Synergistic effects of combining ozonation, ceramic membrane filtration and biologically active carbon filtration for wastewater reclamation

Kai Zhang, Zheng hua Zhang, Hao Wang, Xiao mao Wang, Xi hui Zhang, Yuefeng F. Xie

Research output: Contribution to journalArticle

Abstract

In this study, we proposed to apply an integrated process which is comprised of in situ ozonation, ceramic membrane filtration (CMF) and biologically active carbon (BAC) filtration to wastewater reclamation for indirect potable reuse purpose. A pilot-scale (20 m3/d) experiment had been run for ten months to validate the prospect of the process in terms of treatment performance and operational stability. Results showed that the in situ O3 + CMF + BAC process performed well in pollutant removal, with chemical oxygen demand, ammonia, nitrate nitrogen, total phosphorus and turbidity levels in the treated water being 5.1 ± 0.9, 0.05 ± 0.01, 10.5 ± 0.8, <0.06 mg/L, and <0.10 NTU, respectively. Most detected trace organic compounds were degraded by>96%. This study demonstrated that synergistic effects existed in the in situ O3 + CMF + BAC process. Compared to pre-ozonation, in situ ozonation in the membrane tank was more effective in controlling membrane fouling (maintaining operational stability) and in degrading organic pollutants, which could be attributed to the higher residual ozone concentration in the tank. Because of the removal of particulate matter by CMF, water head loss of the BAC filter increased slowly and prolonged the backwashing interval to 30 days. BAC filtration was also effective in removing ammonia and N-nitrosodimethylamine from the ozonated water.

Original languageEnglish (US)
Article number121091
JournalJournal of Hazardous Materials
Volume382
DOIs
StatePublished - Jan 15 2020

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Wastewater reclamation
Ceramic membranes
Ozonization
Ceramics
Waste Water
ceramics
Carbon
membrane
wastewater
Membranes
carbon
Ammonia
Water filtration
Water
Dimethylnitrosamine
ammonia
Membrane fouling
Particulate Matter
Organic pollutants
Ozone

All Science Journal Classification (ASJC) codes

  • Environmental Engineering
  • Environmental Chemistry
  • Waste Management and Disposal
  • Pollution
  • Health, Toxicology and Mutagenesis

Cite this

@article{591b9b9339734074886d4f36b48690ec,
title = "Synergistic effects of combining ozonation, ceramic membrane filtration and biologically active carbon filtration for wastewater reclamation",
abstract = "In this study, we proposed to apply an integrated process which is comprised of in situ ozonation, ceramic membrane filtration (CMF) and biologically active carbon (BAC) filtration to wastewater reclamation for indirect potable reuse purpose. A pilot-scale (20 m3/d) experiment had been run for ten months to validate the prospect of the process in terms of treatment performance and operational stability. Results showed that the in situ O3 + CMF + BAC process performed well in pollutant removal, with chemical oxygen demand, ammonia, nitrate nitrogen, total phosphorus and turbidity levels in the treated water being 5.1 ± 0.9, 0.05 ± 0.01, 10.5 ± 0.8, <0.06 mg/L, and <0.10 NTU, respectively. Most detected trace organic compounds were degraded by>96{\%}. This study demonstrated that synergistic effects existed in the in situ O3 + CMF + BAC process. Compared to pre-ozonation, in situ ozonation in the membrane tank was more effective in controlling membrane fouling (maintaining operational stability) and in degrading organic pollutants, which could be attributed to the higher residual ozone concentration in the tank. Because of the removal of particulate matter by CMF, water head loss of the BAC filter increased slowly and prolonged the backwashing interval to 30 days. BAC filtration was also effective in removing ammonia and N-nitrosodimethylamine from the ozonated water.",
author = "Kai Zhang and Zhang, {Zheng hua} and Hao Wang and Wang, {Xiao mao} and Zhang, {Xi hui} and Xie, {Yuefeng F.}",
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Synergistic effects of combining ozonation, ceramic membrane filtration and biologically active carbon filtration for wastewater reclamation. / Zhang, Kai; Zhang, Zheng hua; Wang, Hao; Wang, Xiao mao; Zhang, Xi hui; Xie, Yuefeng F.

In: Journal of Hazardous Materials, Vol. 382, 121091, 15.01.2020.

Research output: Contribution to journalArticle

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AU - Zhang, Kai

AU - Zhang, Zheng hua

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AU - Zhang, Xi hui

AU - Xie, Yuefeng F.

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