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Electrocoagulation of Produced Water as Pretreatment to Membrane Filtration
Art der Abschlussarbeit
Master
Autoren
- Jiang, Yiyang
Betreuer
- Prof. Dr. André Lerch
- Chem. Eng. Flávia de Farias Lima
Abstract
Electrocoagulation (EC) has been successfully employed in many wastewater treatment fields and has its particular advantage against conventional coagulation. This thesis explores the performance of EC on the treatment of produced water. The result illustrates the majority of turbidity and TOC are significantly reduced by over 94% and 90%, respectively. Generated sludge is almost thoroughly dry in one day after the experiment and becomes denser with the enhancement of charge applying on the low oil concentration. The zeta potential of produced water doesn’t change at various sodium chloride contents, but may be relevant to the oil concentration. After the EC process, the zeta potential turns out to be in the range of 0 mV to +5 mV and increases at the higher exerted charge. Meanwhile, the size distribution has no response to the alternation either in oil concentration or charge. A lab-scale membrane filtration system and the MF/UF membrane cell are also developed in this study. The dimension of the cell flow channel is 5 cm * 7 cm * 1.12 mm and the building material for the cell is acrylic glass. The pump selected for the system should provide the flow rate from 28 ml/s to 112 ml/s and the transmembrane pressure from 0.5 bar to 4 bars.
Schlagwörter
Electrocoagulation (EC), produced water, zeta potential, size distribution, membrane test cell
Berichtsjahr
2017