Acidic and hydrogen peroxide treatment of polyaluminum chloride (PACL) sludge from water treatment

J. H. Kwon; K. Y. Park; J. H. Park; S. H. Lee; K. H. Ahn

doi:10.2166/wst.2004.0545

Acidic and hydrogen peroxide treatment of polyaluminum chloride (PACL) sludge from water treatment

J. H. Kwon, K. Y. Park, J. H. Park, S. H. Lee, K. H. Ahn

GREEN SCHOOL (Graduate School of Energy and Environment)

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

5 Citations (Scopus)

Abstract

The water treatment sludge including coagulants cannot be easily removed by conventional dewatering methods. The possibility of hydrogen peroxide (H₂O₂) oxidation as a pretreatment to enhance the dewaterability of polyaluminum chloride (PACI) sludge from water works was investigated. H₂O₂ treatment alone was not effective but H₂O₂ treatment under acidic condition significantly reduced both the cake water content and specific resistance to filtration (SRF), indicating the enhancement of dewaterability and filterability. The filterability after acid/H₂O₂ treatment was comparable to polymer conditioning and even more dewatered cake than polymer conditioning was produced. By H₂O₂ combined with sulfuric acid (H₂SO₄), leached iron caused Fenton's reaction, which showed a potential to significantly reduce the amount of solids mass and to produce more compact cake with higher filterability.

Original language	English
Pages (from-to)	99-105
Number of pages	7
Journal	Water Science and Technology
Volume	50
Issue number	9
DOIs	https://doi.org/10.2166/wst.2004.0545
Publication status	Published - 2004

Keywords

Acid treatment
Dewatering
Fenton reaction
HO
PACI sludge

ASJC Scopus subject areas

Environmental Engineering
Water Science and Technology

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10.2166/wst.2004.0545

Cite this

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title = "Acidic and hydrogen peroxide treatment of polyaluminum chloride (PACL) sludge from water treatment",

abstract = "The water treatment sludge including coagulants cannot be easily removed by conventional dewatering methods. The possibility of hydrogen peroxide (H2O2) oxidation as a pretreatment to enhance the dewaterability of polyaluminum chloride (PACI) sludge from water works was investigated. H2O2 treatment alone was not effective but H2O2 treatment under acidic condition significantly reduced both the cake water content and specific resistance to filtration (SRF), indicating the enhancement of dewaterability and filterability. The filterability after acid/H2O2 treatment was comparable to polymer conditioning and even more dewatered cake than polymer conditioning was produced. By H2O2 combined with sulfuric acid (H2SO4), leached iron caused Fenton's reaction, which showed a potential to significantly reduce the amount of solids mass and to produce more compact cake with higher filterability.",

keywords = "Acid treatment, Dewatering, Fenton reaction, HO, PACI sludge",

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T1 - Acidic and hydrogen peroxide treatment of polyaluminum chloride (PACL) sludge from water treatment

AU - Kwon, J. H.

AU - Park, K. Y.

AU - Park, J. H.

AU - Lee, S. H.

AU - Ahn, K. H.

PY - 2004

Y1 - 2004

N2 - The water treatment sludge including coagulants cannot be easily removed by conventional dewatering methods. The possibility of hydrogen peroxide (H2O2) oxidation as a pretreatment to enhance the dewaterability of polyaluminum chloride (PACI) sludge from water works was investigated. H2O2 treatment alone was not effective but H2O2 treatment under acidic condition significantly reduced both the cake water content and specific resistance to filtration (SRF), indicating the enhancement of dewaterability and filterability. The filterability after acid/H2O2 treatment was comparable to polymer conditioning and even more dewatered cake than polymer conditioning was produced. By H2O2 combined with sulfuric acid (H2SO4), leached iron caused Fenton's reaction, which showed a potential to significantly reduce the amount of solids mass and to produce more compact cake with higher filterability.

AB - The water treatment sludge including coagulants cannot be easily removed by conventional dewatering methods. The possibility of hydrogen peroxide (H2O2) oxidation as a pretreatment to enhance the dewaterability of polyaluminum chloride (PACI) sludge from water works was investigated. H2O2 treatment alone was not effective but H2O2 treatment under acidic condition significantly reduced both the cake water content and specific resistance to filtration (SRF), indicating the enhancement of dewaterability and filterability. The filterability after acid/H2O2 treatment was comparable to polymer conditioning and even more dewatered cake than polymer conditioning was produced. By H2O2 combined with sulfuric acid (H2SO4), leached iron caused Fenton's reaction, which showed a potential to significantly reduce the amount of solids mass and to produce more compact cake with higher filterability.

KW - Acid treatment

KW - Dewatering

KW - Fenton reaction

KW - HO

KW - PACI sludge

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Acidic and hydrogen peroxide treatment of polyaluminum chloride (PACL) sludge from water treatment

Abstract

Keywords

ASJC Scopus subject areas

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