Operating conditions corresponding to optimal final properties of activated sludge using the DOE and RSM techniques

Tan Phong Nguyen, Nidal Hilal, Nicholas P. Hankins

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

This paper presents the influence of four relevant factors on the flocculation behavior in the activated sludge process: organic loading rate (COD), solid retention time (SRT), dissolved oxygen (DO), and calcium ion concentration, and links them to a selected set of process responses: sludge volume index (SVI), turbidity, organic removal rate (COD), and suspended solids (SS) removal. The "Design of Experiments" (DOE) and the "Response Surface Methods" (RSM) approaches are used to establish the operating conditions corresponding to optimal final properties of the activated sludge. Using these techniques, the results show that it is indeed feasible to locate the operating conditions which optimize the flocculation process and the sludge settling properties. The study represents a first attempt to evaluate the flocculation process in activated sludge using the DOE/RSM approach.

Original languageEnglish
Pages (from-to)2041-2066
Number of pages26
JournalSeparation Science and Technology
Volume44
Issue number9
DOIs
Publication statusPublished - Jan 2009
Externally publishedYes

Fingerprint

Flocculation
Design of experiments
Activated sludge process
Turbidity
Dissolved oxygen
Calcium
Ions

Keywords

  • Activated sludge
  • Design of experiments (DOE)
  • Flocculation process
  • Response surface methods (RSM)

ASJC Scopus subject areas

  • Chemistry(all)
  • Process Chemistry and Technology
  • Chemical Engineering(all)
  • Filtration and Separation

Cite this

Operating conditions corresponding to optimal final properties of activated sludge using the DOE and RSM techniques. / Nguyen, Tan Phong; Hilal, Nidal; Hankins, Nicholas P.

In: Separation Science and Technology, Vol. 44, No. 9, 01.2009, p. 2041-2066.

Research output: Contribution to journalArticle

Nguyen, Tan Phong ; Hilal, Nidal ; Hankins, Nicholas P. / Operating conditions corresponding to optimal final properties of activated sludge using the DOE and RSM techniques. In: Separation Science and Technology. 2009 ; Vol. 44, No. 9. pp. 2041-2066.
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