The study ahead aims at treatment of waters around Tehran Refinery contaminated with petroleum compounds. Since, there are lots of villages around the Tehran Refinery and the majority of the villages provide their required drinking water from the wells. During study period a laboratory scale with a total liquid volume of 550 L was used. The reactor was filled with 85% Polyurethane elements, occupying 3% of the reactor’s liquid volume. Pilot conditions are as follows, Temperature= 15 to 25 ° C, pH= 6.7 to 7.5, dissolved oxygen = 4 to 5 mg/lit, MLSS= 1400 to 1700 mg/L Hydraulic Retention Time (HRT) = 240 minutes and unlimited Solid Retention Time (SRT), after suspended oil removal by oil separation system, COD, NO3-N and PO4-P removal efficiencies for the MBBR, filtration and activated carbon was 99, 94 and 58%, respectively. The results of the average effluent from each reactor show that denitrification process in the preceding the aerobic MBBR, filtration and activated carbon occurred and in predenitrification system in filtration, consumed most of the biodegradable organic matter. In case of formaldehyde, phenol and total petroleum hydrocarbon (TPH) parameters, they were removed in the pilot up to 96, 79 and 94%, respectively. With the exception of Formaldehyde All parameters in the pilot output are within the standard and this method can be known as an optimal method for treatment of water contaminated with oil
کلید واژگان :Contaminated water, Petroleum compounds, Moving Bed Biofilm Reactor
ارزش ریالی : 150000 ریال
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