Abstract
The performance of porous and non-porous media in two mesophilic anaerobic upflow filters treating a wastewater from a milk bottling factory was investigated. The results indicated that at higher OLRs the porous media had a much better performance. The reactor with non-porous packing showed instability above an OLR of 4 kg COD/m3 ·d whereas the reactor with the porous packing was still stable at OLRs of up to 21 kg COD/m3 ·d. The behaviour of the media and biomass wash-out were observed at high upflow velocities (UV) and results demonstrated that porous media was not as susceptible to shear stresses as non-porous media. At the end of the investigation, attachment studies were carried out and the results showed a heavy biomass attachment in the porous media, whereas mainly unattached biomass was retained in the voids of the non-porous media.
| Original language | English |
|---|---|
| Pages (from-to) | 1619-1624 |
| Number of pages | 6 |
| Journal | Water Research |
| Volume | 28 |
| Issue number | 7 |
| DOIs | |
| Publication status | Published - Jul 1994 |
| Externally published | Yes |
Funding
Acknowledgements--The authors would like to acknowledge the support of the University of Newcastle upon Tyne, in particular the Environmental Engineering Group which has allowed the use of its facilities for this study. Bahar Kasapgil would like to acknowledge the Turkish Ministry of Education and Sport for financial support and express her gratitude to the Middle East Technical University for encouragement throughout these studies. Orhan Inee would also like to express his deep gratitude to the Istanbul Technical University, Department of Environmental Engineering for their full support.
| Funders | Funder number |
|---|---|
| Ministry of Sports and Education |
Keywords
- anaerobic upflow filter
- attachment
- performance
- PVC
- shear stress
- sintered glass
