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CLC number: X506

On-line Access: 2011-05-09

Received: 2010-06-30

Revision Accepted: 2010-11-26

Crosschecked: 2011-04-20

Cited: 5

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Citations:  Bibtex RefMan EndNote GB/T7714

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Journal of Zhejiang University SCIENCE A 2011 Vol.12 No.5 P.390-398


Water quality improvement of a lagoon containing mixed chemical industrial wastewater by micro-electrolysis-contact oxidization

Author(s):  Ya-fei Zhou, Mao Liu, Qiong Wu

Affiliation(s):  College of Environmental Science and Engineering, Nankai University, Tianjin 300071, China; more

Corresponding email(s):   nkzhouyf@gmail.com

Key Words:  Memetic algorithm (MA), Neural network (NN) learning, Back propagation (BP), Extremal optimization (EO), Levenberg-Marquardt (LM) gradient search, Basic oxygen furnace (BOF)

Ya-fei Zhou, Mao Liu, Qiong Wu. Water quality improvement of a lagoon containing mixed chemical industrial wastewater by micro-electrolysis-contact oxidization[J]. Journal of Zhejiang University Science A, 2011, 12(5): 390-398.

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journal="Journal of Zhejiang University Science A",
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%T Water quality improvement of a lagoon containing mixed chemical industrial wastewater by micro-electrolysis-contact oxidization
%A Ya-fei Zhou
%A Mao Liu
%A Qiong Wu
%J Journal of Zhejiang University SCIENCE A
%V 12
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%P 390-398
%@ 1673-565X
%D 2011
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.A1000304

T1 - Water quality improvement of a lagoon containing mixed chemical industrial wastewater by micro-electrolysis-contact oxidization
A1 - Ya-fei Zhou
A1 - Mao Liu
A1 - Qiong Wu
J0 - Journal of Zhejiang University Science A
VL - 12
IS - 5
SP - 390
EP - 398
%@ 1673-565X
Y1 - 2011
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/jzus.A1000304

A lagoon in the New Binhai District, a high-speed developing area, Tianjin, China, has long been receiving the mixed chemical industrial wastewater from a chemical industrial park. This lagoon contained complex hazardous substances such as heavy metals and accumulative pollutants which stayed over time with a poor biodegradability. According to the characteristics of wastewater in the lagoon, the micro-electrolysis process was applied to improve the biodegradability before the bioprocess treatment. By the orthogonal experimental study of main factors influencing the efficiency of the treatment method, the best control parameters were obtained, including pH=2.0, a volume ratio of Fe and reaction wastewater of 0.03750, a volume ratio of Fe and the granular activated carbon (GAC) of 2.0, a mixing speed of 200 r/min, and a hydraulic retention time (HRT) of 1.5 h. In the meantime, the removal rate of chemical oxygen demand (COD) was up to 64.6%, and NH4+–N and Pb in the influent were partly removed. After the micro-electrolysis process, the ratio of biochemical oxygen demand (BOD) to COD (B/C ratio) was greater than 0.6, thus providing a favorable basis for bioprocess treatment.

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


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