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Membrane bioreactor (MBR) is a very advanced technology and very reliable wastewater treatment processes.

It combine conventional biological treatment (e.g. activated sludge) processes with membrane filtration like microfiltration/ ultrafiltration with a suspended growth bioreactor to provide an advanced level of organic and suspended solids removal. This method is not only just activated sludge but also coliform bacteria and virus can be shut out. This level of filtration allows for high quality effluent to be drawn through the membranes and eliminates the sedimentation and filtration processes.

Complete independent control of HRT (Hydraulic Retention Time) and SRT (Sludge Retention Time). Allow more complete reduction of COD, and improved stability of processes such as nitrification. The mixed liquor from the biological treatment can be separated clearly into solid and liquid. It assures almost 100% removal of SS and no carry over of SS into the effluent.

It is widely used for municipal and industrial wastewater treatment plant with plant sizes up to 80,000 population equivalents. Typically used when daily volume are 48 million liters per day or less.
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