Abstract
A two-stage biofilm-membrane bioreactor (MBR) was developed in this study. High total nitrogen removal (maximum: 81.4% with recycle ratio = 3.5) was observed by recycling the suspension liquid between an anaerobic FBBR and an aerobic MBBR. Very low (less than 60 mg/L) suspended solids was kept in the membrane unit, which could improve the membrane filtration performance. Membrane fouling was further reduced by increasing the recycle ratio. When influent organic load increased, the membrane fouling rate increased, coupling with higher FCOD and suspended solids (SS) values in the feed solution around the membrane.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 588-593 |
| Number of pages | 6 |
| Journal | Water Science and Technology |
| Volume | 66 |
| Issue number | 3 |
| DOIs | |
| State | Published - 2012 |
| Externally published | Yes |
Keywords
- Biofilm-MBR
- FCOD
- Membrane
- Recycle ratio
- TN
ASJC Scopus subject areas
- Environmental Engineering
- Water Science and Technology