(562b) Centrifugal Separation of Flocculated Sludges in Wastewater Treatment
AIChE Annual Meeting
2016
2016 AIChE Annual Meeting
Separations Division
Advances in Fluid Particle Separation in Energy, Water, and Environmental Systems
Wednesday, November 16, 2016 - 3:40pm to 4:05pm
Despite it is not possible to determine the floc size in-situ in the machine, the recoveryâ??size cut curve can be determined for a given wastewater application (i.e. with organic-to-inorganic ratio defined and a selected flocculant), from which the performance of the machine can be inferred and projected for other decanter sizes.Â
The model has been applied in a secondary wastewater treatment plant to several decanters with different configurations in separating flocs from raw mixed sludges (48% Primary Sludge, 52% Waste Activated Sludge). The approach also provides a scale-up of decanter centrifuge performance in separation floc factoring in the scale-up, (a) the operating conditions (pool depth, rotation speed, feed rate ) and (b) configuration of the decanter (pool depth, clarifier length, etc.).
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Reference:
[1] Wallace Woon-Fong Leung, â??Industrial Centrifugation Technologyâ?, McGraw-Hill, 1998.Â
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KEYWORDS
Decanter Centrifuge, Flocculated Solids, Wastewater, SeparationÂ