Prospects for Managed Underground Storage of Recoverable Water (2008) / Chapter Skim
Currently Skimming:
Acronyms and Glossary
Acronyms and Glossary
Pages 277-294
The Chapter Skim interface presents what we've algorithmically identified as the most significant single chunk of text within every page in the chapter.
Select key terms on the right to highlight them within pages of the chapter.
From page 277... ...
Aquifer A formation, group of formations, or part of a formation that contains sufficient saturated per meable material to yield significant quantifies of water to wells and springs. Aquifer storage and Injection of water into a well for storage and recovery (ASR)
|
From page 278... ...
Bank filtration Extraction of groundwater from a well or caisson near or under a river or lake to induce infiltration from the surface water body, thereby improving and making more consistent the quality of water recovered. Base flow That portion of a stream's flow derived from ground water (as opposed to surface runoff and interflow)
|
From page 279... ...
Complexes of ten prevent the precipitation of metals. Confined aquifer An aquifer bounded above and below by units of distinctly lower hydraulic conductivity in which the pore water pressure is greater than atmos pheric pressure.
|
From page 280... ...
Darcy's Law A formula used to describe fluid flow in the sub surface. The law states that the velocity of flow through a porous medium is directly proportional to the hydraulic gradient (assuming that the flow is laminar and inertial forces can be neglected)
|
From page 281... ...
DOC Dissolved organic carbon. Drawdown Lowering of the water table or potentiometric surface as a result of pumping.
|
From page 282... ...
Hydraulic barrier A barrier to flow caused by system hydraulics, such as a line of ground water discharge caused by extraction wells. Hydraulic conductivity (K)
|
From page 283... ...
Infiltration Basin Synonymous with recharge basin. Infiltration rate Generally, the rate at which a soil under speci fied conditions can absorb falling rain or melting snow; in recharge, the rate at which water drains into the ground when a recharge basin is flooded, expressed as of water per unit time.
|
From page 284... ...
Maximum contaminant The maximum amount of a compound allowed level (MCL) in drinking water under the Safe Drinking Water Act.
|
From page 285... ...
Permeability The coefficient of proportionality between the flow rate (specific discharge) of a fluid through a permeable medium in response to the hydraulic gradient (driving force)
|
From page 286... ...
Secondary porosity is caused by fracture or weathering in a rock or sediment after it has been formed. Porous medium A subsurface zone composed of small rocks or sand particles with pores that can transmit or store water.
|
From page 287... ...
Unplanned indirect potable reuse occurs when a water supply is withdrawn for potable purposes from a natural surface or underground water source that is fed in part by the discharge of a wastewater effluent. The wastewater effluent is discharged to the water source as a means of dis posal and subsequent reuse of the effluent is a byproduct of the disposal plan.
|
From page 288... ...
Reverse osmosis resembles the membrane filtra tion process in that it involves the application of a high feed water pressure to force water through semipermeable membrane. In osmotic processes,
|
From page 289... ...
, v is the specific discharge (length/time) , d is a rep resentative grain diameter for the porous media (often taken as the 30% passing size from a grain size analysis using sieves - units of length)
|
From page 290... ...
Specific yield The term used to describe storage in unconfined aquifers. ‘It is defined as the volume of water that an unconfined aquifer releases from storage per unit surface area of aquifer per unit decline in the water table' (Freeze and Cherry, p.
|
From page 291... ...
In a confined aquifer, it is equal to the product of the hydraulic conductivity and the aq
|
From page 292... ...
purpose is the artificial recharge, underground storage, and recovery of project water. Unsaturated zone The zone between the land surface and the re gional water table.
|
From page 293... ...
WTP Wastewater Treatment Plant. BIBLIOGRAPHY Arizona Department of Water Resources.
|
From page 294... ...
1998. Issues in Potable Reuse: The Viability of Augmenting Drinking Water Supplies with Reclaimed Water.
|
Key Terms
This material may be derived from roughly machine-read images, and so is provided only to facilitate research.
More
information on Chapter Skim is available.