| Abstract [eng] |
Crude oil is one of the most important energy sources and it is the main raw material for petroleum refinery. Petroleum extraction generates a huge amount of liquid waste which is called produced water. Global amount of petroleum extraction is about 11 million t/d. and the amount of produced water is 34 million t/d. Taking into consideration these current problems the aim of Master thesis is to select optimal sorbent and design the construction of filter in order to reduce hydrocarbons from produced water. Physical methods of purification of produced water and their advantages and disadvantages are described in theoretical part of this work, which is based on scientific researches. The most efficient and cost-effective technology was chosen to carry out further investigation of a sorbent. The methodological part of this Master thesis provides with information on methodology applied in the research, it also gives the technological scheme of the pilot plant and describes schematics of experimental set-up. The optimal operating conditions of the filter media were identified in the research part of this work. Filtration rate – 10 m/h, backwash velocity – 13 m/h, backwash flowrate – 20 m3/h, air velocity – 10 m/s, air flowrate – 50 m3/h, the duration of air supply – 3 seconds intervals in every half minute, the duration of regeneration time – 10 min. The highly efficient removal of the filter media was obtained in this research. Filter media did not lose its operating properties after regeneration cycle and regeneration cycle is necessary when the pressure loss reaches 300 mm of the water column. Proposed water treatment plant process schematics and schematic construction of the filter was design based on the results of the research. Drawings of water treatment plant were designed to 4 filter system, each flowrate is 15 m3/h. The possible ways to operate the equipment were discussed and the treatment and backwash modes were tested with SolidWorks software. Acknowledgements: I would especially like to thank to the doctoral candidate Martynas Tichonovas for direct assistance in investigations. |
