Filtration I – Determining Filterability of Suspensions
Objectives and Learning Outcomes
Examine and determine the filterability of different suspensions (e.g., waster water, sludge).
Discuss and evaluate the effectiveness of preliminary treatments (e.g., flocculation, adsorption, polyelectrolytes, sedimentation).
Waste water which has suspended materials could be removed from water by simple filtration, which is filtration an especially effective unit operation in the removal of very small particles, like microorganisms. These filters could be used as a bio-reactor in waste treatment. The waste filtration process is usually performed using a medium such as sand or anthracite coal.
Filterability is not a specific property of a suspension, but it is an interactive property between a suspension and some filter media. If the properties of one of these are kept constant (i.e., as a standard filter medium) the changes in filterability only reflect changes in the suspension.
A suspension is considered to...
KeywordsPorous Medium Filter Medium Head Loss Displacement Time Approach Velocity
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