Oxidation of Emerging Contaminants during Pilot-Scale Ozonation of Secondary Treated Municipal Effluent

Singh, Saileshkumar; Seth, Rajesh; Tabe, Shahram; Yang, Paul

doi:10.1080/01919512.2014.998755

Cited by 22 publications

(12 citation statements)

References 33 publications

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“…Almost complete disappearance of BPA was attained by ozonation of the secondary effluent obtained from WWTP-A, whereas the BPA elimination rate ranged between 80 and 88% for the effluent sample of WWTP-B. These outcomes were essentially in concordance with the results of a recent study conducted by Singh et al (2015), who reported that the transformation of BPA was more than 80% at the ozone doses of 0.46 and 0.72 mg O 3 /mg DOC.…”

Section: Evaluation Of Ozonation Efficiency Based On Individual Mp Removalsupporting

confidence: 88%

“…Ozonation has been intensively tested as an AOP technology in laboratory- (Mecha et al 2016;Chys et al 2017), pilot- (Gerrity et al 2011;Singh et al 2015), and full-scale (Blackbeard et al 2016;Schollée et al 2018) studies and proved to be one of the most efficient and easily implementable techniques for the abatement of MPs in municipal wastewater effluents (Gomes et al 2017;Cruz-Alcalde et al 2019). Particularly in Switzerland, this process is considered as one of the best available technologies to fulfill the requirements of the Swiss Water Protection Act, which aims to ensure an average removal of the twelve indicator compounds by ≥ 80% over the whole treatment and requires an upgrade of selected MWWTPs (Eggen et al 2014;Norte et al 2018).…”

Section: Introductionmentioning

confidence: 99%

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Ozonation in advanced treatment of secondary municipal wastewater effluents for the removal of micropollutants

Doğruel

Atesci

Aydın³

et al. 2020

Environ Sci Pollut Res

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The objective of this study was the experimental evaluation of ozonation as an additional treatment step for the removal emerging contaminants from secondary effluents of two wastewater treatment plants (WWTPs), one receiving a primarily domestic wastewater (WWTP-A), and the other one domestic sewage together with pretreated tannery wastewater streams (WWTP-B). The experimental runs were conducted at two different pH values (i.e., original pH and adjusted pH of 10) and at six different ozone doses ranging between 0.2 and 1.5 mg O 3 /mg DOC. A total of 20 compounds, including 12 micropollutants (MPs) and 8 metabolites, were selected as the target analytes for the evaluation of ozonation performance. When the tested MPs and metabolites were considered individually, the maximum elimination level for each compound was reached at different doses; therefore, optimum ozone doses were determined based on the reduction of the total MP content. Ozonation at the original pH with an ozone dose in the range of 0.4-0.6 and 0.8-1.0 mg O 3 /mg DOC was selected as the optimum operating condition for WWTP-A and WWTP-B, respectively, both resulting in an average overall removal efficiency of 55%. Ozone treatment yielded only poor elimination for o-desmethyl naproxen (15%), which was found to be by far the main contributor accounting alone for approximately 30% of the total MP concentration in the secondary effluents. The systematic approach used in this study could well be adopted as a guide to other domestic and municipal WWTPs, which are thought to have a highly variable composition in terms of the MPs and metabolites.

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Section: Evaluation Of Ozonation Efficiency Based On Individual Mp Removalsupporting

confidence: 88%

Section: Introductionmentioning

confidence: 99%

Ozonation in advanced treatment of secondary municipal wastewater effluents for the removal of micropollutants

Doğruel

Atesci

Aydın³

et al. 2020

Environ Sci Pollut Res

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“…Ozone has been shown to be very effective in oxidizing many CECs in municipal wastewater treatment plant effluents mostly through monitoring the disappearance of the parent compound (Gerrity et al 2011;Hollender et al 2009;Huber et al 2005;Lee et al 2012;Reungoat et al 2010;Singh et al 2012b;Snyder et al 2006;Ternes et al 2003). The process can be designed to achieve both CEC oxidation and typical disinfection targets used in North America (Singh et al 2012a,b).…”

