Pumps being used to dewater a spillway at Baldhill Dam
Dewatering/diːˈwɔːtərɪŋ/ is the removal of water from a location. This may be done 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.[1]
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. The international business research company Visiongain valued the global dewatering pump market at $6.4 billion in 2018.[2]
^Alimohammadi, Masoumeh; Tackley, Hayden; Holmes, Baillie; Davidson, Kirklyn; Lake, Craig B.; Spooner, Ian S.; Jamieson, Rob C.; Walker, Tony R. (2020). "Characterising sediment physical property variability for bench-scale dewatering purposes". Environmental Geotechnics: 1–9. doi:10.1680/jenge.19.00214. S2CID 225315568.
^""Global Dewatering Pump Market to be valued at $6.4 billion in 2018" reports Visiongain". Visiongain. 5 September 2019. Retrieved 5 September 2019.
understanding of the underlying principles of dewatering, are the best tools for designing a successful system. Some dewatering situations "are so common that they...
mines. Where no dewatering techniques were effective the mine had to be shut down due to flooding. In the 15th century mine dewatering techniques made...
sewage treatment process. After dewatering sludge may be handled as a solid containing 50 to 75 percent water. Dewatered sludges with higher moisture content...
A dewatering screw press is a screw press that separates liquids from solids. A screw press can be used in place of a belt press, centrifuge, or filter...
oceanic slab. The release of water from hydrated minerals is termed "dewatering", and occurs at specific pressures and temperatures for each mineral,...
aids with dewatering but hinders the transport of cake in the dry beach. Hence, a tradeoff exists between cake conveyance and cake dewatering. A balance...
Gas well deliquification, also referred to as "gas well dewatering", is the general term for technologies used to remove water or condensates build-up...
potato juice separation, starch extraction, starch milk refination, dewatering of refined starch milk and starch drying.[citation needed] The potato...
electricity is used for aeration, pumping systems and equipment for the dewatering and drying of sewage sludge. Advanced sewage treatment plants, e.g. for...
dewatering, load, and haul of ore Underground/land-locked areas Mining only 8. Sample Hole/Pit or “ghetto” Manually dug out pit, blasting, dewatering...
gold, copper, coal and diamonds. Dewatering is an important process in mineral processing. The purpose of dewatering is to remove water absorbed by the...
municipal waste sludge dewatering, ready mix concrete water recovery, metal concentrate recovery, and large-scale fly ash pond dewatering. Many specialized...
while limited land availability may make aerobic digestion and mechanical dewatering preferable for cities, and economies of scale may encourage energy recovery...
contain 38 trillion cubic feet of gas. Coalbed methane can be recovered by dewatering the coal bed, and separating the gas from the water; or injecting water...
to adjust the ventilation. Although he did not suggest it himself, his dewatering devices such as the reverse overshot water-wheel likely were used in the...
springtime pulse flow to recharge the delta. Before 20th-century development dewatered the lower Colorado, a major tidal bore was present in the delta and estuary;...
ventilation. Although he does not suggest it himself, it is likely that his dewatering devices such as the reverse overshot water-wheel were used in the larger...
Knox Mine disaster showing inundated area and shafts used for escape and dewatering Date January 22, 1959 (1959-01-22) Location Jenkins Township, Pennsylvania...
materials either to co-rotate with the screw or to pass through with minimal dewatering. He wrote that "brewers' slops, slaughterhouse refuse" and other "soft...
ranges, for example, the Great Artesian Basin Dewatering of metamorphic rocks, which liberates water Dewatering of deeply buried sediments Hydrothermal circulation...
mineral processing industry for the classification of fine particles and dewatering of slurries. In Coal Washery Units : When we use magnetite and water as...
this placement allows the 50,180-square-foot (4,662 m2) cofferdam to be dewatered approximately 26 feet (7.9 m) below sea level to allow the construction...
control potential seepage, the MOW decided to install as a safety measure a dewatering tunnel to provide a means of partially lowering the water behind the dam...
dredge slurries are reduced to dry solids via a process known as dewatering. Current dewatering techniques employ either centrifuges, geotube containers, large...
life ends, the maintenance systems stop, including the dewatering systems. Without dewatering, the mines tend to flood with surface and groundwaters in...
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