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    sludge
    [sləj]
    noun
    sludge (noun) · sludges (plural noun)
    1. thick, soft, wet mud or a similar viscous mixture of liquid and solid components, especially the product of an industrial or refining process.
      • dirty oil, especially in the sump of an internal combustion engine.
      • sea ice newly formed in small pieces.
    Origin
    early 17th century: of uncertain origin; compare with slush.
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    What does sludge mean?
    Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free! Can you solve 4 words at once? Get Word of the Day daily email! The meaning of SLUDGE is mud, mire; especially : a muddy deposit (as on a riverbed) : ooze. How to use sludge in a sentence.

    Sludge Definition & Meaning - Merriam-Webster

    merriam-webster.com
    What is sludge & how is it produced?
    Sludge is a semi-solid slurry that can be produced from a range of industrial processes, from water treatment, wastewater treatment or on-site sanitation systems.

    Sludge - Wikipedia

    en.wikipedia.org
    What is sewage sludge?
    General Sludge: Semi-solid waste from industrial operations, containing both solids and liquids. Sewage Sludge: Residual material from sewage treatment, mainly from primary and secondary treatment stages. Activated Sludge: Created during biological wastewater treatment with a microbial culture that decomposes organic matter.

    Sludge: Types, Treatment, and Sustainable Management - AS Engineers

    theasengineers.com
    Is sludge a solid waste?
    The US EPA Definition Like the term “solid waste”, “ sludge” when used by the EPA can be confusing. It can be found in 40 CFR 261.2 as part of EPA’s description of what wastes may and may not be a solid waste (more on that below) . The reason for this confusion is that the EPA definition of a sludge differs from the common English definition:

    What is a Sludge? The US EPA Definition - Daniels Training Services

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  3. Merriam Webster
    https://www.merriam-webster.com/dictionary/sludge

    Sludge Definition & Meaning - Merriam-Webster

     
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    What is a Sludge? The US EPA Definition - Daniels …

    WEBMay 17, 2012 — Sludge is a waste generated from a process to remove contaminants from air or water, according to the EPA. Learn the …

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    • Wikipedia
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      Sludge - Wikipedia

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      SLUDGE Definition & Meaning - Dictionary.com

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      SLUDGE | English meaning - Cambridge Dictionary

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      Sludge - definition of sludge by The Free Dictionary

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      SLUDGE | definition in the Cambridge English Dictionary

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      SLUDGE definition and meaning | Collins English Dictionary

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      sludge noun - Definition, pictures, pronunciation and usage notes ...

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      Gallbladder Sludge: Symptoms, Causes, and Treatment - Healthline

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      SLUDGE | definition in the Cambridge Learner’s Dictionary

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      sludge, n. meanings, etymology and more - Oxford English …

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      SLUDGE Synonyms: 29 Similar Words - Merriam-Webster

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      SLUDGE definition in American English - Collins Online Dictionary

    • U.S. Environmental Protection Agency
      https://www.epa.gov/biosolids/basic-information-about-biosolids

      Basic Information about Biosolids | US EPA - U.S. Environmental ...

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