The effect of organic matter fractions on micropollutant ozonation in wastewater effluents

Gijn, K. van; Zhao, Yujie; Balasubramaniam, A.; Wilt, H.A. de; Carlucci, Livio; Langenhoff, Alette; Rijnaarts, H.H.M.

doi:10.1016/j.watres.2022.118933

Cited by 23 publications

(4 citation statements)

References 33 publications

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“…The most crucial factor affecting the efficiency and effectivity of micropollutants (MPs) ozonation in wastewater effluents is the organic matter (Gijn et al, 2022). Trace organic compounds (TrOCs) with electron-rich functional groups are oxidized by ozone efficiently, while other TrOCs by hydroxyl (•OH) radical, through an indirect pathway (Zucker et al, 2016).…”

Section: Micropollutants Eliminationmentioning

confidence: 99%

Transformation of Traditional Wastewater Treatment Methods into Advanced Oxidation Processes and the Role of Ozonation

Nikbeen¹,

Nayab²

2023

J. Ecol. Eng.

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Technology advancement improves the quality of life, however, it might also introduce new pollutants to the ecosystem, which needs to deal with for the goal of a sustainable ecosystem. Municipal and industrial wastewater has always been important in improving the quality of life while maintaining the sustainability of our planet simultaneously. The diversity of pollutants in wastewater requires more advanced and demanding treatment processes. The ozonation, as a crucial part of the advanced oxidation processes, is a superior oxidation method compared to traditional oxidation methods. After the recognition of ozone as GRAS (generally recognized as safe), its applications have diversified and is used currently for microbial inactivation, degradation of recalcitrant organic compounds, removal of a diverse range of micropollutants, solubilization and reduction of sludge, and removal of color and odor components in wastewaters treatment processes. However, some considerable challenges still exist towards its universal application, such as high ozone generation costs, diversity of pollutants, and formation of ozonation by-products, which still require further studies. The main theme of this review paper is the transformation of traditional oxidation methods into advanced oxidation processes and the role of ozonation in this regard, including its applications, by-products, and its comparison with the traditional oxidation methods and advanced oxidation processes.

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Section: Micropollutants Eliminationmentioning

confidence: 99%

Transformation of Traditional Wastewater Treatment Methods into Advanced Oxidation Processes and the Role of Ozonation

Nikbeen¹,

Nayab²

2023

J. Ecol. Eng.

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“…The dose required to achieve micropollutant removal (≈2–5 mg O 3 L –1 ), color removal (≈5–25 mg O 3 L –1 ), or disinfection (≈4–10 mg O 3 L –1 ), for example, can vary. It will depend on factors such as the reactivity of the micropollutants, sensitivity of the biological indicator to ozone and other generated radicals, reactivity of the effluent organic matter (EfOM), presence of scavenging compounds, and more. , Ozone installations need to be customized for each specific case, with operational parameters adjusted to the treatment objective as well as the quality of the influent in accordance with the effluent quality parameter limits mandated by local legislation.…”

Section: Introductionmentioning

confidence: 99%

Total Coliforms and Escherichia coli Inactivation as Surrogates of Ozone Pharmaceutical Removal in Secondary Effluents: The Microlog Concept

Dantas,

Cristale,

Gómez-Canela

et al. 2024

ACS EST Water

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Despite the well-known efficiency of ozonation in treating secondary effluents and its increasing global application, the removal of micropollutants is still a matter of concern. Ozone installations for tertiary treatment are typically installed with specific objectives such as disinfection, color and odor removal, and micropollutant removal, among others. However, due to factors such as the absence of legislation in many countries, complexity, and cost of analysis, for example, the accurate assessment of micropollutant removal during ozonation is limited to a few legislated compounds. This study aimed to contribute to the evaluation of pharmaceutical removal by introducing an index that correlates the inactivation of common bacteria widely used as disinfection indicators (total coliforms and Escherichia coli) with the removal of micropollutants during ozonation of secondary effluents. The developed index, named Microlog, was tested in three different wastewater treatment plants and compared with existing literature data. Strong correlations were observed between the log 10 reduction of bacteria and the percentage of specific micropollutant removal, regardless of the effluent quality. The Microlog concept can serve as an additional tool for assessing the final removal of micropollutants when the ozone disinfection of the wastewater treatment plant effluent is measured.

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“…MPs were measured in bioreactors and in the ozone reactor using liquid chromatography coupled to mass spectrometry. Methods for OM and MP measurements were the same as in our previous study [233]. The tier 1 risk quotient (RQ) of the MPs in the samples [243] were calculated by dividing the measured MP concentration by the lowest predicted no effect concentrations (PNEC) for freshwater obtained from the NORMAN database (Table S5.1).…”

Section: Organic Matter and Micropollutantsmentioning

confidence: 99%

“…The main reason for the high energy demand and costs of ozone treatment is that OM interferes with the ozonation of MPs. OM is typically present at approximately 5-20 mg/L [233], which is a 10 3 -10 6 times higher concentration than the concentrations of MPs.…”

Section: Introductionmentioning

confidence: 97%

The BO3 process for removal of micropollutants from wastewater treatment plant effluent : exploring the synergies between biological treatment and ozonation

Gijn¹

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Wastewater treatment plant effluent is an i mportant point source for micropollutants emissions into the environment. These micropollutants can pose risks for ecosystems and humans; therefore, wastewater treatment plants should be upgraded to improve their micropollutant removal. Micropollutant removal can be improved by implementing tertiary treatment such as ozonation or activated carbon filtration. However, organic matter in the wastewater treatment plant effluent interferes with the micropollutant removal in these tertiary treatments, resulting in high energy demand and costs. To decrease the energy demand of tertiary treatment, biological pre-treatment can be introduced to remove effluent organic matter in an energy efficient manner. This biological pre-treatment was optimized by comparing three types of bioreactors; biological activated carbon, sand filter, and moving bed bioreactor. The reactors were operated at five flow rates (0.25, 0.5, 1, 2 and 4 L/h) in a continuous setup. The biological activated carbon filter achieved higher effluent organic matter removal than the sand filter and moving bed bioreactor (up to 72, 41, and 21% respectively). Additionally, effluent organic matter removal was negatively correlated to the flow rate in the biological activated carbon filter and the sand filter. The biological activated carbon filter also achieved average removal of 85% for the 18 analyzed micropollutants, although how long this high micropollutant removal can be sustained is unclear. To conclude, the biological activated carbon filter as pre-treatment can achieve high effluent organic matter removal, which would decreases the energy demand and cost of subsequent treatment for micropollutant removal.

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The effect of organic matter fractions on micropollutant ozonation in wastewater effluents

Cited by 23 publications

References 33 publications

Transformation of Traditional Wastewater Treatment Methods into Advanced Oxidation Processes and the Role of Ozonation

Transformation of Traditional Wastewater Treatment Methods into Advanced Oxidation Processes and the Role of Ozonation

Total Coliforms and Escherichia coli Inactivation as Surrogates of Ozone Pharmaceutical Removal in Secondary Effluents: The Microlog Concept

The BO3 process for removal of micropollutants from wastewater treatment plant effluent : exploring the synergies between biological treatment and ozonation

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