Pumping station
From Wikipedia, the free encyclopedia
Pumping stations are facilities including pumps and equipment for pumping fluids from one place to another. They are used for a variety of infrastructure systems that many people take for granted, such as the supply of water to canals, the drainage of low-lying land, and the removal of sewage to processing sites.
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A pumping station is, by definition, an integral part of a Pumped-storage hydroelectricity installation.
[edit] Canal water supply
In countries with canal systems, pumping stations are also frequent. Because of the way the system of canal locks work, water is lost from the upper part of a canal each time a vessel passes through. Also, most lock gates are not watertight, so some water leaks from the higher levels of the canal to those lower down. Obviously, the water has to be replaced or eventually the upper levels of the canal would not hold enough water to be navigable.
Canals are usually fed by diverting water from streams and rivers into the upper parts of the canal, but if no suitable source is available, a pumping station can be used to maintain the water level. An excellent example of a canal pumping station is the Claverton Pumping Station on the Kennet and Avon Canal in southern England. This pumps water from the nearby River Avon to the canal using pumps driven by the power of the river itself.
Where no external water supply is available, back pumping systems may be employed. Water is extracted from the canal below the lowest lock of a flight and is pumped back to the top of the flight, ready for the next boat to pass through. Such installations are usually very small.
[edit] Land drainage
When low lying areas of land are drained, the general method is to dig drainage ditches. However, if the area is below sea level then it is necessary to pump the water upwards into water channels that finally drain into the sea.
The Victorians understood this concept, and in the United Kingdom they built pumping stations with large water pumps, powered by large steam engines to accomplish this task. In Lincolnshire, large areas of wetland at sea level, called The Fens were turned into rich arable farmland by this method. The land is full of nutrients because of the accumulation of sedimentary mud that created the land initially.
Elsewhere, pumping stations are used to remove water that has found its way into low-lying areas as a result of leakage or flooding (in New Orleans, for example).
[edit] Sewerage systems
In the case of sewage collection systems, pumping stations are used to move wastewater to higher elevations; for example, to pass over a hilly area en-route to the treatment plant. In the event of a failure of the pumping station, a sanitary sewer overflow can occur, involving discharge of raw sewage to the environment.
[edit] Pumped-storage schemes
A pumped-storage scheme is a type of power station for storing and producing electricity to supply high peak demands by moving water between reservoirs at different elevations.
Typically, water is channelled from a high-level reservoir to a low-level reservoir, through turbine generators that generate electicity. This is done when the station is required to generate power. During low-demand periods, such as overnight, the generators are reversed to become pumps that move the water back up to the top reservoir.
- See also: List of pumped-storage plants
[edit] List of pumping stations
There are countless thousands of pumping stations throughout the world. The following is a list of those described on Wikipedia.
[edit] Great Britain
In Great Britain, a considerable number of former pumping stations have been preserved and opened as museum attractions. The majority are, or were steam-powered, except as identified:
[edit] Canal water supply
- Claverton Pumping Station, on the Kennet and Avon Canal, near Bath (water-powered)
- Crofton Pumping Station, on the Kennet and Avon Canal, near Great Bedwyn
- Leawood Pump House, on the Cromford Canal in Derbyshire
- Smethwick Engine, now removed from original site to Birmingham Thinktank
[edit] Groundwater supply
Used to pump water from a well into a reservoir
- Mill Meece Pumping Station, in Staffordshire
- Papplewick Pumping Station, Nottinghamshire (pumped from a 200ft deep well)
[edit] Hydraulic power station
- Wapping Hydraulic Power Station, London (converted to electricity, now an arts centre and restaurant)
[edit] Land drainage
- Brunel Engine House, Rotherhithe, East London (extracted water from Thames Tunnel; original engine replaced (but no longer live steam))
- Stretham Old Engine, Stretham, Cambridgeshire
- Westonzoyland Pumping Station, Somerset
[edit] Public water supply
Used to pump drinking water from a reservoir into a water supply system.
- Edgbaston Waterworks, Birmingham (probably not a 'museum' site)
- Kempton Park Pumping Station, London
- Kew Bridge Pumping Station, Kew Bridge, London
- Langford Pumping Station ("Museum of Power"), Essex
[edit] Sewage
- Abbey Pumping Station, Leicester
- Abbey Mills Pumping Station, in North London. (steam engines no longer present)
- Claymills Pumping Station, near Burton upon Trent
- Coleham Pumping Station, Coleham, near Shrewsbury
- Crossness Pumping Station, in South London
- Low Hall Pumping Station, Walthamstow, North London
- Markfield Beam Engine, Tottenham, London
[edit] Netherlands
[edit] Land drainage
- Cruquius pumping station (Operational, but no longer steam-powered.)
- – a 6-beam Cornish engine with the largest-cylinder (3.5m (144in) diameter) in the world.
- ir.D.F. Woudagemaal, (ir. Wouda pumping station) (world's largest steam-powered pumping station)
[edit] See also
[edit] Waterworks railways
- Colne Valley Waterworks railway, Eastbury Pumping Station, near Watford
- Metropolitan Water Board Railway, Kempton Park, London
- List of similar narrow gauge railways in Great Britain
