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DEWATERING adalah proses pengeringan suatu area dengan memindahkan/menyedot air yang ada diarea tersebut.

Kalau kita kutip dari Wiki adalah sebagai berikut:


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Dewatering (pronounced /diːˈwɔːtərɪŋ/) 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.
http://www.indiaclickfind.com/category/pumps-spare-parts/== Dewatering by deep wells ==
A deep well typically consists of a borehole fitted with a slotted liner and an electric submersible pump. As water is pumped from a deep well, a hydraulic gradient is formed and water flows into the well forming a cone of depression around the well in which there is little or no water remaining in the pore spaces of the surrounding soil. Deep wells work best in soils with a permeability of k = 10−3 m/s to 10−5 m/s; the amount of drawdown that a well can achieve is limited only by the size of the pump.[1]
Deep wells can be installed in a ring around an excavation to lower the water level and maintain a safe, dry site. Several equations can be used to design deep well dewatering systems, however many of these are based on empirical data and occasionally fail. Practice and experience, along with a firm understanding of the underlying principles of dewatering, are the best tools for designing a successful system.[2] Some dewatering situations "are so common that they can be designed almost by rule of thumb".[3]
Deep wells are also used for aquifer testing and for groundwater drainage by wells.[4]

Diuraian diatas jelas sekali yang dibutuhkan adalah pompa dan pipa serta excavasi. Yang akan saya bahas disini adalah dari segi pipanya. Pipa yang lazim digunakan adalah pipa HDPE, mengapa ?

Berikut adalah alasan memilih pipa HDPE untuk dewatering:

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