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CLC number: X703.1

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Received: 2005-05-19

Revision Accepted: 2005-08-09

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Journal of Zhejiang University SCIENCE B 2005 Vol.6 No.11 P.1115~1123

http://doi.org/10.1631/jzus.2005.B1115


Pretreatment of coking wastewater using anaerobic sequencing batch reactor (ASBR)


Author(s):  LI Bing, SUN Ying-lan, LI Yu-ying

Affiliation(s):  Institute of Environmental Science and Engineering, Ocean University of China, Qingdao 266003, China; more

Corresponding email(s):   Lilibing188@sina.com

Key Words:  Anaerobic sequencing batch reactor (ASBR), Coking wastewater, Anaerobic pre-treatment


LI Bing, SUN Ying-lan, LI Yu-ying. Pretreatment of coking wastewater using anaerobic sequencing batch reactor (ASBR)[J]. Journal of Zhejiang University Science B, 2005, 6(11): 1115~1123.

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author="LI Bing, SUN Ying-lan, LI Yu-ying",
journal="Journal of Zhejiang University Science B",
volume="6",
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pages="1115~1123",
year="2005",
publisher="Zhejiang University Press & Springer",
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%T Pretreatment of coking wastewater using anaerobic sequencing batch reactor (ASBR)
%A LI Bing
%A SUN Ying-lan
%A LI Yu-ying
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%N 11
%P 1115~1123
%@ 1673-1581
%D 2005
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.2005.B1115

TY - JOUR
T1 - Pretreatment of coking wastewater using anaerobic sequencing batch reactor (ASBR)
A1 - LI Bing
A1 - SUN Ying-lan
A1 - LI Yu-ying
J0 - Journal of Zhejiang University Science B
VL - 6
IS - 11
SP - 1115
EP - 1123
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Y1 - 2005
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/jzus.2005.B1115


Abstract: 
A laboratory-scale anaerobic sequencing batch reactor (ASBR) was used to pretreat coking wastewater. Inoculated anaerobic granular biomass was acclimated for 225 d to the coking wastewater, and then the biochemical methane potential (BMP) of the coking wastewater in the acclimated granular biomass was measured. At the same time, some fundamental technological factors, such as the filling time and the reacting time ratio (tf/tr), the mixing intensity and the intermittent mixing mode, that affect anaerobic pretreatment of coking wastewater with ASBR, were evaluated through orthogonal tests. The COD removal efficiency reached 38%~50% in the stable operation period with the organic loading rate of 0.37~0.54 kg COD/(m3·d) at the optimum conditions of tf/tr, the mixing intensity and the intermittent mixing mode. In addition, the biodegradability of coking wastewater distinctly increased after the pretreatment using ASBR. At the end of the experiment, the microorganism forms on the granulated sludge in the ASBR were observed using SEM (scanning electron microscope) and fluoroscope. The results showed that the dominant microorganism on the granular sludge was Methanosaeta instead of Methanosarcina dominated on the inoculated sludge.

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

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