Clarification

• environment

Clearing action that occurs during wastewater treatment when solids settle out. This is often aided by centrifugal action and chemically induced coagulation in wastewater.
Source: Terms of the Environment

• geology

1. The cleaning of dirty or turbid liquids by the removal of suspended and colloidal matter. See also: recirculation of water
2. The concentration and removal of solids from circulating water to reduce the suspended solids to a minimum. BS, 5
   Source: Dictionary of Mining, Mineral, and Related Terms