A study on the reactivity characteristics of dissolved effluent organic matter (EfOM) from municipal wastewater treatment plant during ozonation

Jin, Pengkang; Jin, Xin; Bjerkelund, Viggo A.; Østerhus, Stein W.; Wang, Xiaochang C.; Yang, Lei

doi:10.1016/j.watres.2015.10.060

Cited by 140 publications

(34 citation statements)

References 54 publications

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“…The HI fractions were the largest based on TOC, followed by the HON fraction and the HOA fraction ( Figure 1B). Other studies using resin fractionation found similar effluent compositions (Imai et al 2002;P. Jin et al 2016;Qi et al 2018;Zhang et al 2008).…”

Section: Fractionationmentioning

confidence: 65%

“…Both TOC and COD are bulk parameters that mainly give information about the quantity of EfOM. However, also the type of OM in WWTP effluent strongly affects the reactivity of OM with ozone (P. Jin et al 2016;Qi et al 2018;Westerhoff et al 1999). Still, EfOM composition and its interactions with the ozonation of MPs are poorly understood.…”

Section: Introductionmentioning

confidence: 99%

“…Resin fractionation experiments showed that hydrophobic-neutral and -acid compounds are removed during ozonation, while hydrophilic compounds are produced (P. Jin et al 2016;Qi et al 2018). Still, it is not clear if and if so how differences in ozone reactivity of EfOM fractions affect the ozonation of MPs.…”

Section: Introductionmentioning

confidence: 99%

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Optimizing Micropollutant Removal by Ozonation; Interference of Effluent Organic Matter Fractions

Gijn

Sohier

Maasdam

et al. 2021

Ozone: Science & Engineering

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Ozonation for micropollutant removal from wastewater treatment plant effluent is energy and costintensive because of competition between background organic matter and micropollutants. This study aims to elucidate the interference of different organic matter fractions during the ozonation of micropollutants. Wastewater treatment plant effluent was fractionated using membranes and XAD-8 resin. All membrane and resin fractions were spiked with 18 micropollutants (2 µg/L) and ozonated with 0.25, 0.5 and 1 g O 3 /g TOC. Results show that these fractions differ in their interference with the ozonation of micropollutants. Interference was lower in the smallest size fraction (<1 kDa) than in all other fractions for micropollutants with low and medium ozone reactivity. The hydrophobic neutrals and hydrophilics resin factions showed a high interference for ozonation of micropollutants with medium and high ozone reactivity, respectively. The four parameters that were analyzed (specific UV absorbance at 254 nm, fluorescence, chemical oxygen demand and nitrite) could not elucidate the differences in micropollutant removal. Still, we conclude that understanding the type of organic matter present in the matrix, is essential to optimize micropollutant ozonation and other tertiary micropollutant removal treatments.

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Section: Fractionationmentioning

confidence: 65%

Section: Introductionmentioning

confidence: 99%

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Optimizing Micropollutant Removal by Ozonation; Interference of Effluent Organic Matter Fractions

Gijn

Sohier

Maasdam

et al. 2021

Ozone: Science & Engineering

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show abstract

“…Fluorescence on the contrary is a straight forward measurement, and previous studies (e.g. Li et al, 2016;Jin et al, 2016) have documented high correlation between the two methods. The numerous fluorescent properties of aquatic DOM, its high reactivity with ozone and the risk of ozone's presence in culture tanks raise questions related to the ability of fluorescence to measure indirectly the delivery of ozone into water.…”

Section: Introductionmentioning

confidence: 90%

Use of fluorescence spectroscopy to control ozone dosage in recirculating aquaculture systems

Spiliotopoulou¹,

Martin²,

Pedersen

et al. 2017

Water Research

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The aim of this study was to investigate the potential of fluorescence spectroscopy to be used as an ozone dosage determination tool in recirculating aquaculture systems (RASs), by studying the relationship between fluorescence intensities and dissolved organic matter (DOM) degradation by ozone, in order to optimise ozonation treatment. Water samples from six different Danish facilities (two rearing units from a commercial trout RAS, a commercial eel RAS, a pilot RAS and two marine water aquariums) were treated with different O dosages (1.0-20.0 mg/L ozone) in bench-scale experiments, following which fluorescence intensity degradation was eventually determined. Ozonation kinetic experiments showed that RAS water contains fluorescent organic matter, which is easily oxidised upon ozonation in relatively low concentrations (0-5 mg O/L). Fluorescence spectroscopy has a high level of sensitivity and selectivity in relation to associated fluorophores, and it is able to determine accurately the ozone demand of each system. The findings can potentially be used to design offline or online sensors based on the reduction by ozone of natural fluorescent-dissolved organic matter in RAS. The suggested indirect determination of ozone delivered into water can potentially contribute to a safer and more adequate ozone-based treatment to improve water quality.

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“…3D-EEM spectroscopy is a useful technique of analyzing the chemical properties of the organic compounds present in the wastewater, which can be evaluated based on the position, shift, and intensity of the fluorescence peaks present in the obtained spectrum [54]. Figure 12a shows the 3D-EEM spectrum of an untreated wastewater sample while Figure 12b shows the 3D-EEM spectrum of the wastewater sample after the heterogeneous photocatalytic reaction.…”

Section: Resultsmentioning

confidence: 99%

Synthesis of Petal-Like MnO2 Nanosheets on Hollow Fe3O4 Nanospheres for Heterogeneous Photocatalysis of Biotreated Papermaking Effluent

Peng

et al. 2019

Materials

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Owing to the implementation of increasingly stringent water conservation policies and regulations, the pulp and paper mill industry must make increased efforts to meet the limits for pollutant emissions. The primary pretreatment and secondary biochemical treatment methods used currently generally fail to meet the country-specific environmental regulations, and the wastewater must be processed further even after being subjected to secondary biochemical treatments. In this work, we synthesized Fe3O4/MnO2 nanocomposites (FMNs) with a flower-like structure for use in the heterogeneous photocatalytic treatment of biotreated papermaking wastewater. FMNs1.25, which were formed using a KMnO4/Fe3O4 molar ratio of 1.25, could be separated readily using an external magnetic field and exhibited higher photocatalytic activity than those of the other samples as well as MnO2 and Fe3O4. The effects of various experimental parameters on the photocatalytic activity of FMNs1.25, including the initial pH of the wastewater and the catalyst dosage, were determined. The common chemical oxygen demand (CODCr) reduction rate in the case of this sample reached 56.58% within 120 min at a pH of 3, the CODCr of effluent after treatment was 52.10 mg/L. Further, even under neutral conditions, the CODCr of the treated effluent was below the current limit for discharge in China. Moreover, the nanocomposites exhibited good recyclability, and their catalytic activity did not decrease significantly even after five usage cycles. This study should serve as a platform for the fabrication of effective photocatalysts for the advanced treatment of biotreated papermaking effluent and refractory organic wastewater.

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A study on the reactivity characteristics of dissolved effluent organic matter (EfOM) from municipal wastewater treatment plant during ozonation

Cited by 140 publications

References 54 publications

Optimizing Micropollutant Removal by Ozonation; Interference of Effluent Organic Matter Fractions

Optimizing Micropollutant Removal by Ozonation; Interference of Effluent Organic Matter Fractions

Use of fluorescence spectroscopy to control ozone dosage in recirculating aquaculture systems

Synthesis of Petal-Like MnO2 Nanosheets on Hollow Fe3O4 Nanospheres for Heterogeneous Photocatalysis of Biotreated Papermaking Effluent

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