Removal and reduction of selected organic micro-pollutants in effluent sewage by the ozone-based oxidation processes

Zhou, Haidong; Liu, Jianbo; Xia, Haiwei; Zhang, Qingjun; Ying, Tianqi; Hu, Tao

doi:10.1016/j.cej.2015.01.116

Cited by 27 publications

(7 citation statements)

References 45 publications

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“…3), except diclofenac (95.0% removal) and ibuprofen (99.3% removal), which are more refractory than all the others, as well as carbamazepine and fluoxetine which were significantly removed but still detected under the MQL after the ozonation process. In general, the removal rates obtained for most compounds were above those reported in other works leading with ozonation at real concentrations in WWTP effluents [16,[31][32][33], except for diclofenac [16,32]. Although the effectiveness of ozonation for the removal of the studied organic compounds, the scarce implementation of such technology to urban wastewaters is mainly related to the lack of legislation and analytical methods for micropollutants in this particular type of wastes, despite of other shortcomings as the common presence of scavengers in these wastewaters, as well as the possible formation of reaction by-products more toxic than the parent compounds [7].…”

Section: Quantification Of Micropollutants In Wwtp Effluents Before Asupporting

confidence: 44%

Environmental friendly method for urban wastewater monitoring of micropollutants defined in the Directive 2013/39/EU and Decision 2015/495/EU

Ribeiro

Pedrosa

Moreira

et al. 2015

Journal of Chromatography A

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Section: Quantification Of Micropollutants In Wwtp Effluents Before Asupporting

confidence: 44%

Environmental friendly method for urban wastewater monitoring of micropollutants defined in the Directive 2013/39/EU and Decision 2015/495/EU

Ribeiro

Pedrosa

Moreira

et al. 2015

Journal of Chromatography A

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“…Similar results were reported by Zhou et al . . The finding from the present study is in contrast with finding of Ikehata et al .…”

Section: Resultscontrasting

confidence: 99%

“…For all the studied pharmaceuticals except for acidic the ozonation reaction produced water solutions with a TU values <10, suggesting that ozone changed the toxicity of these water solutions from toxic not harmful. Similar results were reported by Zhou et al [44]. The finding from the present study is in contrast with finding of Ikehata et al [51] which showed that treatment of pharmaceuticals by ozonation can generate products of greater toxicity than the parent compound.…”

Section: Organic Matter Mineralization and Solution Toxicitysupporting

confidence: 81%

“… showed that the oxidation of EED by the secondary formed hydroxyl radicals was the dominant oxidation path way. EDD ( C i = 5 μg L −1 ) was also removed up to 67.5% from a prefiltered effluent sewage by ozone dose of 50 μg L −1 . The reactivity of estrogens with ozone can be attributed to presence of phenolic moiety in the structure of these molecules which has a high reactivity with either ozone and/or hydroxyl radicals.…”

Section: Resultsmentioning

confidence: 99%

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Removal of emerging pharmaceuticals from wastewater by ozone‐based advanced oxidation processes

Almomani

Shawaqfah

Bhosale

et al. 2016

Env Prog and Sustain Energy

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This study investigates the use of ozone as a pretreatment process for water containing pharmaceuticals. Experiments were carried out on synthetic wastewater, surface water, and the effluent of wastewater treatment plant. The degradation efficiencies of four groups of pharmaceuticals (antibiotics, estrogens, acidic, and neutral) were studied, and the effect of ozone dose and pH on the degradation efficiency was monitored. A Microtox™ bioassay test was used to evaluate the change in the toxicity of aqueous solutions before and after ozonation. The efficiency of oxidation of antibiotics, estrogens, and neutral pharmaceuticals increased as the ozone dose and pH increased. Ozone input dose of 188.1, 222.3, and 222.4 mg h−1was found to be optimum yielding the highest oxidation efficiency for the studied pharmaceuticals in synthetic wastewater, surface water and effluent of wastewater treatment plant, respectively. An average specific ozone dose of 2.05 for antibiotics, 1.11 for estrogens, and 1.30 mg O3/mg DOC for neutral pharmaceuticals reduced significantly the acute the toxicity of the water solutions and mineralized more than 40%, 33%, and 23% of DOC in less than 1 min. The kinetics of ozone with pharmaceuticals was modeled for synthetic wastewater as an overall second‐order reaction with a rate constant ranging from 103 to 106 M−1 s−1. The results indicate the effectiveness of ozone‐based advanced oxidation processes in removing emerging pharmaceuticals from water and wastewater. The results showed that ozonation process is more effective than other conventional oxidation processes (Cl2 and ClO2) in eliminating pharmaceuticals and reducing the toxicity of the effluent water or wastewater. © 2016 American Institute of Chemical Engineers Environ Prog, 35: 982–995, 2016

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“…Thus, GAC is usually quoted as “biological activated carbon (BAC)” as well. In this pilot integrated system, ozonation may degrade part of the organic pollutants to smaller and more biodegradable ones, which are further removed by GAC/BAC filtration (Shokri, 2015; Zhou et al., 2015).…”

Section: Resultsmentioning

confidence: 99%

Ceramic membrane based hybrid process for the upgrade of rural water treatment plants: A pilot study

Chen

et al. 2020

Water Environment Research

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An integrated process with ozonation, ceramic membrane ultrafiltration, and activated carbon filtration is investigated for the treatment of drinking water in the rural area of China. A pilot-scale experiment with a capacity of 20 m 3 /d is conducted, and a number of water quality parameters are evaluated, such as turbidity, color, organic matter (COD Mn), manganese (Mn), geosmin (GSM), 2-methylisoborneol (2-MIB), and 37 kinds of pharmaceutical and personal care products (PPCPs). The result shows that the removal efficiency of all the evaluated parameters of this integrated process is much higher than that of the conventional treatment processes. In particular, the removal rate of PPCPs achieves 52.5%, which is twice higher than that of the conventional process. Moreover, ozone can oxidize manganese ions, degrade organic matters, and reduce membrane fouling. It is believed that the integrated treatment process developed in this study is efficient in upgrading the existing water treatment plants and ensuring the safety of drinking water in the rural areas around the world.

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Removal and reduction of selected organic micro-pollutants in effluent sewage by the ozone-based oxidation processes

Cited by 27 publications

References 45 publications

Environmental friendly method for urban wastewater monitoring of micropollutants defined in the Directive 2013/39/EU and Decision 2015/495/EU

Environmental friendly method for urban wastewater monitoring of micropollutants defined in the Directive 2013/39/EU and Decision 2015/495/EU

Removal of emerging pharmaceuticals from wastewater by ozone‐based advanced oxidation processes

Ceramic membrane based hybrid process for the upgrade of rural water treatment plants: A pilot study

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