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De l'analyse du pilotage d'un décanteur centrifuge à son instrumentation

Abstract : The work presented herein consists on the elaboration of an original method to unsderstand and control the piloting of Guinard centrifugal machines. Work was carried out in three distinct parts. • The bibliographic analysis enabled us to characterize the various mechanics which manage the mechanical drying of urban muds by the centrifugal machines. Sludge present a great variability and their characterization is not always easy. The empirism is more used than the work of the process comprehension; no processes genius model gives whole satisfaction. There exists a real need of new methods of study. • One solution is the analysis of decanter's piloting. This analysis is developped by asking the experts and brings a relevant answer to the question “What to measure?”. Thus, we determined the minimal number of parameters to know to pilot the machine. The synthesis of this expert analysis enabled us to provide a simple tool of help to the decision. In order to able the uses of this software for on line control of the centrifuge decanter; we studied the possible instrumentations of the process. • Several instruments present on the market are tested to determine their metrological characteristics. A transmitter of the suspended matter concentration of the centrate, resting on the analysis of spectrophotometric data, is developed. This measurement present the favour to be without contact with the centrate, which avoid the problems of sensors filling, frequent on the waste water plants.
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Submitted on : Monday, June 2, 2008 - 8:00:00 AM
Last modification on : Friday, August 5, 2022 - 2:54:00 PM
Long-term archiving on: : Friday, September 10, 2010 - 12:25:54 PM


  • HAL Id : pastel-00003701, version 1
  • PRODINRA : 246687


Nader Moatamri. De l'analyse du pilotage d'un décanteur centrifuge à son instrumentation. Sciences de l'ingénieur [physics]. ENSIA (AgroParisTech), 2003. Français. ⟨NNT : 2003EIAA0132⟩. ⟨pastel-00003701⟩



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