The difference between MBR and MBBR in wastewater treatment technology

MBR process principle: activated sludge + membrane separation technology (membrane bioreactor) MBBR principle: biofilm method (carrier fluidized bed biofilm technology) Organic matter removal: MBR mainly rely on higher sludge load. MBBR mainly relies on the biofilm on the packing material. SS removal: MBR membrane effectively removes SS, and MBBR itself has no removal ability and mainly relies on the back-end ultrafiltration membrane process to remove SS. Comparison of later management and operation: MBBR process: the filler can be added once, and only the biofilm on the filler needs to be strengthened in the subsequent operation. The investment in the construction period is large, but the operation and maintenance are simple. MBR process: the service life of membrane group is generally 4-5 years, and the replacement cycle is shorter. Daily operation and management of the membrane group need to carry out chemical cleaning, offline cleaning and other maintenance work, operation and management is more difficult. And the cost is high