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

The membrane-bioreactor (MBR) is a combination technology that includes biological treatment and membrane filtration separation. According to the test, it studied the use of membrane bioreactor reuse in municipal wastewater treatment and reuse. The test measured every target about treated water quality,NH3-N,TN,CODcr,Sludge concentration and Turbidity. The results of the test show that the MBR can get efficient solid liquid separation to obtain the recycled water directly, and can maintain high concentration of microbial biomass in bioreactor. In addition, it can increase the volume of load handing equipment, and reduce floor space.

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Characteristics of Solid-liquid Separation of Waste Excess Sludge from Small-scale On-site Domestic Wastewater Treatment Systems

Journal of the Japan Society of Waste Management Experts ◽

10.3985/jswme.7.1 ◽

1996 ◽

Vol 7 (1) ◽

pp. 1-7 ◽

Cited By ~ 1

Author(s):

Takehiko OGAWA ◽

Masaharu TADOKORO ◽

Shigeru OHNO

Keyword(s):

Wastewater Treatment ◽

Domestic Wastewater ◽

Small Scale ◽

Excess Sludge ◽

Liquid Separation ◽

Domestic Wastewater Treatment ◽

Solid Liquid ◽

Solid Liquid Separation ◽

Wastewater Treatment Systems

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Séparation solide-liquide : les membranes. / Solid-liquid separation : the membranes

Sciences Géologiques Bulletin ◽

10.3406/sgeol.1993.1903 ◽

1993 ◽

Vol 46 (1) ◽

pp. 175-182

Author(s):

Jean-Luc Bersillon

Keyword(s):

Liquid Separation ◽

Solid Liquid ◽

Solid Liquid Separation

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

Water Practice & Technology ◽

10.2166/wpt.2010.065 ◽

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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