This paper analyzes the advantages and disadvantages of the submerged membrane bioreactor(MBR)process.MBR has the advantages of small footprint and good effluent water quality.It analyzes that the MBR process has high requirements for pretreatment systems and weak adaptability to changes in water volume.Compared with the traditional activated sludge method,there is also a difference in the sludge concentration,reflux ratio,and oxygen supply of the MBR process.Finally,common design parameters and points for attention when MBR is used in printing and dyeing wastewater are given.
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