Annwyl Gyfeillion
Mae 'dewatering' wedi bod yn achosi pen tost imi ers dyddiau a byddwn yn
ddiolchgar am unrhyw gymorth neu awgrymiadau
Dyma'r diffiniad
"*Dewatering* (pronounced
/diːˈwɔːtərɪŋ/<http://en.wikipedia.org/wiki/Help:IPA_for_English>)
is the removal of water <http://en.wikipedia.org/wiki/Water> from solid
material or soil by wet classification,
centrifugation<http://en.wikipedia.org/wiki/Centrifugation>
, filtration <http://en.wikipedia.org/wiki/Filtration>, or similar
solid-liquid separation
processes<http://en.wikipedia.org/wiki/Separation_process>,
such as removal of residual liquid from a filter
cake<http://en.wikipedia.org/wiki/Filter_cake>
by a filter press <http://en.wikipedia.org/wiki/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<http://en.wikipedia.org/wiki/Stream_bed>
, construction site <http://en.wikipedia.org/wiki/Construction_site>,
caisson <http://en.wikipedia.org/wiki/Deep_foundation>, or mine
shaft<http://en.wikipedia.org/wiki/Shaft_mining>,
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<http://en.wikipedia.org/wiki/Water_table>.
This frequently involves the use of submersible "dewatering"
pumps<http://en.wikipedia.org/wiki/Pump>,
centrifugal ("trash") pumps, eductors, "dewatering" by electro osmosis, or
application of vacuum <http://en.wikipedia.org/wiki/Vacuum> to well points."
Rwy'n cymryd bod 'dewatering' yn wahanol i sychu -
Diolch
Muiris
