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Ozone: Science & Engineering
The Journal of the International Ozone Association
Volume 30, 2008 - Issue 4
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Original Articles

Ozonation Combined with Electrolysis of Night Soil Treated by Biological Nitrification-Denitrification Process

Naoyuki Kishimoto Department of Environmental Solution Technology, Facility of Science & Technology, Ryukoku University, Otsu, JapanCorrespondence[email protected]
,
Tomoyuki Matsutani Department of Environmental Solution Technology, Facility of Science & Technology, Ryukoku University, Otsu, Japan
,
Yuuji Yasuda Mitsubishi Heavy Industries, Ltd., Yokohama, Japan; Mitsubishi Jyuko Kankyo Engineering, Ltd., Yokohama, Japan
,
Masamichi Asano Mitsubishi Heavy Industries, Ltd., Yokohama, Japan
&
Hiroshi Mizutani Mitsubishi Heavy Industries, Ltd., Yokohama, Japan; Mitsubishi Jyuko Kankyo Engineering, Ltd., Yokohama, Japan
Pages 282-289 | Received 18 Nov 2007, Accepted 24 Mar 2008, Published online: 24 Jul 2008
 
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Abstract

Ozonation combined with electrolysis with a two- compartment electrolytic flow cell was developed and its applicability to ammonia nitrogen and total organic carbon (TOC) removal in effluent from a night soil treatment facility was discussed. The developed flow cell with an anion exchanged membrane as a separator was effective to remove by electrochemically generated chlorine and TOC by hydroxyl radical generated via cathodic reduction of ozone. Total nitrogen (TN) removal efficiency under the optimal condition reached to 75% and TOC removal efficiency maximally reached to 47%.

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