Effect of pH on microbubble ozonation treatment of dyeing wastewater - Details

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Abstract：

The　performance　of　wastewater　ozonation　treatment　could　be　improved　when　microbubble　technology　was　applied.　The　pH　value　is　a　crucial　factor　for　ozonation　treatment.　The　microbubble　ozonation　treatment　of　acid　red　3R　wastewater　was　investigated　under　different　initial　pH.　The　results　indicated　the　significant　influence　of　pH　on　ozone　decomposition　in　microbubble　ozonation.　The　ozone　decomposition　under　strong　acid　and　alkaline　conditions　was　faster　than　that　under　neutral　condition.　The　decoloration　rate　and　TOC　removal　rate　in　microbubble　ozonation　treatment　of　acid　red　3R　wastewater　could　be　accelerated　significantly　under　acid　and　alkaline　conditions,　compared　with　these　under　neutral　condition.　The　TOC　removal　efficiency　could　reach　up　to　83.1%　under　acid　condition　and　its　TOC　removal　rate　was　about　twice　as　high　as　that　under　neutral　condition.　In　addition,　the　ratios　of　TOC　removed　to　ozone　consumed　under　acid,　alkaline　and　neutral　conditions　were　0.0372,　0.0298　and　0.0180　mg/mg,　respectively.　These　indicated　that　the　strongest　oxidative　activity　in　microbubble　ozonation　could　be　achieved　under　acid　condition.　The　ozone　utilization　efficiencies　were　higher　than　99%　in　the　microbubble　ozonation　treatment　under　different　initial　pH.　©　2016,　Science　Press.　All　right　reserved.

Keyword：

Acid red 3R; Microbubble; Ozonation; PH

Author Community：

[ 1 ] [Zhang, J.]Pollution Prevention Biotechnology Laboratory of Hebei Province, School of Environmental Science and Engineering, Hebei University of Science and Technology, Shijiazhuang, 050018, China
[ 2 ] [Zhang, J.]College of Architecture and Civil Engineering, Beijing University of Technology, Beijing, 100022, China
[ 3 ] [Du, Y.]Pollution Prevention Biotechnology Laboratory of Hebei Province, School of Environmental Science and Engineering, Hebei University of Science and Technology, Shijiazhuang, 050018, China
[ 4 ] [Ru, X.]Pollution Prevention Biotechnology Laboratory of Hebei Province, School of Environmental Science and Engineering, Hebei University of Science and Technology, Shijiazhuang, 050018, China
[ 5 ] [Liu, C.]Pollution Prevention Biotechnology Laboratory of Hebei Province, School of Environmental Science and Engineering, Hebei University of Science and Technology, Shijiazhuang, 050018, China
[ 6 ] [Yang, J.]Pollution Prevention Biotechnology Laboratory of Hebei Province, School of Environmental Science and Engineering, Hebei University of Science and Technology, Shijiazhuang, 050018, China
[ 7 ] [Zhang, L.]Pollution Prevention Biotechnology Laboratory of Hebei Province, School of Environmental Science and Engineering, Hebei University of Science and Technology, Shijiazhuang, 050018, China
[ 8 ] [Liu, X.]Pollution Prevention Biotechnology Laboratory of Hebei Province, School of Environmental Science and Engineering, Hebei University of Science and Technology, Shijiazhuang, 050018, China

Reprint Author's Address：

刘超
[Liu, C.]Pollution Prevention Biotechnology Laboratory of Hebei Province, School of Environmental Science and Engineering, Hebei University of Science and TechnologyChina

Email：

liuchun@hebust.edu.cn

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Source ：

Chinese Journal of Environmental Engineering

ISSN： 1673-9108

Year： 2016

Issue： 2

Volume： 10

Page： 742-748

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