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PROPERTIES OF TREATMENT SLUDGE DURING SEDIMENTATION AND CONSOLIDATION TESTS1
 

Summary: PROPERTIES OF TREATMENT SLUDGE DURING SEDIMENTATION
AND CONSOLIDATION TESTS1
Lincar Pedroni2
, Jean-Baptiste Dromer, Michel Aubertin, Greg Kennedy
Abstract. Sedimentation and consolidation tests have been conducted on sludge
produced from an acid mine drainage (AMD) treatment plant. The testing
program involved the development of a new laboratory system, designed and
constructed to assess the specific properties of low density slurry. During the
instrumented large size column tests, the evolution of sedimentation and
hydrodynamic consolidation was monitored with optical observation of the solid-
liquid interface, evaluation of density with gamma ray sensors, and
measurement of pore pressure u using transducers. At the end of each test,
physical and geotechnical properties of the resulting sludge were measured. In
this paper, the authors will present a brief overview of the set up, followed by a
presentation of new test results with the analysis using sedimentation-
consolidation theories. The results presented here will be used in future analyses
to evaluate the volume changes of AMD treatment sludge in storage basins.
Additional Key Words: AMD, large strain, mechanical properties.
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Source: Aubertin, Michel - Département des génies civil, géologique et des mines, École Polytechnique de Montréal

 

Collections: Engineering; Environmental Management and Restoration Technologies