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Conflict of Interest: In relation to this article, we declare that there is no conflict of interest.

Publication history: Received July 21, 2008
Accepted October 15, 2008

This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Removal of COD from coking-plant wastewater in the moving-bed biofilm sequencing batch reactor

JieYing Jing Jie Feng WenYing Li^† Ying Xu

Key Laboratory of Coal Science and Technology of Shanxi Province and Ministry of Education, Taiyuan University of Technology, Shanxi 030024, P.R.China

Korean Journal of Chemical Engineering, March 2009, 26(2), 564-568(5), 10.1007/s11814-009-0096-8

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Abstract

The objective of this paper is to investigate COD removal efficiency of the coking-plant wastewater by applying the moving-bed biofilm sequencing batch reactor (MBBSBR). The operation is simple and 30% WD-F10-4 BioM^(TM) were packed as carrier materials. It was found that the coking-plant wastewater could be effectively treated with 92.9% of COD removal efficiency at a low organic loading rate (OLR) of 0.449 kgCOD·m^(-3)·d^(-1). The removal efficiency_x000D_ decreased gradually down to 70.9% when OLR increased to 2.628 kgCOD·m^(-3)·d^(-1). The system has strong tolerance to organic shock loading in this experiment. The COD removal results in the blank experiments of biofilm and sludge showed that the attached biofilm has higher activity than suspended sludge and contributes about 60% to the COD removal.

Keywords

COD Removal Coking-plant Wastewater Moving-bed Biofilm Shock Loading Microorganism Activity

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