An on-line settling column for measuring the dynamic variations of settling velocity of activated sludge has been developed. The settling column is automatic and self-cleansing insuring continuous and reliable measurements. The settling column was tested on sludge from a batch reactor where sucrose was added as an impulse to activated sludge. The continuous measurement of settling velocity revealed a highly dynamic response after the sucrose was added. The results were verified with simultaneous measurement of the initial settling rate. A 200 hour experiment showed variations in settling velocity, which was not apparent in the DSVI (Diluted Sludge Volume Index).
Research Article|August 01 1997
On-line measurements of settling characteristics in activated sludge
Water Sci Technol (1997) 36 (4): 307-312.
Michael R. Rasmussen, Torben Larsen; On-line measurements of settling characteristics in activated sludge. Water Sci Technol 1 August 1997; 36 (4): 307–312. doi: https://doi.org/10.2166/wst.1997.0144
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