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Ozone/peroxide advanced oxidation in combination with biofiltration for taste and odour control and organics removal.
Chemosphere. 2018 Dec; 212:272-281.C

Abstract

The objective of this pilot-scale study was to investigate the effectiveness of incorporating ozone (O3) and advanced oxidation (hydrogen peroxide/ozone: H2O2/O3) in combination with biofiltration for taste and odour control, organic carbon removal, and disinfection byproduct (DBP) precursor reduction. Implementation of O3 and H2O2/O3 with and without biofiltration was investigated at pilot-scale in terms of geosmin, 2-methylisoborneol (MIB), and DBP precursor removal efficiency. Two media types (granular activated carbon and anthracite) were compared in conjunction with investigating the impact of pre-oxidation with O3 (2 mg/L) and varying H2O2/O3 mass ratios (0.1, 0.2, 0.35, and 0.5 mg/mg). When O3 preceded biologically active carbon (BAC) or biologically active anthracite, geosmin removals of 80% and 81%, respectively, were observed at 10 °C; this increased to 89% and 90%, respectively, at 16 °C. Optimal MIB removal (67%) was achieved with 0.1 H2O2/O3 (mg/mg) in combination with BAC at 16 °C. In general, geosmin proved to be more amenable to biodegradation than MIB. BAC without pre-oxidation removed 87% geosmin and 85% MIB, at 22 °C. MIB removals decreased to 60% and 46%, respectively at 16 °C and 10 °C. The application of 0.2 H2O2/O3 (mg/mg) prior to BAC provided treatment which effectively removed geosmin and MIB. However, in terms of DBP precursor reduction, there was no beneficial impact of H2O2 addition on trihalomethane or haloacetic acid formation potentials.

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Publisher Full Text (DOI)

Authors+Show Affiliations

Beniwal D
Department of Civil Engineering, University of Toronto, 35 St. George Street, Toronto, Ontario, M5S 1A4, Canada.
Taylor-Edmonds L
Department of Civil Engineering, University of Toronto, 35 St. George Street, Toronto, Ontario, M5S 1A4, Canada. Electronic address: liz.taylor.edmonds@utoronto.ca.
Armour J
Peterborough Water Treatment Plant, 1230 Water Street North, Peterborough, Ontario, K9H 7G4, Canada.
Andrews RC
Department of Civil Engineering, University of Toronto, 35 St. George Street, Toronto, Ontario, M5S 1A4, Canada.

MeSH

Biodegradation, EnvironmentalFiltrationHydrogen PeroxideOdorantsOrganic ChemicalsOxidation-ReductionOzoneTasteWater Pollutants, ChemicalWater Purification

Pub Type(s)

Journal Article

Language

eng

PubMed ID

30145419

Citation

Beniwal, Divyam, et al. "Ozone/peroxide Advanced Oxidation in Combination With Biofiltration for Taste and Odour Control and Organics Removal." Chemosphere, vol. 212, 2018, pp. 272-281.
Beniwal D, Taylor-Edmonds L, Armour J, et al. Ozone/peroxide advanced oxidation in combination with biofiltration for taste and odour control and organics removal. Chemosphere. 2018;212:272-281.
Beniwal, D., Taylor-Edmonds, L., Armour, J., & Andrews, R. C. (2018). Ozone/peroxide advanced oxidation in combination with biofiltration for taste and odour control and organics removal. Chemosphere, 212, 272-281. https://doi.org/10.1016/j.chemosphere.2018.08.015
Beniwal D, et al. Ozone/peroxide Advanced Oxidation in Combination With Biofiltration for Taste and Odour Control and Organics Removal. Chemosphere. 2018;212:272-281. PubMed PMID: 30145419.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Ozone/peroxide advanced oxidation in combination with biofiltration for taste and odour control and organics removal. AU - Beniwal,Divyam, AU - Taylor-Edmonds,Liz, AU - Armour,John, AU - Andrews,Robert C, Y1 - 2018/08/14/ PY - 2018/02/05/received PY - 2018/08/02/revised PY - 2018/08/04/accepted PY - 2018/8/27/pubmed PY - 2018/11/9/medline PY - 2018/8/27/entrez KW - Biological filtration KW - Disinfection byproducts KW - Drinking water treatment KW - Hydrogen peroxide/ozone (H(2)O(2)/O(3)) advanced oxidation KW - Ozone (O(3)) KW - Taste and odour SP - 272 EP - 281 JF - Chemosphere JO - Chemosphere VL - 212 N2 - The objective of this pilot-scale study was to investigate the effectiveness of incorporating ozone (O3) and advanced oxidation (hydrogen peroxide/ozone: H2O2/O3) in combination with biofiltration for taste and odour control, organic carbon removal, and disinfection byproduct (DBP) precursor reduction. Implementation of O3 and H2O2/O3 with and without biofiltration was investigated at pilot-scale in terms of geosmin, 2-methylisoborneol (MIB), and DBP precursor removal efficiency. Two media types (granular activated carbon and anthracite) were compared in conjunction with investigating the impact of pre-oxidation with O3 (2 mg/L) and varying H2O2/O3 mass ratios (0.1, 0.2, 0.35, and 0.5 mg/mg). When O3 preceded biologically active carbon (BAC) or biologically active anthracite, geosmin removals of 80% and 81%, respectively, were observed at 10 °C; this increased to 89% and 90%, respectively, at 16 °C. Optimal MIB removal (67%) was achieved with 0.1 H2O2/O3 (mg/mg) in combination with BAC at 16 °C. In general, geosmin proved to be more amenable to biodegradation than MIB. BAC without pre-oxidation removed 87% geosmin and 85% MIB, at 22 °C. MIB removals decreased to 60% and 46%, respectively at 16 °C and 10 °C. The application of 0.2 H2O2/O3 (mg/mg) prior to BAC provided treatment which effectively removed geosmin and MIB. However, in terms of DBP precursor reduction, there was no beneficial impact of H2O2 addition on trihalomethane or haloacetic acid formation potentials. SN - 1879-1298 UR - https://www.unboundmedicine.com/medline/citation/30145419/Ozone/peroxide_advanced_oxidation_in_combination_with_biofiltration_for_taste_and_odour_control_and_organics_removal_ DB - PRIME DP - Unbound Medicine ER -