Please use this identifier to cite or link to this item:
|Title:||Consolidation dewatering and centrifugal sedimentation of flocculated activated sludge||Authors:||Lee, S.J.
|Issue Date:||May-2003||Citation:||Lee, S.J., Chu, C.P., Tan, R.B.H., Wang, C.H., Lee, D.J. (2003-05). Consolidation dewatering and centrifugal sedimentation of flocculated activated sludge. Chemical Engineering Science 58 (9) : 1687-1701. ScholarBank@NUS Repository. https://doi.org/10.1016/S0009-2509(03)00020-4||Abstract:||This study investigated experimentally the consolidation dewatering and centrifugal-settling processes for activated sludge subjected to cationic polyelectrolyte flocculation. The results were reported for the dynamic response of sediment cake thickness (an index for cake compaction) under various doses of polyelectrolyte conditioning, compression-permeability cell configuration and mode of operation (batch and continuous) in a centrifugal-settling cell. The reduction in sediment thickness of sludge by consolidation and centrifugation was found to correspond mostly well with the optimal dose of polyelectrolyte based on the capillary suction time. The relaxation/rebound of cake thickness was observed in both consolidation dewatering and centrifugal dewatering with comparable compaction/relaxation time scale ratios. The equilibrium sediment consolidation ratio increases with the effective solid pressure characterized by Pm and Ps, for the consolidation dewatering and centrifugal sedimentation, respectively. The experimentally determined time scales of the cake consolidation dewatering/centrifugal sedimentation processes agree reasonably well with the theory by Landman and Russel (Phys. Fluids A 5 (1993) 550). © 2003 Elsevier Science Ltd. All rights reserved.||Source Title:||Chemical Engineering Science||URI:||http://scholarbank.nus.edu.sg/handle/10635/91905||ISSN:||00092509||DOI:||10.1016/S0009-2509(03)00020-4|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on Feb 21, 2020
WEB OF SCIENCETM
checked on Feb 14, 2020
checked on Feb 16, 2020
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.