Digestion of matter suspended or dissolved in waste by microorganisms under favorable conditions of oxygenation.

Related Terms

PLUNGER

1. A wooden shaft with a large rubber suction cup at the end, used to clear plumbing traps and waste outlets. 2. The long rod or piston of a reciprocating pump.

MULTIDECK CLARIFIERS

Extraction units which remove pollutants from recycled plant waste water.

LANDFILL

Disposal of solid waste by burying in layers of earth in low ground.

SOUR WATER

Waste water containing malodorous materials, usually sulfur compounds.

INCINERATION AREA

An officially designated offshore area for the burning of chemical waste by specially equipped vessels. The depiction of incineration areas on charts (in conjunction with radio warnings) is necessary to insure that passing vessels do not mistake the burning of waste for a vessel on fire.

NUCLEAR WASTE

The by-product or waste from nuclear fission reactions.

WASTE LUBRICATION

A system of lubrication in which the lubricant is delivered to a bearing surface by cloth waste or yarn.

ECONOMIZER

A series of tubes located in the path of flue gases. Feedwater is pumped through these tubes on its way to the boiler in order to absorb waste heat from the flue gas.

WASTE FUEL

Any by-product fuel that is waste from a manufacturing process.

HOG FUEL

Waste wood used for fuel consisting mostly of bark and wood particles.

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