Treatment of Drilling Wastewater by Combined Coagulation-Ultraviolet/Fenton-Pressurized Biological Processes
Publication: Journal of Environmental Engineering
Volume 136, Issue 3
Abstract
An integrated technique containing coagulation, ultraviolet/Fenton oxidation, and pressurized biological processes was provided for the treatment of wastewater generated from drilling operation where sulfonated muds were used. Ultraviolet/Fenton oxidation process was used to improve biodegradability of effluent after coagulation [assessed through a ratio of biological oxygen demand to chemical oxygen demand (COD) (B/C) index]. Pressurized biological experiments were used to further remove COD so as to meet the wastewater discharge standard. The results showed that coagulation pretreatment could help remove most of CODs (70–80%) in drilling wastewater. A 57% reduction in COD was obtained in the ultraviolet/Fenton oxidation process with 0.8 (in 30 min), and the biodegradability was significantly improved (B/C was increased from 0.03 to 0.47). The pressurized biological process could help speed up the reaction process with a saved aeration time of 66.7% under a system pressure of 0.2 MPa (in comparison with the condition of a normal pressure). The overall COD removal efficiency was about 95% and the COD level in the final effluent was less than 100 mg/L, which satisfied the wastewater discharge standard.
Get full access to this article
View all available purchase options and get full access to this article.
Acknowledgments
This research was supported by the China National Petroleum Corporation (CNPC).
References
Berktay, A. (1998). “Properties of sludge produced from the pressurized wastewater treatment process.” Turk. J. Eng. Environ. Sci., 22(5), 377–385.
Çakmakce, M., Kayaalp, N., and Koyuncu, I. (2008). “Desalination of produced water from oil production fields by membrane processes.” Desalination, 222(1–3), 176–186.
Crittenden, J. C., Hu, S., Hand, D. W., and Green, S. A. (1999). “A kinetic model for /UV process in a completely mixed batch reactor.” Water Res., 33(10), 2315–2328.
Fang, F., Jin, Z. F., Pan, Z. Y., Liu, Y. X., and Lin, C. M. (2006). “Treatment of organic intermediate wastewater by pressurized activated sludge process.” Chin. J. Zhejiang Univ. of Technol., 34(4), 381–385.
Faust, B. C., and Hoigne, J. (1990). “Photolysis of Fe(III)—Hydroxy complexes as sources of OH radicals in clouds, fog and rain.” Atmos. Environ., 24A(1), 79–89.
Jing, M. X., and Zhang, Q. (1995). “Quickly determining the sulfide concentration of three-sulphonate drilling fluid by spectrophotometry.” Chin. J. Natural Gas Industry, 15(1), 40–44.
Kang, Y. W., and Hwang, K. Y. (2000). “Effects of reaction conditions on the oxidation efficiency in the Fenton process.” Water Res., 34(10), 2786–2790.
Kinigoma, B. S. (2001). “Effect of drilling fluid additives on the Niger delta environment: A case study of the Soku oil fields.” J. Appl. Sci. Environ. Manage., 5(1), 57–61.
Kusic, H., Koprivanac, N., Bozic, A. L., and Selanec, I. (2006). “Photo-assisted Fenton type processes for the degradation of phenol: A kinetic study.” J. Hazard. Mater., 136(3), 632–644.
Lü, R. H., and Jiang, W. Y. (2002). “Treatment of drilling wastewater correlated with three-sulfonated mud system by coagulation-adsorption process.” Chin. J. Environ. Eng. (Supplement), 3–5.
Lü, R. H., Mu, B., Zhang, H. Y., and Guo, S. H. (2008). “Treatment of drilling wastewater using a weakly basic resin.” Chin. J. Petrol. Sci., 5(3), 275–279.
Ma, X. P., and Liu, X. J. (2001). “Applied present situation of coagulants used for oil field sewage disposal and its future development tendencies.” Chin. J. Drilling Prod. Technol., 24(1), 79–81.
Peng, J. H., Mo, Z. P., and Li, X. D. (2008). “Improvement of biodegradability of drilling wastewater pretreated by Fenton's reagent.” Chin. J. Appl. Environ. Biol., 14(2), 265–269.
Su, H., Bai, C. Z., and Yan, G. P. (1998). “Research on the treatment of ethylamine wastewater by pressurized bio-oxidation process.” Chin. J. Environ. Sci., 19(6), 76–78.
Trujillo, D., Font, X., and Sanchez, A. (2006). “Use of Fenton reaction for the treatment of leachate from composting of different wastes.” J. Hazard. Mater., 138(1), 201–204.
Wang, Y. M. (1996). “Research on treatment of drilling sewage in oil fields.” Chin. J. Environ. Protection Oil & Gas Fields, 6(3), 26–30.
Wang, Y. M., Yang, M., Zhang, J., Zhang, Y., and Gao, M. C. (2004). “Improvement of biodegradability of oil field drilling wastewater using ozone.” Ozone: Sci. Eng., 26(3), 309–315.
Zeng, K. M., Xia, S. L., Zhu, J. H., Yu, Q. Y., and Lei, H. (2002). “Treatment of gas well drilling wastewater by modified poly-aluminum chloride.” Chin. J. Specialty Petrochem., 5, 20–22.
Zhang, H. Y., Lu, R. H., and Guo, S. H. (2007). “Treatment of drilling wastewater correlated with three-sulfonated mud system by coagulation-ozone oxidation process.” Chin. J. Process Eng., 7(4), 718–722.
Information & Authors
Information
Published In
Copyright
© 2010 ASCE.
History
Received: Dec 25, 2008
Accepted: Aug 20, 2009
Published online: Aug 24, 2009
Published in print: Mar 2010
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.