Glossary D

The Environmental Glossary. Letter D +++ Popular Articles: 'Deposition', 'Degradation', 'Diesel'

A Diffuse radiation is the sunlight received indirectly, as a result of scattering due to clouds, fog, dust, moisture vapor or other substances in the atmosphere.

A Diffused Air is a type of Aeration that forces oxygen into sewage by pumping air through perforated pipes inside a holding tank.

A Diffusers And Grilles is Components of the ventilation system that distribute and return air to promote air circulation in the occupied space.

A Diffusion is the movement of suspended or dissolved particles (or molecules) from a more concentrated to a less concentrated area.

A Digester is In wastewater treatment, a closed tank; in solid-waste conversion, a unit in which bacterial action is induced and accelerated in order to break down organic Matter and

A Digestion is the biochemical Decomposition of organic matter, resulting in partial gasification, liquefaction, and mineralization of pollutants.

- Digital line graph: A digital line graph (DLG) is Digital data produced by the U.S.

A dike or levee (also embankment, floodbank or stopbank) is a ridge, fill or wall that serves to regulate the water level of a nearby body of water for various purposes, primarily to prevent flooding. They may be naturally-occurring or artificially constructed.

A Diluent is any liquid or solid material used to dilute or carry an active ingredient.

A Dilution Ratio is the relationship between the volume of water in a stream and the volume of incoming water. It affects the ability of the stream to assimilate waste.

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