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Treatment of traces of oil from electroplating industry wastewater by using membrane bioreactor

Mohamed Ghengesh, Mohamed Ghengesh (2011) Treatment of traces of oil from electroplating industry wastewater by using membrane bioreactor. Masters thesis, Universiti Teknologi Malaysia, Faculty of Chemical and Natural Resources Engineering.

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Abstract

Membrane bioreactor (MBR) is a modification of an activated sludge process and is considered as a novel technology for treating wastewater. MBR process combines the activated sludge process with membrane filtration, which allows for a high effluent quality in terms of removal efficiency of oil and grease (O&G) and chemical oxygen demand (COD). In this study, performance of a laboratory-scale submerged hollow fibre membrane to treat oily wastewater from an electroplating plant in Johor was investigated. The degradation of raw oily wastewater at a hydraulic retention time (HRT) of 12.7 hours was studied. The experimental work was divided into three runs; the sludge retention time was one week prior to each run. Results of the three runs showed that O&G was biodegraded in the MBR treatment system with high extent, with removal efficiency between 91.1 to 98.7%. Results also showed a high removal efficiency of COD and BOD. The removal efficiency was 97.8% to 99.1% for COD and 77.8% to 86.1% for BOD. During the three runs membrane separation played an important role in providing a stable and excellent final effluent quality. The higher mixed liquor suspended solids (MLSS) concentration in Run 3 lead to higher biodegradability of O&G and COD in the biological tank, as a result the removal efficiency for this run was higher then for Runs 1 and 2, with a removal efficiency of 98.7% and 99.1% for O&G and COD respectively.

Item Type:Thesis (Masters)
Additional Information:Thesis (Sarjana Kejuruteraan (Kimia)) - Universiti Teknologi Malaysia, 2011; Supervisor : Assoc. Prof. Dr. Mohd. Ariffin Abu Hassan
Uncontrolled Keywords:membranes (technology), electroplating industry wastewater, oil
Subjects:T Technology > TP Chemical technology
Divisions:Chemical Engineering
ID Code:15431
Deposited By: Ms Zalinda Shuratman
Deposited On:30 Sep 2011 14:57
Last Modified:14 Nov 2013 08:52

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