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  1. Wastewater treatment - Sludge, Disposal, Treatment | Britannica

    Dec 31, 2025 · Wastewater treatment - Sludge, Disposal, Treatment: The residue that accumulates in sewage treatment plants is called sludge (or biosolids). Sewage sludge is the solid, semisolid, or …

  2. Sludge - Wikipedia

    Sludge (possibly from Middle English slutch 'mud, mire', or some dialect related to slush) [1] is a semi-solid slurry that can be produced from a range of industrial processes, from water treatment, …

  3. SLUDGE Definition & Meaning - Merriam-Webster

    The meaning of SLUDGE is mud, mire; especially : a muddy deposit (as on a riverbed) : ooze. How to use sludge in a sentence.

  4. What Is Sludge in Water Treatment and How Is It Managed?

    Sep 2, 2025 · Water treatment is a process designed to remove contaminants from water, making it safe for various uses or returning it to the environment in a cleaner state. This complex purification …

  5. What Is Sludge? Understanding the Basics

    Apr 3, 2025 · In simplest terms, sludge is a thick, semi-solid by-product that forms when solids separate from liquids during various processes. While the concept sounds straightforward, sludge often …

  6. SLUDGE definition in American English | Collins English Dictionary

    Sludge is thick mud, sewage, or industrial waste. More than a million gallons of sludge has seeped into the water.

  7. SLUDGE | definition in the Cambridge English Dictionary

    Sludge is produced during the clarification and filtration process in the water treatment system. There are frequent puddles of coal sludge, and the dust irritates eyes and throats. Only big businesses, not …

  8. Sludge - definition of sludge by The Free Dictionary

    sludge (slʌdʒ) n. 1. mud, mire, or ooze; slush. 2. a deposit of ooze at the bottom of a body of water. 3. any of various mudlike deposits or mixtures.

  9. Sludge Permits and Registrations - Texas Commission on …

    Apr 14, 2025 · Lists activities involved in the disposal or use of sewage sludge, water treatment plant sludge, and domestic septage that require permitting from, registration with, or notification of the …

  10. Sludge: Types, Uses, Objectives and Methods of Removing Sludge

    Sludge exists in a solid or semi-solid state and is a by-product of wastewater treatment, sewage treatment, water treatment, or on-site sanitation systems. Its production is either primary or …