Determination of the optimal dose of polyelectrolyte sludge conditioner considering particle sedimentation effects

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Original languageEnglish
Pages (from-to)245-249
Journal / PublicationAdvances in Environmental Research
Issue number3
Publication statusPublished - Aug 2000
Externally publishedYes


The specific resistance to filtration (SRF) of sludge was determined using both a leaf filter and a Buncher funnel. The filterability of a kaolin suspension and an alum sludge were characterized using SRF data and capillary suction time (CST) measurements. Filter orientation during the leaf filter test and stirring during the Buncher funnel test affected the SRF values, and the optimal dosage of polyelectrolyte conditioner (defined as the dosage that yields the minimum resistance to filtration) varied depending on the type of test used. Therefore, the optimal dose of polyelectrolyte was an operationally defined value that depended on the geometry of the filter chamber and fluid/particle interactions, such as sedimentation. © 2000 Elsevier Science Ltd.

Research Area(s)

  • Capillary suction time, De-waterability, Optimal dose, Particle sedimentation, Sludge conditioning, Specific resistance to filtration

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