Treatment of urban wastewater in a membrane bioreactor at high organic loading rates

2001 ◽  
Vol 92 (2) ◽  
pp. 95-101 ◽  
Author(s):  
Stefan Holler ◽  
Walter Trösch
Keyword(s):  
Membrane Bioreactor ◽  
Organic Loading ◽  
Urban Wastewater ◽  
Loading Rates

Application of combined membrane biological reactor and electro-oxidation processes for the treatment of landfill leachates

2009 ◽  
Vol 60 (3) ◽  
pp. 605-614 ◽  
Author(s):  
Fathi Aloui ◽  
Firas Fki ◽  
Slim Loukil ◽  
Sami Sayadi
Keyword(s):  
Membrane Bioreactor ◽  
Biological Process ◽  
Ph Value ◽  
Oxygen Demand ◽  
Ammonia Nitrogen ◽  
Optimum Conditions ◽  
Organic Loading ◽  
Landfill Leachates ◽  
Loading Rates ◽  
Electro Oxidation

Landfill leachate (LFL) is a very complex wastewater that poses considerable hazards to local communities and the environment. With this concern in mind, the present study was undertaken to investigate the performance of an aerobic membrane bioreactor treating raw LFL from Djebel Chekir (Tunisia) discharge. The LFL samples collected from this site were found to be highly loaded with organic matter, ammonia, salts, greases, phenols and hydrocarbons. Important removals of chemical oxygen demand (COD) and NH4+-N were attained after 44 days of treatment at optimum conditions for the membrane and with organic loading rates (OLR) of 1.9 and 2.7 grams COD per litter and day. This treatment allowed for an important detoxification of the landfill leachates and a significant elimination of the microorganisms. Electrochemical oxidation using Pi/Ti was applied as a post-treatment and after the biological process in order to reduce the residual ammonia and COD. At a pH value of 9, current density of 4 A dm−2 and electrolysis time of 60 minutes, COD and ammonia nitrogen were reduced to 1,000 mg L−1 and 27 mg L−1, respectively. COD and NH4+-N removals were accompanied by significant detoxification.

Biodiversity in aerobic granule membrane bioreactor at high organic loading rates

2009 ◽  
Vol 85 (2) ◽  
pp. 383-388 ◽  
Author(s):  
Yu-Chuan Juang ◽  
Sunil S. Adav ◽  
Duu-Jong Lee ◽  
Juin-Yih Lai
Keyword(s):  
Membrane Bioreactor ◽  
Aerobic Granule ◽  
Organic Loading ◽  
Loading Rates ◽  
Granule Membrane

Membrane fouling in a fermentative hydrogen producing membrane bioreactor at different organic loading rates

2010 ◽  
Vol 360 (1-2) ◽  
pp. 226-233 ◽  
Author(s):  
Lihong Shen ◽  
Yunan Zhou ◽  
Basuvaraj Mahendran ◽  
David M. Bagley ◽  
Steven N. Liss
Keyword(s):  
Membrane Fouling ◽  
Membrane Bioreactor ◽  
Organic Loading ◽  
Loading Rates ◽  
Fermentative Hydrogen

Influence of organic loading rates on treatment performance of membrane bioreactor treating tannery wastewater

2021 ◽  
pp. 101810
Author(s):  
Thi-Dieu-Hien Vo ◽  
Xuan-Thanh Bui ◽  
Bao-Trong Dang ◽  
Thanh-Tin Nguyen ◽  
Van-Truc Nguyen ◽  
...  
Keyword(s):  
Membrane Bioreactor ◽  
Tannery Wastewater ◽  
Organic Loading ◽  
Loading Rates ◽  
Treatment Performance

scholarly journals Effects of High Sludge Cycle Frequency on Performance and Syntrophic Metabolism of Anaerobic Membrane Bioreactor for Treating High-Lipid Kitchen Waste Slurry

Energies ◽  
2019 ◽  
Vol 12 (14) ◽  
pp. 2673 ◽  
Author(s):  
Xiaolan Xiao ◽  
Wansheng Shi ◽  
Wenquan Ruan
Keyword(s):  
Membrane Bioreactor ◽  
Oxygen Demand ◽  
Long Chain Fatty Acids ◽  
Organic Loading ◽  
Kitchen Waste ◽  
Cycle Frequency ◽  
Sludge Flocs ◽  
Loading Rates ◽  
High Lipid ◽  
Syntrophic Degradation

The performance and syntrophic metabolism of the Anaerobic Membrane Bio-reactor (AnMBR) treating high-lipid kitchen waste slurry under different sludge cycle frequencies were investigated in this study. When the sludge cycle frequencies were 3.6 cycles/h, 9.0 cycles/h and 14.4 cycles/h, the obtained Organic Loading Rates (OLRs) were 10.3 kg-COD/m3d, 12.4 kg-COD/m3d and 18.1 kg-COD/m3d, while the corresponding biogas productions were 190 L/d, 310 L/d and 520 L/d. Moreover, with an increase of sludge cycle frequency, the Chemical Oxygen Demand (COD) removal efficiency improved from 86.2% to 90.4% and 96.3%. Additionally, the higher sludge cycle frequency did not break up the sludge flocs and further affect the syntrophic degradation of the toxic Long-Chain Fatty Acids (LCFAs). Conversely, the higher sludge cycle frequency enhanced LCFA degradation and decreased LCFA accumulation. Meanwhile, under higher sludge cycle frequencies, the abundance of syntrophic Methanobacterium, Syntrophomonas and Clostridium increased and favored the syntrophic metabolism of LCFAs.

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