Efficient treatment of baker’s yeast wastewater using aerobic membrane bioreactor
Publish place: Advances in Environmental Technology، Vol: 1، Issue: 3
Publish Year: 1394
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:
JR_AET-1-3_001
تاریخ نمایه سازی: 21 فروردین 1397
Abstract:
A 0.15 µm dead-end immersed hollow fiber membrane and filamentous fungus Aspergillus oryzae were used in a membrane bioreactor (MBR) for treatment of baker’s yeast wastewater. The fungus was adapted to the wastewater in the bioreactor for two weeks before continuous process. Average organic loading rate of 4.2 kg COD/m3.d was entered the bioreactor. COD and BOD 5 of the wastewater were reduced to 488 and 70 mg/L, respectively, over a period of 45 days, while the turbidity of the wastewater reduced from 134-282 NTU to less than 2.5 NTU in the permeate stream. Critical flux and a suitable operating flux were determined as 6.7 and 5 L/m2h, respectively. The system was able to efficiently reduce the turbidity and suspended solid by 99.4% and 98.3%, respectively, resulting in a clear effluent.
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Authors
Mohammad J. Nosratpour
Department of Chemical Engineering, Isfahan University of Technology, Isfahan ۸۴۱۵۶-۸۳۱۱۱, Iran
Morteza Sadeghi
Department of Chemical Engineering, Isfahan University of Technology, Isfahan ۸۴۱۵۶-۸۳۱۱۱, Iran
Keikhosro Karimi
Department of Chemical Engineering, Isfahan University of Technology, Isfahan ۸۴۱۵۶-۸۳۱۱۱, IranIndustrial Biotechnology Group, Institute of Biotechnology and Bioengineering, Isfahan University of Technology, Isfahan ۸۴۱۵۶-۸۳۱۱۱, Iran
Saied Ghesmati
Department of Chemical Engineering, Isfahan University of Technology, Isfahan ۸۴۱۵۶-۸۳۱۱۱, Iran