We investigated a novel wastewater treatment method for the remediation of crude oil refinery effluents with large number of recalcitrant organic compounds. The treatment system consists of an up-flow anaerobic sludge blanket (UASB) reactor and an aerobic packed-bed biofilm reactor (PBBR) in combinatory pattern to increase the efficiency of treatment and to remove polycyclic aromatic hydrocarbons (PAHs) of the wastewater. The mean chemical oxygen demand (COD) removal efficiency in the UASB reactor and PBBR over 118 days of sampling was 68.48% and
38.28%, respectively. The total COD removal efficiency of the system was 81.07%. The GC-MS abundance and area values for each of the substances in the effluent decreased greatly from the corresponding value in the influent. Specifically, the PAHs were totally removed during the treatment process. This study presents a feasible technology for the treatment of refinery effluents.
Schellinkhout A, Osorio E, Long-term experience with the UASB technology for sewage treatment on large scale, in: 7th Int. Symp. on Anaerobic Digestion, The Netherlands, 251, 1994
Zhao C, Effect of Temperature on Biogas Production in Anaerobic Treatment of Domestic Wastewater UASB System in Hammarby Sjostadsverk, Masters Level Degree Project, 2011
Metcalf, Eddy, Wastewater Engineering: Treatment and Reuse, Chapter 10, 4th Ed., McGraw-Hill, New York, 2004
Shim H, Shin E, Yang ST, Adv. Environ. Res., 7, 203, 2002
Trzesicka-Mlynarz D, Ward OP, Can. J. Microbiol., 41, 470, 1995
Stringfellow W, Alvarez Cohen M, Alvarez Cohen L, Water Res., 33, 2535, 1999
APHA, AWWA & WPCF, Standard Methods for the examination of water and wastewater, 18th Ed. American Public Health Association, Washington, D.C., 1992
Maat DZ, Habbets LHA, Pulp and Paper Canada, 88, 410, 1987