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CLC number: X7

On-line Access: 2010-03-10

Received: 2009-09-16

Revision Accepted: 2009-12-25

Crosschecked: 2010-01-27

Cited: 9

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Journal of Zhejiang University SCIENCE B 2010 Vol.11 No.3 P.177-189


Catalytic ozonation-biological coupled processes for the treatment of industrial wastewater containing refractory chlorinated nitroaromatic compounds

Author(s):  Bing-zhi Li, Xiang-yang Xu, Liang Zhu

Affiliation(s):  Department of Environmental Engineering, College of Environmental and Resource Sciences, Zhejiang University, Hangzhou 310029, China

Corresponding email(s):   xuxy@zju.edu.cn

Key Words:  Industrial wastewater, Catalytic ozonation, Sequencing batch reactor, Chlorinated nitroaromatic compounds

Bing-zhi Li, Xiang-yang Xu, Liang Zhu. Catalytic ozonation-biological coupled processes for the treatment of industrial wastewater containing refractory chlorinated nitroaromatic compounds[J]. Journal of Zhejiang University Science B, 2010, 11(3): 177-189.

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author="Bing-zhi Li, Xiang-yang Xu, Liang Zhu",
journal="Journal of Zhejiang University Science B",
publisher="Zhejiang University Press & Springer",

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%T Catalytic ozonation-biological coupled processes for the treatment of industrial wastewater containing refractory chlorinated nitroaromatic compounds
%A Bing-zhi Li
%A Xiang-yang Xu
%A Liang Zhu
%J Journal of Zhejiang University SCIENCE B
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%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.B0900291

T1 - Catalytic ozonation-biological coupled processes for the treatment of industrial wastewater containing refractory chlorinated nitroaromatic compounds
A1 - Bing-zhi Li
A1 - Xiang-yang Xu
A1 - Liang Zhu
J0 - Journal of Zhejiang University Science B
VL - 11
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SP - 177
EP - 189
%@ 1673-1581
Y1 - 2010
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/jzus.B0900291

A treatability study of industrial wastewater containing chlorinated nitroaromatic compounds (CNACs) by a catalytic ozonation process (COP) with a modified Mn/Co ceramic catalyst and an aerobic sequencing batch reactor (SBR) was investigated. A preliminary attempt to treat the diluted wastewater with a single SBR resulted in ineffective removal of the color, ammonia, total organic carbon (TOC) and chemical oxygen demand (COD). Next, COP was applied as a pretreatment in order to obtain a bio-compatible wastewater for SBR treatment in a second step. The effectiveness of the COP pretreatment was assessed by evaluating wastewater biodegradability enhancement (the ratio of biology oxygen demand after 5 d (BOD5) to COD), as well as monitoring the evolution of TOC, carbon oxidation state (COS), average oxidation state (AOS), color, and major pollutant concentrations with reaction time. In the COP, the catalyst preserved its catalytic properties even after 70 reuse cycles, exhibiting good durability and stability. The performance of SBR to treat COP effluent was also examined. At an organic loading rate of 2.0 kg COD/(m·d), with hydraulic retention time (HRT)=10 h and temperature (30±2) °C, the average removal efficiencies of NH3-N, COD, BOD5, TOC, and color in a coupled COP/SBR process were about 80%, 95.8%, 93.8%, 97.6% and 99.3%, respectively, with average effluent concentrations of 10 mg/L, 128 mg/L, 27.5 mg/L, 25.0 mg/L, and 20 multiples, respectively, which were all consistent with the national standards for secondary discharge of industrial wastewater into a public sewerage system (GB 8978-1996). The results indicated that the coupling of COP with a biological process was proved to be a technically and economically effective method for treating industrial wastewater containing recalcitrant CNACs.

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article


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RemaThankappan@Central Leather Research Adyar ChennaiIndiaInstitute<ranirema@gmail.com>

2011-01-20 11:56:19

Dear sir/Madam

I would like to get the reprint Catalytic ozonation-biological coupled processes for the treatment of industrial wastewater containing refractory chlorinated nitroaromatic compounds by Bing-zhi Li Xiang-yang Xu Liang Zhu.

Thanking you


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