Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.14279/1023
Title: Evaluation of Pretreatments for Inhibiting Bromate Formation During Ozonation
Authors: Andersen, Henrik Rasmus 
Antoniou, Maria G. 
Major Field of Science: Natural Sciences
Field Category: Environmental Engineering
Keywords: Bromate;Chlorine;Ozone;Carbamazepine;Ammonia
Issue Date: 22-Nov-2012
Source: Environmental Technology, 2012, vol. 33, no. 15, pp. 1747-1753
Volume: 33
Issue: 15
Start page: 1747
End page: 1753
Journal: Environmental Technology 
Abstract: This study compared several pretreatment methods for inhibiting BrO−3 formation during ozonation of tap water, fromtheDTU (Technical University of Denmark) campus, including H2O2 addition (peroxone), pH depression, and NH+4 and Cl2/NH+4 addition. At the same time, the inhibition of atrazine and carbamazepine removal was evaluated for each pretreatment. The required delivered O3 dose to achieve 90% removal of atrazine in the tap water from the DTU campus was 3.5 mg/L, which produced 130–170μg/L BrO−3 . Peroxone did not reduce the required O3 dose for contaminant removal; however, it limited BrO−3 formation to below the drinking water limit of 10μg/L. Depression of solution pH to 6.0, reduced BrO−3 formation to half, but it was still well above the water limit. Pretreatment with NH+4 also reduced BrO−3 formation by approximately 50%, though it reduced atrazine degradation to 65%. Pretreatment with Cl2/NH+4 reduced BrO−3 formation close to the 10μg/L limit; however, atrazine removal did not exceed 75%. Carbamazepine was completely removed under all the tested experimental conditions with the 3.5 mg/L O3 dose.
URI: https://hdl.handle.net/20.500.14279/1023
ISSN: 1479487X
DOI: 10.1080/09593330.2011.644586
Rights: © 2012 Taylor & Francis
Type: Article
Affiliation : Technical University of Denmark 
Publication Type: Peer Reviewed
Appears in Collections:Άρθρα/Articles

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