vol15no3pa2

References

[1]Concawe S., The Environmental Impact of Refinery Effluents”, Water Pollution Special Task Force No.8 , (Report No. 5/79).

[2]”Phenol Removal Through Combined Biological & Enzymatic Treatment” By: J.V.Beilaqua & M.C.Cmmarota , Brazilian Journal of Chemical Engineering, Vol.19, No. 02 , App.-Jun. 2002.

[3]Sawyer C.N. and McCarty, P.L., 1977, “Chemistry for Environmental Engineering”, Prentice Hall INC.

[4]Eckenfelder, W.W. Jr., Industrial Water Pollution Control, 2nd ed., McGraw-Hill.

[5]Brochier, 2000, Midland Refinery Dora-Iraq , Report Inspection on 15-17 Aug. 2000.

Tikrit Journal of Engineering Sciences (2008) 15(3) 18-36

Enhancement of Phenol Removal Efficiency in Dora Refinery Wastewater Treatment Plant

Salah F. Sharif
Environmental Researches Center-University of Technology,Iraq.

Abstract

Because the sanctions imposed on Iraq by the United Nations, programmed maintenance and wearing parts replacement has not been performed according to schedules in DORA Refinery Wastewater Unit, which resulted in higher phenol content and BOD5 in effluents disposed to river. The investigations showed that two main reasons were behind this problem: Firstly, increased emissions of hydrocarbons in the complexity of refinery equipment and Secondly, the decreased efficiency of the aerators in the biological. During the last few months, phenol average concentration in the effluent, after biological treatment was found to be between 0.06-0.13 mg/L, while COD was exceeding 110 mg/L after treatment in the same period. Considerable enhancement, has been indicated recently, after the following performances: First: Recycling wastewater from some heat exchangers, and the segregation of low and high strength of wastewaters, Second: Minimizing emissions of hydrocarbons from fluid catalytic cracking and steam cracking, Third: Replacement of driving motors of the aerators in the biological treatment unit. After replacement of these units, a significant decrease in phenol concentration was obtained in purified water (0.03-0.05) mg/L and COD of 60 mg/L before the tertiary treatment. It is concluded that a better quality of effluents has been obtained after a series of emissions control and wastewater treatment unit equipment maintenance performances.

Download Full-Text PDF

Keywords: Waste water, aerator, phenolic compounds

How to cite

TJES: Sharif SF. Enhancement of Phenol Removal Efficiency in Dora Refinery Wastewater Treatment Plant. Tikrit Journal of Eng Sciences 2008;15(3):18-36.
APA: Sharif, S. F. (2008). Enhancement of Phenol Removal Efficiency in Dora Refinery Wastewater Treatment Plant. Tikrit Journal of Eng. Sciences, 15(3), 18-36..