A systematic study on the odorants characterization and evaluation in a plain reservoir with wetlands ecosystem

Guo, Qingyuan; Li, Xuan; Chen, YangQuan; Wang, Chunmiao; Li, Zhaoxia; Wei-xing, MA; Ding, Cheng; Yang, Min

doi:10.1016/j.jhazmat.2020.122404

Cited by 13 publications

(3 citation statements)

References 43 publications

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“…The occurrence status in China can exemplify this fact. While the number of reported fishy odor occurrences in China is the second to that of the U.S [43][44][45][46][47][48][49][50], these two countries completely differ in their history of fishy odor. The oldest occurrence in China took place in 1992, immediately before the beginning of the 21st century [43].…”

Section: Severeness Of the Fishy Odormentioning

confidence: 99%

The Status Quo of Causal Substance Exploration for Fishy Odor in Raw Water for Taps

Shinfuku

Takanashi

Nakajima

et al. 2022

J. of Wat. & Envir. Tech.

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Algal bloom in a closed water basin is sometimes problematic, especially in terms of the off-flavor in tap water because of an increased amount of odorous metabolites produced by them. Unfortunately, the current water purification process does not always function properly to remove odorants in tap water. Fishy odor is one of the most frequently detected off-flavor in tap water across the world and a number of papers have studied its occurrence mechanism; however, the determination of its causal substance remains rather formidable. The objective of this review paper is therefore to pave a way for unequivocal identification of a causal substance of the fishy odor. We propose that focusing on already reported odorants is not enough to achieve this; an unknown odorant possibly contributes to the occurrence of the fishy odor. An extensive exploration using a novel technique, such as a combination of high-resolution mass spectrometry and multivariate analysis, can be a promising methodology to discover proper odorant.

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Section: Severeness Of the Fishy Odormentioning

confidence: 99%

The Status Quo of Causal Substance Exploration for Fishy Odor in Raw Water for Taps

Shinfuku

Takanashi

Nakajima

et al. 2022

J. of Wat. & Envir. Tech.

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“…Odor activity values (OAVs) and reconstitution tests con rmed the identi ed compounds' odor contribution (Benkwitz et al 2012;Guo et al 2019a). The above approaches have successfully identi ed and con rmed the odor-causing compounds in the food industries, including coffee, wine, fruit, and the water matrix (Chin et al 2011;Benkwitz et al 2012;Guo et al 2020).…”

Section: Introductionmentioning

confidence: 99%

Implications for emergency response to the severe odor incident occurred in source water: Potential odorants and control strategy

Guo

Chen

et al. 2021

Environ Sci Pollut Res

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Sudden odor incidents occurring in the source water have been a severe problem for water suppliers. In order to apply emergency control measures effectively, it is necessary to identify the target compounds responsible for odor incidents rapidly. The present work identi ed the odorants and explored emergency disposal mechanisms for sudden and severe odors in the QT River's drinking water source (HZ city, China). Medicinal, chemical, septic, and musty odors with strong intensities were detected in the source water. The effect of conventional treatments of drinking water treatment plant (DWTP) on odors' removal was limited, which was evident by the presence of medicinal, chemical, and musty odors with moderate intensities in the e uent of DWTP. Total seventeen odorants were identi ed successfully in the source water of QT River and the e uent of DWTP. The measured OAVs and reconstituting the identi ed odorants explained 87%, 87%, 89%, and 94% of medicinal, chemical, septic, and musty odors, respectively, in the source water of the QT River and 90%, 87%, and 88% of medicinal, chemical, and musty odors in the e uent. Styrene, phenol, 2-chlorophenol, 2-tertbutylphenol, and 2-methylphenol were associated with the medicinal odor, while propyl sul de, diethyl disul de, propyl disul de, and indole were related to the septic odor. Geosmin and 2-methylisoborneol (2-MIB) were responsible for the musty odor, and cyclohexanone, 1,4-dichlorobenzene, and nitrobenzene were involved with the chemical odor. Based on the characteristics of identi ed odorants, powdered activated carbon (PAC) was applied to control the odors in the QT River. The results indicated that the medicinal, chemical, septic, and musty odors could be removed entirely after adding 15 mg/L PAC, which effectively controlled emergency odor problems. Overall, the study would offer a scienti c basis and operational reference for emergency odor management and control in DWTP with similar complicated odor incidents.

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“…Furthermore, the emerged odor incidents in the water matrix identi ed as more severe and complex issues in recent years (Yu et Guo et al 2020). The characterization of odors and corresponding odorants in complicated odor incidents originated from industrial chemical contamination, and spills have always been a challenge (Dietrich et al 2015;Sain et al 2015;Guo et al 2016b).…”

Section: Introductionmentioning

confidence: 99%

Implications for Emergency Response to the Severe Odor Incident Occurred in Source Water: Potential Odorants and Control Strategy

Guo

Chen

et al. 2021

Preprint

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Sudden odor incidents occurring in the source water have been a severe problem for water suppliers. In order to apply emergency control measures effectively, it is necessary to identify the target compounds responsible for odor incidents rapidly. The present work identified the odorants and explored emergency disposal mechanisms for sudden and severe odors in the QT River's drinking water source (HZ city, China). Medicinal, chemical, septic, and musty odors with strong intensities were detected in the source water. The effect of conventional treatments of drinking water treatment plant (DWTP) on odors' removal was limited, which was evident by the presence of medicinal, chemical, and musty odors with moderate intensities in the effluent of DWTP. Total seventeen odorants were identified successfully in the source water of QT River and the effluent of DWTP. The measured OAVs and reconstituting the identified odorants explained 87%, 87%, 89%, and 94% of medicinal, chemical, septic, and musty odors, respectively, in the source water of the QT River and 90%, 87%, and 88% of medicinal, chemical, and musty odors in the effluent. Styrene, phenol, 2-chlorophenol, 2-tert-butylphenol, and 2-methylphenol were associated with the medicinal odor, while propyl sulfide, diethyl disulfide, propyl disulfide, and indole were related to the septic odor. Geosmin and 2-methylisoborneol (2-MIB) were responsible for the musty odor, and cyclohexanone, 1,4-dichlorobenzene, and nitrobenzene were involved with the chemical odor. Based on the characteristics of identified odorants, powdered activated carbon (PAC) was applied to control the odors in the QT River. The results indicated that the medicinal, chemical, septic, and musty odors could be removed entirely after adding 15 mg/L PAC, which effectively controlled emergency odor problems. Overall, the study would offer a scientific basis and operational reference for emergency odor management and control in DWTP with similar complicated odor incidents.

show abstract

A systematic study on the odorants characterization and evaluation in a plain reservoir with wetlands ecosystem

Cited by 13 publications

References 43 publications

The Status Quo of Causal Substance Exploration for Fishy Odor in Raw Water for Taps

The Status Quo of Causal Substance Exploration for Fishy Odor in Raw Water for Taps

Implications for emergency response to the severe odor incident occurred in source water: Potential odorants and control strategy

Implications for Emergency Response to the Severe Odor Incident Occurred in Source Water: Potential Odorants and Control Strategy

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