Abstract
The expression characteristics of original and freeze/thaw conditioned waste activated sludges were experimentally evaluated. Results in this study indicate that the first two stages of expression (primary and secondary consolidation) are similar to those of a particulate system, on which the model analysis by Shirato et al. (1974) is applicable. In the final phase of the expression of biological sludge, however, an unexpected constant-rate consolidation period, termed herein the ternary consolidation period, is observed. A modified combined Terzaghi-Voigt rheological model is proposed to describe the relation between void ratio and compressive pressure of the sludge cake. Whereas the resulting governing equation is solved analytically and the model parameters are found by regression analysis. The ternary consolidation is speculated to arise from the erosion of strongly bound moisture from the biological particles.
| Original language | English |
|---|---|
| Pages (from-to) | 905-914 |
| Journal | Water Research |
| Volume | 32 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - 1 Mar 1998 |
| Externally published | Yes |
Bibliographical note
Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].UN SDGs
This output contributes to the following UN Sustainable Development Goals (SDGs)
-
SDG 6 Clean Water and Sanitation
Research Keywords
- Activated sludges
- Expression
- Freeze/thaw treatment
- Modeling
- Ternary consolidation
Fingerprint
Dive into the research topics of 'Ternary expression stage in biological sludge dewatering'. Together they form a unique fingerprint.Cite this
- APA
- Author
- BIBTEX
- Harvard
- Standard
- RIS
- Vancouver