MBR is a new wastewater treatment technology, which combines biological treatment with membrane separation.
In conventional activated sludge processes, the separation of treated water from the sludge is mainly achieved by sedimentation in the secondary clarification tank. This requires a considerable amount of space and capital cost, and the separation efficiency is low.
Comparison between MBR & traditional AS process
|
Water index |
（NTU） |
SS (mg/L) |
CODcr(mg/L) |
BOD5(mg/L) |
NH3-N(mg/L) |
|
Raw water |
- |
300 |
500 |
300 |
40 |
|
MBR outlet |
＜1 |
0 |
＜20 |
＜5 |
＜1 |
|
AS process outlet |
＜10 |
＜15 |
＜50 |
＜10 |
＜15 |
A common process flow of MBR
MBR reactor
Working principle internal MBR
