sludge

US /slʌdʒ/
UK /slʌdʒ/
"sludge" picture
1.

汚泥, ヘドロ, 泥

thick, soft, wet mud or a similar viscous mixture of liquid and solid components, especially the product of an industrial or refining process.

:
The riverbed was covered in thick, black sludge.
川底は分厚い黒い汚泥で覆われていた。
Waste water treatment plants produce a lot of sewage sludge.
下水処理場では大量の汚水汚泥が発生する。