Abstract
This study reports on anaerobic sludge granulation in a laboratory-scale sulfate-reducing up-flow sludge bed (SRUSB) in a novel sulfate reduction, autotrophic denitrification and nitrification integrated (SANI®) process for treatment of saline sewage. Granulation occurred in 30 d and reached full development in 90 d. The sulfate-reducing granules grew up to around 1 mm after 90 d with 21 mL/g SVI5 (sludge volume index measured after 5 min) and the biomass concentration reached 29 g/L after 4 months' operation. The reactor removed 89% chemical oxygen demand (COD) and reduced 75% sulfate within 1 h of hydraulic retention time, under a COD loading rate of up to 6.4 kg COD/(m 3 · d).
| Original language | English |
|---|---|
| Pages (from-to) | 560-566 |
| Number of pages | 7 |
| Journal | Water Science and Technology |
| Volume | 68 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - 2013 |
Keywords
- Anaerobic sludge granulation
- SANI process
- SRUSB
- Saline wastewater
- Sulfate reduction