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    Conditioning of Wastewater Sludge from Science-Based Industrial Park Using Freezing and Thawing

    Source: Journal of Environmental Engineering:;2004:;Volume ( 130 ):;issue: 012
    Author:
    M. R. Chang
    ,
    L. I. Chiang
    ,
    D. J. Lee
    ,
    J. C. Liu
    ,
    N. M. Wu
    ,
    W. C. Chen
    ,
    B. M. Hsu
    DOI: 10.1061/(ASCE)0733-9372(2004)130:12(1552)
    Publisher: American Society of Civil Engineers
    Abstract: The Hsinchu Science-based Industrial Park (HSIP) is the main manufacturing base of “high-tech” commodities of Taiwan. The treatment of wastewater of HSIP produces hard-to-dewater sludge, at a rate of 80 Mg/day, which is resistant to chemical conditioning, whose disposal is costly. The use of chemical flocculation and physical conditioning, including heating and freezing and thawing, on the dewaterability of HSIP sludge was examined in this Note. The dewaterability of the original sludge was poor, and neither chemical flocculation nor thermal heating enhanced its dewatering. However, the freezing and thawing could release up to 83% of moisture from the sludge body; in line with this occurrence, the settleability and filterability of the sludge were considerably enhanced. The ice front developed during freezing, which could destroy the floc network, release the interstitial water, and might correspond to the successful conditioning using freezing and thawing.
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      Conditioning of Wastewater Sludge from Science-Based Industrial Park Using Freezing and Thawing

    URI
    http://yetl.yabesh.ir/yetl1/handle/yetl/60342
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    • Journal of Environmental Engineering

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    contributor authorM. R. Chang
    contributor authorL. I. Chiang
    contributor authorD. J. Lee
    contributor authorJ. C. Liu
    contributor authorN. M. Wu
    contributor authorW. C. Chen
    contributor authorB. M. Hsu
    date accessioned2017-05-08T21:42:52Z
    date available2017-05-08T21:42:52Z
    date copyrightDecember 2004
    date issued2004
    identifier other%28asce%290733-9372%282004%29130%3A12%281552%29.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/60342
    description abstractThe Hsinchu Science-based Industrial Park (HSIP) is the main manufacturing base of “high-tech” commodities of Taiwan. The treatment of wastewater of HSIP produces hard-to-dewater sludge, at a rate of 80 Mg/day, which is resistant to chemical conditioning, whose disposal is costly. The use of chemical flocculation and physical conditioning, including heating and freezing and thawing, on the dewaterability of HSIP sludge was examined in this Note. The dewaterability of the original sludge was poor, and neither chemical flocculation nor thermal heating enhanced its dewatering. However, the freezing and thawing could release up to 83% of moisture from the sludge body; in line with this occurrence, the settleability and filterability of the sludge were considerably enhanced. The ice front developed during freezing, which could destroy the floc network, release the interstitial water, and might correspond to the successful conditioning using freezing and thawing.
    publisherAmerican Society of Civil Engineers
    titleConditioning of Wastewater Sludge from Science-Based Industrial Park Using Freezing and Thawing
    typeJournal Paper
    journal volume130
    journal issue12
    journal titleJournal of Environmental Engineering
    identifier doi10.1061/(ASCE)0733-9372(2004)130:12(1552)
    treeJournal of Environmental Engineering:;2004:;Volume ( 130 ):;issue: 012
    contenttypeFulltext
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