930 resultados para excess sludge
Hydrologic effects of storing liquified sewage sludge on strip-mined land, Fulton County, Illinois /
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Mode of access: Internet.
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"No. 24."
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Includes bibliographical references.
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"Authors: James J. Janssen and S. Alan Keller." -- Bibliographic data sheet.
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Mode of access: Internet.
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"Printed: November 1987."
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"Adopted March 1, 1952."
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"ILENR/AE-92/02."
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"Contract: EA99"
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"SWS Contract report 429." -- Cover.
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Mode of access: Internet.
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"B-223943"--P. [1].
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Mode of access: Internet.
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Thesis (Master's)--University of Washington, 2016-06
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The aim of this paper is to investigate the effect of shear history on activated sludge flocculation dynamics and to model the observed relationships using population balances. Activated sludge flocs are exposed to dramatic changes in the shear rate within the treatment process, as they pass through localised high and low mixing intensities within the aeration basin and are cycled through the different unit operations of the treatment process. We will show that shear history is a key factor in determining floc size, and that the floc size varies irreversibly with changes in shear rate. A population balance model of the flocculation process is also introduced and evaluated.