sludge

That’s when a tank gets so low that drawing hits dregs — an all-but-unusable mix of oil sludge and debris — before a physical bottom is reached.

From MarketWatch ● Jun. 6, 2026

The disaster unleashed toxic sludge into the Kafue River, contaminating land and leaving residents without clean water.

From The Wall Street Journal ● May 1, 2026

They frequently appear in wastewater and can end up in biosolid fertilizer, also called sewage sludge, which is produced during wastewater treatment.

From Science Daily ● Apr. 11, 2026

This was a leader who rolled up his sleeves and stacked sandbags alongside firemen and volunteers, when toxic red sludge from a bauxite mine engulfed a Hungarian valley and threatened the Danube shore in 2010.

From BBC ● Apr. 5, 2026

The hole below was filled with a sludge of soiled water and worse, all the useless and unclean bits discarded during the slaughtering process.

From "The City Beautiful" by Aden Polydoros

"When sewage sludges are spread across the fields, those toxic compounds could be released into the air," Katz said.

From Science Daily ● Apr. 11, 2026

These little guys live in basically every natural setting in the world, including deserts, soils, and, in particularly unlucky cases, the sludges of the human body.

From Slate ● Mar. 8, 2024

While working in a lab in the Netherlands in the late 2000s, Strous noticed that a type of methane-feeding bacteria often found in lake sediments and wastewater sludges had a strange way of life.

From Scientific American ● Aug. 22, 2023

The targeted radioactive waste included plutonium-contaminated filters, graphite molds, sludges containing solvents and oxidized uranium generated during nuclear weapons production work at the Rocky Flats Plant in Colorado.

From Seattle Times ● Jan. 3, 2022

With regard to the manurial value of the resulting sludges, much difference of opinion has existed.

From Manures and the principles of manuring by Aikman, Charles Morton