Screening and Domestication of High Effective Microorganism Used in Oil Containing Wastewater Remediation

Xinyang XU, Xi CHEN, Yindi FAN

.

DOI: 10.4236/jwarp.2009.12019                

Abstract

According to the characteristics of oil containing wastewater, four strains of microorganism, named TA-11, TA-17, HA-9, HD-1, were picked out from the oil contaminated soil and activated sludge of biochemical treatment system of an asphalt plant wastewater in Panjin. They can degrade oil and CODCr in oil containing wastewater. The research result showed that each strain of microorganisms can remove oil and CODCr in oil containing wastewater effectively when the pH value was 7.0, the temperature was 30 degree Celsius, the rotation speed was 140r/min and the inoculation amount was 10%. Especially the highest removal ratio of CODCr was 68% after growth of 64 hours. The removal ratio of CODCr in oil containing wastewater of mixed bacilli was much higher than that of unitary bacilli, and mixing a certain amount of domestic sewage with the oil containing wastewater will also improve the removal rate of CODCr.

Keywords

Oil Containing Wastewater, Screening, Domestication, CODCr, Removal Ratio

Conflicts of Interest

The authors declare no conflicts of interest.

References

[1]	S. B. Hou, X. M. Xuan, “Status of research and application of the oily wastewater treatment technology [J],” Shanghai Chemical Industry, Vol. 9, pp. 11-14, 2003.
[2]	T. Berrin, “Microscopic characterization of oil droplets removed by flocs after coagulation of oil-water emulsions [J],” Journal of Environmental Science and Health, Vol. 37, No. 2, pp. 127-138, 2002.
[3]	A. M. A. Omar, “Recovery of residual emulsifiable oil from wastewater by flotation lubrication science [J],” Water Science Technology, Vol. 14, No. 2, pp. 275-284, 2002.
[4]	D. D. Qian, L. J. Xu, and J. W. Shi, “Study on high-strengh oil-containing wastewater treatment attached yeasts [J],” Energy Environmental Protection, Vol. 23, No. 1, pp. 41-45, 2009.
[5]	G. Q. Liu, J. W. Shen, and C. K. Gao, “Study on treatment oil wastewater by screening high efficicent degradation bacteria of crude oil [J],” Technology of Water Treatment, Vol. 34, No. 10, pp. 26-29, 2008.
[6]	G. Yang, “A Course of microbiology experiment [M],” Science press, pp. 15-25, 2004.
[7]	X. Y. Xu, Y. Zhang, and H. B. Li, “Immobilization process of flavobacterium sp. for bioremediation of contaminated surface water [J],” Journal of Northeastern University: Natural Science, Vol. 8, pp. 783-786, 2005.
[8]	X. Y. Xu, Y. Zhang, and H. B. Li, “Chemical embedding immobilization technique of micrococcus sp. used in contaminated surface water remediation [J],” Journal of Northeastern University: Natural Science, Vol. 1, pp. 1146-1149, 2006.