(3) the process of pumping large amounts of ground water from wells to lower the water table over a large area to allow an open pit or underground mine to operate in dry conditions. (4) the process of removing water from an underground mine or open pit, or from the surrounding rock or non-lithified materials. The term is also commonly used for the reduction of water content in concentrates, tailings and treatment sludges.
Removing water from solid or semisolid material (for instance, by centrifuging, filtering, settling or evaporation).
as it relates to industrial minerals mining, the withdrawal of ground water from an aquifer or saturated zone that may result in the lowering of the water level within the aquifer or saturated zone or a decline of the potentiometric surface within that aquifer or saturated zone. diminution: a lessening, decreasing, or reduction.
A CBM well typically begins dewatering with almost all water production and little or no natural gas production. The continuous production of water from a well that is dewatering reduces the water reservoir pressure on the coals. The reduced reservoir pressure enables the release of the gas within the coal to the wellbore. This results in an increase in the amount of gas production relative to the amount of water production. Dewatering ceases when peak gas production is reached.
Removal of water from an enclosure or a structure, such as an aquifer, by pumping or evaporation.
pumping water out, normally from underground, to prevent interference with or damage to construction, building, quarrying and similar activities or to works arising from such activities.
(1) The removal of water from a construction area, as by pumping from an excavation or location where water covers the planned working surface. (2) Lowering of the groundwater table in order to obtain a "dry" area in the vicinity of an excavation which would otherwise extend below water.
Elimination of water from a lake, river, stream, reservoir, or containment.
Removing non-hazardous, unwanted water.
A process used to remove water from biosolids or residuals producing dewatered cake that contains greater than 20 percent dry solids.
removal of water; used here to describe the removal of water to make treated wastewater sludge easier to handle.
The act of removing water.
condition in stream channel when all the water flow occurs within the permeable streambed sediments, so no surface water is left; common in small streams with considerable accumulations of gravel.
Use of trenches or other engineering techniques to expedite removal of water from a confined placement facility after dredging.
Sludge typically has a water content of greater than 90 percent, causing expensive recycling or disposal of pretreated sludge: Dewatering separates the liquids from the solids, thereby reducing recycling or disposal costs.
The removal of unwanted dirty or clear water containing no hazardous materials.
The removal of unwanted water (clear or dirty) but free from hazardous materials.
The process of removing water, especially by draining or pumping.