2053-1400
DOIs	https://doi.org/10.1039/d4ew00303a
Publication status	Published - 2 Jul 2024

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title = "First report of components responsible for odor sensation from a vertical flow constructed wetland treating combined sewer overflow",

abstract = "The present study presents the first attempt to demonstrate the online monitoring of components responsible for odor sensation from a constructed wetland (CW) utilized in treating combined sewer overflow (CSO). An experimental CSO treatment plant located in the south of Chile, employing a vertical flow (VF) CW, was monitored. The components responsible for odor generation—hydrogen sulphide (H2S), methyl mercaptan (CH3SH), ammonia (NH3), and volatile organic compounds (VOCs)—were tracked for 27 days. During the study, the VF CW underwent two operational phases with CSO loadings, each lasting four days. The findings reveal minimal generation of H2S, CH3SH and NH3 from the VF CW during the monitoring period, regardless of its operational status or the time of the day. However, VOCs exhibited different behavior. VOCs emerged as a potential contributor to odor sensation, with elevated levels observed during specific morning hours, which intensified when the VF CW was not operational. Nevertheless, the results suggest that the VF CW treatment has a limited impact on the production of gases responsible for odor sensation. This is complementary to previous studies focusing on water quality assessment, highlighting the potential of this technology for sustainable CSO treating.",

author = "Vera-Puerto, {Ismael L.} and Shrabana Sarkar and Gianfranco Moris and Hugo Vald{\'e}s and Marco Quiroz and Juan L{\'o}pez and Francisco Encina and Pascal Molle and Arias, {Carlos A.}",

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doi = "10.1039/d4ew00303a",

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First report of components responsible for odor sensation from a vertical flow constructed wetland treating combined sewer overflow. / Vera-Puerto, Ismael L.; Sarkar, Shrabana; Moris, Gianfranco et al.
In: Environmental Science: Water Research and Technology, Vol. 10, No. 9, 02.07.2024, p. 2013-2019.

Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaper › Journal article › Research › peer-review

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T1 - First report of components responsible for odor sensation from a vertical flow constructed wetland treating combined sewer overflow

AU - Vera-Puerto, Ismael L.

AU - Sarkar, Shrabana

AU - Moris, Gianfranco

AU - Valdés, Hugo

AU - Quiroz, Marco

AU - López, Juan

AU - Encina, Francisco

AU - Molle, Pascal

AU - Arias, Carlos A.

PY - 2024/7/2

Y1 - 2024/7/2

N2 - The present study presents the first attempt to demonstrate the online monitoring of components responsible for odor sensation from a constructed wetland (CW) utilized in treating combined sewer overflow (CSO). An experimental CSO treatment plant located in the south of Chile, employing a vertical flow (VF) CW, was monitored. The components responsible for odor generation—hydrogen sulphide (H2S), methyl mercaptan (CH3SH), ammonia (NH3), and volatile organic compounds (VOCs)—were tracked for 27 days. During the study, the VF CW underwent two operational phases with CSO loadings, each lasting four days. The findings reveal minimal generation of H2S, CH3SH and NH3 from the VF CW during the monitoring period, regardless of its operational status or the time of the day. However, VOCs exhibited different behavior. VOCs emerged as a potential contributor to odor sensation, with elevated levels observed during specific morning hours, which intensified when the VF CW was not operational. Nevertheless, the results suggest that the VF CW treatment has a limited impact on the production of gases responsible for odor sensation. This is complementary to previous studies focusing on water quality assessment, highlighting the potential of this technology for sustainable CSO treating.

AB - The present study presents the first attempt to demonstrate the online monitoring of components responsible for odor sensation from a constructed wetland (CW) utilized in treating combined sewer overflow (CSO). An experimental CSO treatment plant located in the south of Chile, employing a vertical flow (VF) CW, was monitored. The components responsible for odor generation—hydrogen sulphide (H2S), methyl mercaptan (CH3SH), ammonia (NH3), and volatile organic compounds (VOCs)—were tracked for 27 days. During the study, the VF CW underwent two operational phases with CSO loadings, each lasting four days. The findings reveal minimal generation of H2S, CH3SH and NH3 from the VF CW during the monitoring period, regardless of its operational status or the time of the day. However, VOCs exhibited different behavior. VOCs emerged as a potential contributor to odor sensation, with elevated levels observed during specific morning hours, which intensified when the VF CW was not operational. Nevertheless, the results suggest that the VF CW treatment has a limited impact on the production of gases responsible for odor sensation. This is complementary to previous studies focusing on water quality assessment, highlighting the potential of this technology for sustainable CSO treating.

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First report of components responsible for odor sensation from a vertical flow constructed wetland treating combined sewer overflow

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