天然有機物對鋁鹽污泥膠羽特性及其對污泥毯澄清池穩定性之影響(2/3)
Date Issued
2004-04-26
Date
2004-04-26
Author(s)
DOI
922214E002007
Abstract
This report summarized the experimental results of
the second year in the three-year-project investigating the
effects of organic substances on blanket stability. We
analyzed the blanket dynamics in a fluidized bed using a
simplified one-dimensional model. The model predicted
that the distribution of the solids fraction, initially
randomly distributed in the blanket, would firstly evolve
to a wave-like distribution at a lower solids fraction. Then
the blanket would compact itself to another uniform
distribution at a higher solids fraction. Experimental
works with synthetic raw water coagulated with PACl
fluidized in a lab-scale fluidized bed confirmed the
theoretical predictions. The solids flux plot was
constructed with underdosed, optimal, and overdosed
suspensions. The operating condition at which the
effluent turbidity reached a minimum was indicated as
the “optimal’ condition of the blanket system.
Subjects
Blanket
stability
conditioning
model
Publisher
臺北市：國立臺灣大學化學工程學系暨研究所
Type
report
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