Section: Introductionmentioning

confidence: 98%

Effect of Media on Biofilter Performance Following Ozonation of Secondary Treated Municipal Wastewater Effluent: Sand vs. GAC

Reaume

Seth

McPhedran

et al. 2014

Ozone: Science & Engineering

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Ozone has been shown to be effective in the transformation of several chemicals of emerging concern that escape the wastewater treatment process, but there is concern whether toxic transformation products are formed. Two parallel biofilter columns with granular activated carbon (GAC) and filter sand following a pilot-scale ozone unit to treat secondary treated municipal wastewater were studied. Results show reduced wastewater genotoxicity following ozonation and further reduction following biofiltration. The BAC biofilter outperformed the sand biofilter in terms of reduction in both organics and genotoxicity. Biofilter performance correlated with biological indicators (dissolved oxygen reduction and effluent E. coli counts) but not with ATP bioactivity measurements. Limited bacterial (E. coli) regrowth was observed in treated effluent from both biofilters.

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“…), with already very low concentrations in the range of μg L -1 to trigger them; therefore they are called micropollutants. 8,6,7 Due to the presence of numerous species, their harmful effects are multiplied by the so-called "cocktail effect". 9 Their persistency in the environment and the bioaccumulation are of further concern, as well as the challenges of drinking and waste water treatment, since they are poorly responsive to the removal by traditional technologies (e.g.…”

Section: Introductionmentioning

confidence: 99%

“…Synthetic organic compounds (SOCs) originating from various anthropogenic activities induce reactions in the organisms for which no adequate biological response is available seeing that their presence in the environment is relatively new and no mechanism could be developed to adapt to them so quickly. [6][7][8] These chemicals show mostly long-term detrimental effects (carcinogenicity, mutagenicity, genotoxicity, disruption of endocrine system etc. ), with already very low concentrations in the range of μg L -1 to trigger them; therefore they are called micropollutants.…”

Section: Introductionmentioning

confidence: 99%

The Enhancement of H2O2/UV AOPs for the Removal of Selected Organic Pollutants from Drinking Water with Hydrodynamic Cavitation

Čehovin

Medic²,

Kompare

et al. 2016

ACSi

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Drinking water contains organic matter that occasionally needs to be treated to assure its sufficient quality and safety for the consumers. H 2 O 2 and UV advanced oxidation processes (H 2 O 2 /UV AOPs) were combined with hydrodynamic cavitation (HC) to assess the effects on the removal of selected organic pollutants. Water samples containing humic acid, methylene blue dye and micropollutants (metaldehyde, diatrizoic acid, iohexol) were treated first by H 2 O 2 (dosages from 1 to 12 mg L -1 ) and UV (dosages from 300 to 2800 mJ cm -2 ) AOPs alone and later in combination with HC, generated by nozzles and orifice plates (4, 8, 18 orifices). Using HC, the removal of humic acid was enhanced by 5-15%, methylene blue by 5-20% and metaldehyde by approx. 10%. Under favouring conditions, i.e. high UV absorbance of the matrix (more than 0.050 cm -1 at a wavelength of 254 nm) and a high pollutant to oxidants ratio, HC was found to improve the hydrodynamic conditions in the photolytic reactor, to improve the subjection of the H 2 O 2 to the UV fluence rate distribution and to enhance the removal of the tested organic pollutants, thus showing promising potential of further research in this field.

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Oxidation of Emerging Contaminants during Pilot-Scale Ozonation of Secondary Treated Municipal Effluent

Cited by 22 publications

References 33 publications

Ozonation in advanced treatment of secondary municipal wastewater effluents for the removal of micropollutants

Ozonation in advanced treatment of secondary municipal wastewater effluents for the removal of micropollutants

Effect of Media on Biofilter Performance Following Ozonation of Secondary Treated Municipal Wastewater Effluent: Sand vs. GAC

The Enhancement of H2O2/UV AOPs for the Removal of Selected Organic Pollutants from Drinking Water with Hydrodynamic Cavitation

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