Sedimentation Tanks
Wastewater tanks in which floating wastes are skimmed off and settled solids are removed for disposal.
Source: Terms of the Environment ...
First steps in wastewater treatment; screens and sedimentation tanks are used to remove most materials that float or will settle. Primary treatment removes about 30 percent of carbonaceous biochemical oxygen demand from domestic sewage.
Primary wastewater treatment: First step in wastewater treatment where screens and sedimentation tanks are used to remove most materials that float or settle.
 See also: Water, Wastewater, Sediment, Waste, Sedimentation
  
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