Dewatering is the removal of water from solid material or soil
by wet classification, centrifugation, filtration, or similar
solid-liquid separation processes, such as removal of residual
liquid from a filter cake by a filter press as part of various
industrial processes.
Construction
dewatering, unwatering, or water control are common terms
used to describe removal or draining groundwater or surface
water from a riverbed, construction site, caisson, or mine
shaft, by pumping or evaporation. On a construction site,
this dewatering may be implemented before subsurface
excavation for foundations, shoring, or cellar space to
lower the water table. This frequently involves the use of
submersible "dewatering" pumps, centrifugal ("trash") pumps,
eductors, or application of vacuum to well points. |
