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Details for article 9 of 10 found articles
| Title: |
Stability and performance of thermophilic anaerobic fixed-bed reactor packed with a saddle-shaped slag biocarrier |
| Author: |
Yang, Min Ishihara, Taketoshi Okada, Mitsumasa Nagai, Shiro Sunahara, Hiroshi |
| Appeared in: |
Environmental technology |
| Paging: | Volume 13 (1992) nr. 7 pages 671-678 |
| Year: |
1992-07 |
| Contents: |
The performance of a recycled thermophilic fixed-bed reactor packed with saddle-shaped slag biocarrier was evaluated on treatment of a synthetic wastewater containing glucose and corn-steep-liquor under various conditions. Bacteria were attached to the biocarrier by circulating seed sludge up through the reactor for 12 days. Over a COD loading rate range of 1 to 13 gdm-3d-1 and an HRT range of 24 to 12 h, the COD removal varied from 96 to 92%. The minimum HRT was found to be 12 h for a COD removal of over 90% at a COD load of 11 gdm-3d-1. The MLSS in the effluent varied from 0.03 to 0.48gdm-3, the methane conversion ratio was 0.33 dm3g-1COD, and the net biomass yield was in the range of 0.02. to 0.04 gMLVSSg-1 COD. The thermophilic treatment was found to be as efficient and as stable as the mesophilic process. The unstable reactor at an HRT of 10 h could be restored to a stable state by increasing the ratio of alkalinity to influent COD to 0.5. For variations of upflow linear velocity in the reactor from 0.1 to 6.8 cm.min-1 the COD removal slightly varied from 94 to 96 % at a COD load of 5 gdm-3 d-1 and HRT of 18 h. However, a continuous or intermittent recycle was found to be necessary to prevent clogging and channelling. |
| Publisher: |
Taylor & Francis |
| Source file: |
Elektronische Wetenschappelijke Tijdschriften |
Details for article 9 of 10 found articles
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