Decant: To draw off the upper layer of liquid after the heaviest material (a solid or another liquid) has settled.
Decarbonation: The process of removing carbon dioxide from water, using contact towers or air scrubbers.
decant To draw off the upper layer of liquid-suspended solids mixture after the heavier material has settled.
decantation ...
decant
to remove the liquid portion of a settled mixture without disturbing the sediment.
dechlorination process ...
Processes which employ aerobic or anaerobic microorganisms and result in decanted effluents and separated sludge containing microbial mass together with pollutants.
When bringing a new slow sand filter bed into use, raw water is carefully decanted onto the filter material to a water depth of one to three metres, depending on the size of the filter bed.
The percent moisture determined in this manner also includes contributions from all compounds that may volatilize at or below 105C, including water. Percent moisture may be determined from decanted samples and from samples that are not decanted.
 See also: Waste, Treatment, Water, Toxic, Liquid
  
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