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, …

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

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 …

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 …

Jan 14, 2026 · Noun sludge (countable and uncountable, plural sludges) Solids separated from suspension in a liquid.

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 …

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.

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

WordReference Random House Learner's Dictionary of American English © 2025 sludge /slʌdʒ/ n. [uncountable] mud, mire, or ooze; slush. a deposit of ooze at the bottom of a body of water. Civil …

Mar 21, 2023 · Sludge is a by-product of the wastewater treatment process, consisting of organic and inorganic solids suspended in water. Sludge treatment entails various processes and techniques …