COD Removal from Actual Coking Wastewater in a Granular Bio-Film Reactor

Abstract:

To strengthen the COD removal from actual coking wastewater, a lab-scale granular bio-film reactor was continuously operated at three stages for about 9 months: anaerobic vs. micro-aerobic (over 2 months), with and without supplement of bicarbonate (over 2 months), and with and without supplement of diatomite (about 4 months).Compared with anaerobic condition, the micro-aerobic operation could strengthen COD removal in the actual coking wastewater and increase COD removal efficiency from 21.4% to 36.4%. At micro-aerobic operation conditions, the supplement of 3g.L_influent^-1 bicarbonate could distinctly increase COD average removal efficiency from 32.9% to 65.3%, and the supplement of 6g·L^-1·d^-1 diatomite could significantly increase COD average removal efficiency from 33.1% to 78.1%. The supplement of bicarbonate or diatomite for the granular bio-film reactor must be an effective way for the treatment of actual coking wastewater.

• Periodical: Advanced Materials Research (Volume 777)
• Pages: 286-290
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.777.286
• Online since: September 2013
• Authors: Chun Juan Dong, Zhao Yu Geng, Mei Rong Feng
• Keywords: Actual Coking Wastewater, Anaerobic, Bicarbonate, Diatomite, Granular Bio-Film Reactor, Micro-Aerobic

References

[1] Kim Y.M., Park, D., Lee, D.S., et al. Inhibitory effects of toxic compounds on nitrification process for cokes wastewater treatment. J. Hazard. Mater. 152(2007): 915-921.

DOI: 10.1016/j.jhazmat.2007.07.065

[2] X.P. Zhu, J.N. Ni, P. Lai. Advanced treatment of biologically pretreated coking wastewater by electrochemical oxidation using boron-doped diamond electrodes. Water Res. 43(2009): 4347-4355.

DOI: 10.1016/j.watres.2009.06.030

[3] Wang,W., Han, H.J., Yuan, M., et al. Enhanced anaerobic biodegradability of real coal gasification wastewater with methanol addition. J. Environ. Sci. 22(2010): 1868-1874.

DOI: 10.1016/s1001-0742(09)60327-2

[4] Kumar, M.S., Vaidya, A.N., Shivaraman, N., et al. Biotreatment of oil-bearing coke-oven wastewater in fixed-film reactor: a viable alternative to activated sludge process. Environ. Eng. Sci. 17 (2000): 221-226.

DOI: 10.1089/10928750050137561

[5] González, G., Herrera, M.G., García M.T., et al. Biodegradation of phenol in a continuous process: comparative study of stirred tank and fluidized-bed bioreactors. Bioresour. Technol. 76(2001): 245-251.

DOI: 10.1016/s0960-8524(00)00092-4

[6] Mari K.H. Winkler, R. K., Wendell O. K., et al. Evaluating the solid retention time of bacteria in flocculent and granular sludge. Water Res. 46(2012): 4973-4980.

DOI: 10.1016/j.watres.2012.06.027

[7] State environmental protection administration of china. Water and wastewater monitoring and analytical methods. Beijing: China Environmental Science Press, (2004).

[8] APHA. Standard Methods for Examination of Water and Wastewater, 20th ed. American Public Health Association, American Water Works Association, Water Environment Federation, Washington, DC, (1998).

DOI: 10.1002/j.1551-8833.1932.tb18153.x

[9] Vázquez, I., Rodríguez, J., Maranon, E., et al. Simultaneous removal of phenol, ammonium and thiocyanate from coke wastewater by aerobic biodegradation. J. Hazard. Master. 137(2006): 1773-1780.

DOI: 10.1016/j.jhazmat.2006.05.018