Sludge vs. Sewage

Sludge is a semi-solid slurry that can be produced from a range of industrial processes, from water treatment, wastewater treatment or on-site sanitation systems. For example, it can be produced as a settled suspension obtained from conventional drinking water treatment, as sewage sludge from wastewater treatment processes or as fecal sludge from pit latrines and septic tanks.

Sewage (or domestic sewage, domestic wastewater, municipal wastewater) is a type of wastewater that is produced by a community of people. It is characterized by volume or rate of flow, physical condition, chemical and toxic constituents, and its bacteriologic status (which organisms it contains and in what quantities).

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

Liquid and solid waste carried off in sewers or drains.

an unattractive muddy shade of brown or green

A suspension of water and solid waste, transported by sewers to be disposed of or processed.

sea ice newly formed in small pieces.

(obsolete) sewerage.

Semisolid material such as the type precipitated by sewage treatment.

The contents of a sewer or drain; refuse liquids or matter carried off by sewers

Mud, mire, or ooze covering the ground or forming a deposit, as on a riverbed.

Sewerage, 2.

Finely broken or half-formed ice on a body of water, especially the sea.

waste matter carried away in sewers or drains

A semisolid mass composed of an aggregation of cells (such as red blood cells in blood vessels) or particulate matter (such as cholesterol crystals and calcium salts in bile).

To form sludge.

Solids separated from suspension in a liquid.

A residual semi-solid material left from industrial, water treatment, or wastewater treatment processes.

A sediment of accumulated minerals in a steam boiler.

A mass of small pieces of ice on the surface of a body of water.

sludge metal

To slump or slouch.

(intransitive) To slop or drip slowly.

Mud; mire; soft mud; slush.

Small floating pieces of ice, or masses of saturated snow.

See Slime, 4.

Anything resembling mud or slush; as: (a) A muddy or slimy deposit from sweage. (b) Mud from a drill hole in boring. (c) Muddy sediment in a steam boiler. (d) Settling of cottonseed oil, used in making soap, etc. (e) A residuum of crude paraffin-oil distillation.

the precipitate produced by sewage treatment

any thick messy substance