Ranney collector

A Ranney Collector is a patented type of radial well used to extract water from an aquifer with direct connection to a surface water source like a river or lake. The amount of water available from the collector is typically related more to the surface water source than to the piezometric surface of the aquifer.[1]

Ranney collector on the Mad River provides the water supply for communities surrounding Humboldt Bay.

Description

A caisson is constructed of reinforced concrete and installed into sand or gravel below the surface level of an adjacent river or lake.[1] Screened conduits (also referred to as laterals or lateral well screens) are extended horizontally from ports in the caisson about 60 meters (200 feet) into surrounding water-bearing alluvium.[2] The radial arrangement of screens forms a large infiltration gallery with a single central withdrawal point.[1] A single collector may produce as much as 25 million gallons per day.[2] Bank filtration of water through aquifer soils may reduce water treatment requirements.[2][3]

History

Texas petroleum engineer Leo Ranney drilled horizontally for oil in the early 1920s. The first Ranney collector for water was installed in London in 1933. Hundreds of Ranney collectors have been built since.[4]

gollark: > The language is unusual in having only one data type: a word, a fixed number of bits, usually chosen to align with the architecture's machine word and of adequate capacity to represent any valid storage address. For many machines of the time, this data type was a 16-bit word. This choice later proved to be a significant problem when BCPL was used on machines in which the smallest addressable item was not a word but a byte or on machines with larger word sizes such as 32-bit or 64-bit.[citation needed]
gollark: SOME people call it Basic Combined Programming Language.
gollark: Bee Control Programming Language is VERY cool!
gollark: (Bee Control Programming Language)
gollark: B and BCPL.

References
  1. Steel, E.W. & McGhee, Terence J. (1979). Water Supply and Sewerage. McGraw-Hill. pp. 478–487. ISBN 0-07-060929-2.
  2. Linsley, Ray K. & Franzini, Joseph B. (1972). Water-Resources Engineering. McGraw-Hill. pp. 104–112. ISBN 0-07-037959-9.
  3. Ray, Chittaranjan; Melin, Gina & Linsky, Ronald, eds. (2002). Riverbank Filtration, Improving Source-Water Quality: Water Science and Technology Library, vol. 43. Kluwer Academic Publishers & National Water Research Institute. pp. 73–280. ISBN 1-4020-1133-4.
  4. "What is a Ranney Collector Well". City of St. Helens, Oregon. Archived from the original on December 8, 2008. Retrieved 2010-08-23.

2003 (Volume 57 Number 10).

This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.