| Issue |
E3S Web Conf.
Volume 161, 2020
International Conference on Efficient Production and Processing (ICEPP-2020)
|
|
|---|---|---|
| Article Number | 01042 | |
| Number of page(s) | 5 | |
| DOI | https://doi.org/10.1051/e3sconf/202016101042 | |
| Published online | 15 April 2020 | |
Treatment of petroleum refinery wastewater by physicochemical methods
1 University of L’Aquila, Department of Industrial and Information Engineering and Economics, 67100 L’Aquila, Italy
2 Voronezh State University of Engineering Technologies, Department of Ecology and Chemical Technology, 39417, Voronezh, Russia
* Corresponding author: svetlana.zueva@graduate.univaq.it
The main objective of this work was to improve the technological scheme of oil refinery wastewater treatment. Replacment of the expensive filter section in a refinery plant by coagulation in order to increase effectiveness of the process at lower cost was investigated. This research has proven that Ca(OH)2 and Al2(SO4)3 were effective in treatment of oil wastewater. Central Composite Design was applied to two factors, the Al2(SO4)3 dosage and pH. Under optimum conditions effect of removal of Turbidity did reach 100 %, Total hydrocarbons 90 % and COD 70 %. Concentration of Total hydrocarbons in wastewater after treatment were below Limits for sewerage. Prevailing mechanism for coagulation was charge neutralization, associated with deposition of positively charged aluminum hydroxide onto negatively charged particles. Applying of cogulation will let significantly reduce operating expenses up to 5,436.35 €/year, at the same efficiency, due to replacing expensive filtration processes with cost of 102,600.00 €/year.
© The Authors, published by EDP Sciences, 2020
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