Exploration and production (E&P) waste generated by the petroleum industry in Croatia from two central oilfield pits (COPs) was investigated in order to (1) examine materials for waste treatment that can preferentially sorb organic contaminants and, in that way, improve the process of stabilization/solidification (S/S), and (2) find field-acceptable methods to reduce the amount of waste to be treated with S/S or some other method. Composite samples from COP Vinkovci were treated in the laboratory with different materials or with combinations of several materials: (a) Cement, (b) organophilic clay, (c) calcined moler clay, (d) , (e) , (f) moler clay, and (g) moler clay. A sample of E&P waste treated with lime was used for comparison of results. The most successful treatment for the majority of inorganic and organic pollutants was treatment with organophilic clay. Samples treated with organophilic clay release 63 times less total oils, 67 times less mineral oils, 798 times less naphthalene, and 136 times less lead to distilled water than the sample treated with lime. The next most successful material is calcined moler clay. The results clearly show that reduction in hydrocarbon content using some of the field-acceptable methods and detailed chemical analysis of remaining organic and inorganic pollutants must be implemented before selecting the most appropriate method for treatment of technological waste in petroleum industry. A composite sample from COP Žutica was treated in the laboratory using a four-step procedure involving boiling water, condensate, and organophilic clay. Organophilic clay was used because of its ability to sorb hydrophobic pollutants. In the leachate of an E&P waste sample, the lowest values for the majority of inorganic and organic pollutants were observed following the fourth step (treatment with organophilic clay). This is also manifested in the lowest indicator of total discharge (ITD%) values for the fourth treatment step. Considering the concentrations of analyzed parameters in leachates and their ITD% values, the biggest effect for the majority of inorganic and organic pollutants was achieved between the first and the second treatment step. This suggests that treatment with boiling water is the most effective treatment for the majority of inorganic and organic pollutants. Concentrations of benzene, ethylbenzene, toluene, and xylene (BETX) in distilled-water leachate generally increase after each succeeding treatment step. This shows that BETX is added to the E&P waste through condensate addition in the third treatment step.
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June 2008
Research Papers
Improvements in Treatment of Waste From Petroleum Industry in Croatia
Goran Durn,
Goran Durn
University of Zagreb
, Pierottijeva 6, 10000 Zagreb, Croatia
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Nediljka Gaurina-Međimurec,
Nediljka Gaurina-Međimurec
University of Zagreb
, Pierottijeva 6, 10000 Zagreb, Croatia
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Heinz Fröschl,
Heinz Fröschl
Seibersdorf Research
, A-2444 Seibersdorf, Austria
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John A. Veil,
John A. Veil
Argonne National Laboratory
, 955 L’Enfant Plaza, SW, Suite 6000, Washington, DC 20024
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Boris Veronek,
Boris Veronek
INA-Naftaplin
, Šubićeva 29, 10000 Zagreb, Croatia
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Sanja Mesić
Sanja Mesić
INA-Naftaplin
, Šubićeva 29, 10000 Zagreb, Croatia
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Goran Durn
University of Zagreb
, Pierottijeva 6, 10000 Zagreb, Croatia
Nediljka Gaurina-Međimurec
University of Zagreb
, Pierottijeva 6, 10000 Zagreb, Croatia
Heinz Fröschl
Seibersdorf Research
, A-2444 Seibersdorf, Austria
John A. Veil
Argonne National Laboratory
, 955 L’Enfant Plaza, SW, Suite 6000, Washington, DC 20024
Boris Veronek
INA-Naftaplin
, Šubićeva 29, 10000 Zagreb, Croatia
Sanja Mesić
INA-Naftaplin
, Šubićeva 29, 10000 Zagreb, CroatiaJ. Energy Resour. Technol. Jun 2008, 130(2): 022101 (10 pages)
Published Online: May 2, 2008
Article history
Received:
June 19, 2006
Revised:
December 7, 2007
Published:
May 2, 2008
Citation
Durn, G., Gaurina-Međimurec, N., Fröschl, H., Veil, J. A., Veronek, B., and Mesić, S. (May 2, 2008). "Improvements in Treatment of Waste From Petroleum Industry in Croatia." ASME. J. Energy Resour. Technol. June 2008; 130(2): 022101. https://doi.org/10.1115/1.2906112
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