sludge

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

fanghiglia, fango, melma

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.
Il letto del fiume era coperto di fanghiglia spessa e nera.
Waste water treatment plants produce a lot of sewage sludge.
Gli impianti di trattamento delle acque reflue producono molti fanghi di depurazione.