Treatment of Hospital Wastewater by Novel Nano-Filtration Membrane Bioreactor (NF-MBR)

سال انتشار: 1391
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 959

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شناسه ملی سند علمی:

JR_IJEE-4-1_010

تاریخ نمایه سازی: 1 اردیبهشت 1393

چکیده مقاله:

In this paper a pilot-scale membrane bioreactor (MBR) equipped with nano-membranes treating the hospital wastewaters has been studied in order to evaluate the removal of nutrients. The main goal was toexamine the feasibility of the NF-MBR used to treat hospital wastewater. Process efficiency was evaluated in terms of COD, NH3 N, NO3_N, NO3_N and PO4-P removal. The pilot plant located at the Babol Clinic Hospital, _Babol, Mazandaran, Iran. The performance of NF-MBR pilot for biological nutrient removal was evaluated during 62 days of operation. The NF-MBR resulting in respective HRT of 2.9 h. The influent COD, NH3_N and PO4-P averaged at 688, 11.8 and 3 mg/l respectively. The final treated effluent COD, NH3_N and PO4-P for the same period averaged 35, 1.69 and 0.89 mg/l respectively. The operating results of the pilot plant demonstrate that the NFMBRprocess is both effective and efficient in meeting the water discharge and reuse quality requirements at the hospital. The NF-MBR showed a high COD removal, stable and complete nitrification. The biological nutrient removal efficiencies were high from the start of operation with COD and NH 3 N removal efficiencies of 92 ± 4% and_ 88 ± 2, respectively. During the course of the experiment PO4-P removal efficiencies increased and finally PO4-P removal efficiency of 68% was achieved. Indicating that the NF-MBR effluent can be directly discharged into natural waters and it’s suitable for reuse

کلیدواژه ها:

Nano-Filtration Membrane bioreactor (NF-MBR)/ Hospital wastewater /Nutrients /Flux /Nitrogen/ Phosphorous

نویسندگان

Farshad Golbabaei Kootenaei

Faculty of Environment, University of Tehran, Tehran, Iran

Hasan Amini Rad

Department of Civil and Environmental Engineering,Babol Noshirvani University of Technology, Babol, Iran