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Classification of Suspensions by Means of Rotating Filter Discs and Autodynamic High‐Frequency Backwashing
Author(s) -
Steinke L.,
Ripperger S.
Publication year - 2010
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/ceat.201000150
Subject(s) - backwashing , filter (signal processing) , overpressure , flow (mathematics) , mechanics , centrifugal force , filter cake , volume (thermodynamics) , chromatography , materials science , chemistry , engineering , physics , thermodynamics , mechanical engineering , electrical engineering , inlet
A new method for the classification of suspensions by means of rotating filter discs is presented. The classification without a filter cake buildup by means of a single shaft disc filter is possible using the high‐frequency autodynamic backwashing method. High‐frequency autodynamic backwashing results from an overpressure fluctuation between the filtrate and concentrate sides, resulting in different flow directions of the filtrate volume flow. The main parameters are the centrifugal force acting on the fluid inside the discs in combination with the fact that the discs are slightly inclined. It is demonstrated that the separation of coarse particles is entirely possible.