Physiochemical properties of digested sewage sludge with ultrasonic treatment

Seungmin Na, Young U. Kim, Jeehyeong Khim

Research output: Contribution to journalArticle

100 Citations (Scopus)

Abstract

We investigated the dewaterability and physiochemical properties of digested sludge after treatment with ultrasonic energy for the purpose of reducing sludge. The study involved laboratory experimentation under varying test conditions of treatment time, volume of sludge and ultrasonic energy, which combined can be denoted as specific supplied energy (Ev). Results of the experiments show that particle size (dp50, dp10, U) of the ultrasonically treated sludge decreases due to the separation of sludge flocs. Capillary suction times (CSTs) decrease significantly, while turbidity, VDSs/VS and SCODs/TCOD increase with ultrasonic treatment. From these results, it was found that the ultrasonic treatment specified by the supplied energy (Ev) can not only improve dewaterability but also reduce the volume and mass and change the chemical properties of sludge.

Original languageEnglish
Pages (from-to)281-285
Number of pages5
JournalUltrasonics Sonochemistry
Volume14
Issue number3
DOIs
Publication statusPublished - 2007 Mar 1

Fingerprint

sewage
ultrasonic processing
sludge
Sewage sludge
Sewage
Ultrasonics
Turbidity
Therapeutics
ultrasonics
Chemical properties
energy
turbidity
Particle size
suction
Suction
experimentation
Particle Size
chemical properties
Experiments

Keywords

  • Capillary suction time (CST)
  • Dewaterability
  • Specific supplied energy (E)
  • Ultrasound

ASJC Scopus subject areas

  • Safety, Risk, Reliability and Quality
  • Acoustics and Ultrasonics

Cite this

Physiochemical properties of digested sewage sludge with ultrasonic treatment. / Na, Seungmin; Kim, Young U.; Khim, Jeehyeong.

In: Ultrasonics Sonochemistry, Vol. 14, No. 3, 01.03.2007, p. 281-285.

Research output: Contribution to journalArticle

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