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Enhanced treatment of secondary municipal wastewater effluent : comparing (biological) filtration and ozonation in view of micropollutant removal, unselective effluent toxicity, and the potential for real-time control

(2017) WATER SCIENCE AND TECHNOLOGY. 76(1). p.236-246
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Abstract
Ozonation and three (biological) filtration techniques (trickling filtration (TF), slow sand filtration (SSF) and biological activated carbon (BAC) filtration) have been evaluated in different combinations as tertiary treatment for municipal wastewater effluent. The removal of 18 multi-class pharmaceuticals, as model trace organic contaminants (TrOCs), has been studied. (Biological) activated carbon filtration could reduce the amount of TrOCs significantly (>99%) but is cost-intensive for full-scale applications. Filtration techniques mainly depending on biodegradation mechanisms (TF and SSF) are found to be inefficient for TrOCs removal as a stand alone technique. Ozonation resulted in 90% removal of the total amount of quantified TrOCs, but a post-ozonation step is needed to cope with an increased unselective toxicity. SSF following ozonation showed to be the only technique able to reduce the unselective toxicity to the same level as before ozonation. In view of process control, innovative correlation models developed for the monitoring and control of TrOC removal during ozonation, are verified for their applicability during ozonation in combination with TF, SSF or BAC. Particularly for the poorly ozone reactive TrOCs, statistically significant models were obtained that correlate TrOC removal and reduction in UVA254 as an online measured surrogate parameter.
Keywords
(biological) activated carbon, ozonation, pharmaceuticals, slow sand filtration, spectral measurements, trickling filter, POWDERED ACTIVATED CARBON, CONTROL PARAMETER, OZONE, EFFICIENCY, OXIDATION, PHARMACEUTICALS, BIODEGRADATION, CIPROFLOXACIN, ECOTOXICITY, WASTEWATERS

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Citation

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Chicago
Chys, Michael, Kristof Demeestere, Ange Sabine Ingabire, Jan Dries, Herman Van Langenhove, and Stijn Van Hulle. 2017. “Enhanced Treatment of Secondary Municipal Wastewater Effluent : Comparing (biological) Filtration and Ozonation in View of Micropollutant Removal, Unselective Effluent Toxicity, and the Potential for Real-time Control.” Water Science and Technology 76 (1): 236–246.
APA
Chys, M., Demeestere, K., Ingabire, A. S., Dries, J., Van Langenhove, H., & Van Hulle, S. (2017). Enhanced treatment of secondary municipal wastewater effluent : comparing (biological) filtration and ozonation in view of micropollutant removal, unselective effluent toxicity, and the potential for real-time control. WATER SCIENCE AND TECHNOLOGY, 76(1), 236–246.
Vancouver
1.
Chys M, Demeestere K, Ingabire AS, Dries J, Van Langenhove H, Van Hulle S. Enhanced treatment of secondary municipal wastewater effluent : comparing (biological) filtration and ozonation in view of micropollutant removal, unselective effluent toxicity, and the potential for real-time control. WATER SCIENCE AND TECHNOLOGY. 2017;76(1):236–46.
MLA
Chys, Michael, Kristof Demeestere, Ange Sabine Ingabire, et al. “Enhanced Treatment of Secondary Municipal Wastewater Effluent : Comparing (biological) Filtration and Ozonation in View of Micropollutant Removal, Unselective Effluent Toxicity, and the Potential for Real-time Control.” WATER SCIENCE AND TECHNOLOGY 76.1 (2017): 236–246. Print.
@article{8522954,
  abstract     = {Ozonation and three (biological) filtration techniques (trickling filtration (TF), slow sand filtration (SSF) and biological activated carbon (BAC) filtration) have been evaluated in different combinations as tertiary treatment for municipal wastewater effluent. The removal of 18 multi-class pharmaceuticals, as model trace organic contaminants (TrOCs), has been studied. (Biological) activated carbon filtration could reduce the amount of TrOCs significantly (>99%) but is cost-intensive for full-scale applications. Filtration techniques mainly depending on biodegradation mechanisms (TF and SSF) are found to be inefficient for TrOCs removal as a stand alone technique. Ozonation resulted in 90% removal of the total amount of quantified TrOCs, but a post-ozonation step is needed to cope with an increased unselective toxicity. SSF following ozonation showed to be the only technique able to reduce the unselective toxicity to the same level as before ozonation. In view of process control, innovative correlation models developed for the monitoring and control of TrOC removal during ozonation, are verified for their applicability during ozonation in combination with TF, SSF or BAC. Particularly for the poorly ozone reactive TrOCs, statistically significant models were obtained that correlate TrOC removal and reduction in UVA254 as an online measured surrogate parameter.},
  author       = {Chys, Michael and Demeestere, Kristof and Ingabire, Ange Sabine and Dries, Jan and Van Langenhove, Herman and Van Hulle, Stijn},
  issn         = {0273-1223},
  journal      = {WATER SCIENCE AND TECHNOLOGY},
  keywords     = {(biological) activated carbon,ozonation,pharmaceuticals,slow sand filtration,spectral measurements,trickling filter,POWDERED ACTIVATED CARBON,CONTROL PARAMETER,OZONE,EFFICIENCY,OXIDATION,PHARMACEUTICALS,BIODEGRADATION,CIPROFLOXACIN,ECOTOXICITY,WASTEWATERS},
  language     = {eng},
  number       = {1},
  pages        = {236--246},
  title        = {Enhanced treatment of secondary municipal wastewater effluent : comparing (biological) filtration and ozonation in view of micropollutant removal, unselective effluent toxicity, and the potential for real-time control},
  url          = {http://dx.doi.org/10.2166/wst.2017.207},
  volume       = {76},
  year         = {2017},
}

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