CLC number: X703.1
On-line Access:
Received: 2005-05-19
Revision Accepted: 2005-08-09
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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.
@article{title="Pretreatment of coking wastewater using anaerobic sequencing batch reactor (ASBR)",
author="LI Bing, SUN Ying-lan, LI Yu-ying",
journal="Journal of Zhejiang University Science B",
volume="6",
number="11",
pages="1115-1123",
year="2005",
publisher="Zhejiang University Press & Springer",
doi="10.1631/jzus.2005.B1115"
}
%0 Journal Article
%T Pretreatment of coking wastewater using anaerobic sequencing batch reactor (ASBR)
%A LI Bing
%A SUN Ying-lan
%A LI Yu-ying
%J Journal of Zhejiang University SCIENCE B
%V 6
%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
%@ 1673-1581
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.
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