Treatment of Coking Wastewater by a Submerged Membrane Bioreactor with Suspended Carriers

Abstract:

A renovated hybrid membrane bioreactor (HMBR) was investigated for its capability of coking wastewater treatment. The HMBR combined biofilm process and membrane filtration process. The system was efficient in degrading COD and phenol in coking wastewater and controlling membrane. It was found that the coking wastewater could be effectively treated with 88.6% of COD removal efficiency and 98.3% of phenol removal efficiency at hydraulic retention time (HRT) of 16 h. The removal efficiency of COD and phenol decreased gradually down to 83.2% and 97.7% when HRT decreased to 8 h. The long term experiments indicated that the degree of membrane fouling for HMBR was far lower than that for MBR. The scrubbing effect of suspended carrier in HMBR was observed to be capable of reducing the cake fouling of membrane. The operation time of HMBR was 8.4-fold longer than that with MBR.

• Periodical: Advanced Materials Research (Volumes 1065-1069)
• Pages: 3235-3238
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1065-1069.3235
• Online since: December 2014
• Authors: Qi Yuan Gu*, Ming Yue Li
• Keywords: Coking Wastewater, Hybrid Membrane Bioreactor, Membrane Fouling, Suspended Carrier

References

[1] H.Q. Li, H.J. Han and M.A. Du: Bioresour. Technol. Vol. 102(2011), p.4667.

[2] H. Xia, C.H. Wei and K.C. Yu: J. Membrane Sci. Vol. 309(2008), p.7.

[3] J.Y. Jing, J. Feng, W.Y. Li and Y. Xu: Korean J. Chem. Eng. Vol. 17(2009), p.167.

[4] K. Chon, J. Cho and H.K. Shon: Bioresour. Technol. Vol. 120 (2013), p.239.

[5] F. Fang, H.J. Han, Q. Zhen, C. Xu and L. Zhang: Bioresour. Technol. Vol. 150 (2013), p.314.

[6] A. Eldyasti, G. Nakhla and J. Zhu: Chem. Eng. J. Vol. 232 (2013), p.183.

[7] Y.S. Jeong and J.S. Chung: Process Biochem. Vol. 41 (2006), p.1141.

[8] Z. Wang, X. Xu, J. Chen and F. Yang: J. Environ. Chem. Eng. Vol. 1(2013), p, 899.