Definitions for "Sewage treatment"
The artificial removal of pollutants from sewage, their transformation into an inert state, and the altering of the objectionable constituents by controlled physical, chemical, or biological processes.
The processing of wastewater for the removal or reduction in the level of dissolved solids or other undesirable constituents.
Mechanical treatment of sewage in which large solids are filtered out by screens and suspended solids settle out as sludge in a sedimentation tank.