Difference between revisions of "Treadle pump"

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For wells down to 35 m, rope pumps are often five times cheaper and more sustainable than piston pumps. Evaluations show that rope pumps on communal wells are being maintained by the users, if introduced properly. 90% of rope pumps remain operational, even after many years. Because of its low cost, the pump is also popular for domestic use. A survey among 5,025 rural families in Nicaragua indicates that a rope pump increases income, even if used for domestic purposes only. Families with a pump earn US$ 220 per year more than families without a pump. In Nicaragua the pumps are now being produced commercially by 20 workshops. Different models of Rope pumps were introduced in Africa. This introduction has not always been successful: in some projects over 80% of the pumps do NOT work! However, with the "right" models and the "right" user training, upto 90% remain in operation in Africa, as the Victory model in Ghana and the Elephant model in Zimbabwe have proved.
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The treadle pump for irrigation was
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developed in the late 1970's in Bangladesh. After wide-scale promotion by IDE International
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Development Enterprise, they are now being produced in 300 local workshops and used by more  
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 +
than one million poor rural families that otherwise could not have afforded an irrigation
 +
 
 +
pump. With this technology, many families have increased their income. Some farmers who
 +
 
 +
started with this pedal pump have now bought a motorized pump. The treadle pump is cost
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 +
effective; it cost US$ 20 in Bangladesh and generates US$ 100 or more per year. Together,
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these pumps add over US$ 100 million every year to the GNP of Bangladesh. Production and
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sales are now sustainable without any external aid. The treadle pump is also being promoted
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in Africa where it is installed by organisations like Kickstart (former Approtec) and EW
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Enterprise Works. Models of the treadle pump like the Moneymaker and the Soka-pump are now
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widely used for small-scale "spray" irrigation.
  
 
[[Image:Rope_pump.PNG|thumb|right|150px|[[Rope pump | Rope pump ]], (Victory model) on a hand-dug of 20 meters deep well, made in a local workshop in northern Ghana ]]
 
[[Image:Rope_pump.PNG|thumb|right|150px|[[Rope pump | Rope pump ]], (Victory model) on a hand-dug of 20 meters deep well, made in a local workshop in northern Ghana ]]

Revision as of 15:33, 27 July 2007

Treadle pump icon.png

The treadle pump for irrigation was

developed in the late 1970's in Bangladesh. After wide-scale promotion by IDE International

Development Enterprise, they are now being produced in 300 local workshops and used by more

than one million poor rural families that otherwise could not have afforded an irrigation

pump. With this technology, many families have increased their income. Some farmers who

started with this pedal pump have now bought a motorized pump. The treadle pump is cost

effective; it cost US$ 20 in Bangladesh and generates US$ 100 or more per year. Together,

these pumps add over US$ 100 million every year to the GNP of Bangladesh. