Physiochemical properties of digested sewage sludge with ultrasonic treatment

Seungmin Na; Young Uk Kim; Jeehyeong Khim

doi:10.1016/j.ultsonch.2006.06.004

Physiochemical properties of digested sewage sludge with ultrasonic treatment

Seungmin Na, Young Uk Kim, Jeehyeong Khim

School of Civil, Environmental and Architectural Engineering

Research output: Contribution to journal › Article › peer-review

117 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 (E_v). 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 (E_v) can not only improve dewaterability but also reduce the volume and mass and change the chemical properties of sludge.

Original language	English
Pages (from-to)	281-285
Number of pages	5
Journal	Ultrasonics Sonochemistry
Volume	14
Issue number	3
DOIs	https://doi.org/10.1016/j.ultsonch.2006.06.004
Publication status	Published - 2007 Mar

Keywords

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

ASJC Scopus subject areas

Chemical Engineering (miscellaneous)
Environmental Chemistry
Radiology Nuclear Medicine and imaging
Acoustics and Ultrasonics
Organic Chemistry
Inorganic Chemistry

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10.1016/j.ultsonch.2006.06.004

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title = "Physiochemical properties of digested sewage sludge with ultrasonic treatment",

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.",

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AU - Kim, Young Uk

AU - Khim, Jeehyeong

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N2 - 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.

AB - 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.

KW - Capillary suction time (CST)

KW - Dewaterability

KW - Specific supplied energy (E)

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Physiochemical properties of digested sewage sludge with ultrasonic treatment

Abstract

Keywords

ASJC Scopus subject areas

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