Unrevealing the Role of in-situ Fe(II)/S 2O 8 2- Oxidation in Sludge Solid-Liquid Separation and Membrane Fouling Behaviors of Membrane Bioreactor (MBR)

2021 ◽  
Author(s):  
Xueqin Lu ◽  
Jianhui Wang ◽  
Yule Han ◽  
Yan Zhou ◽  
Zhongyi Zhang ◽  
...  
Keyword(s):  
Membrane Fouling ◽  
Membrane Bioreactor ◽  
Liquid Separation ◽  
Solid Liquid ◽  
Solid Liquid Separation

Membrane bioreactor with nonwoven fabrics as solid–liquid separation media for wastewater treatment

Desalination ◽  
2007 ◽  
Vol 202 (1-3) ◽  
pp. 122-128 ◽  
Author(s):  
Wang-Kuan Chang ◽  
Alvin Yen-Jung Hu ◽  
Ren-Yang Horng ◽  
Wen-Yuang Tzou
Keyword(s):  
Wastewater Treatment ◽  
Membrane Bioreactor ◽  
Liquid Separation ◽  
Nonwoven Fabrics ◽  
Separation Media ◽  
Solid Liquid ◽  
Solid Liquid Separation

Nitrogen Removal in a Real-Time Controlled Sequencing Batch Membrane Bioreactor

2010 ◽  
Vol 5 (3) ◽  
Author(s):  
Cheng-Nan Chang ◽  
Li-Ling Lee ◽  
Han-Hsien Huang ◽  
Ying-Chih Chiu
Keyword(s):  
Real Time ◽  
Nitrogen Removal ◽  
Membrane Bioreactor ◽  
Synthetic Wastewater ◽  
Real Time Control ◽  
Time Control ◽  
Cake Layer ◽  
On Line ◽  
Solid Liquid ◽  
Solid Liquid Separation

The performance of a real-time controlled Sequencing Batch Membrane Bioreactor (SBMBR) for removing organic matter and nitrogen from synthetic wastewater has been investigated in this study under two specific ammonia loadings of 0.0086 and 0.0045g NH4+-N gVSS−1 day−1. Laboratory results indicate that both COD and DOC removal are greater than 97.5% (w/w) but the major benefit of using membrane for solid-liquid separation is that the effluent can be decanted through the membrane while aeration is continued during the draw stage. With a continued aeration, the sludge cake layer is prevented from forming thus alleviating the membrane clogging problem in addition to significant nitrification activities observed in the draw stage. With adequate aeration in the oxic stage, the nitrogen removal efficiency exceeding 99% can be achieved with the SBMBR system. Furthermore, the SBMBR system has also been used to study the occurrence of ammonia valley and nitrate knee that can be used for real-time control of the biological process. Under appropriate ammonia loading rates, applicable ammonia valley and nitrate knee are detected. The real-time control of the SBMBR can be performed based on on-line ORP and pH measurements.

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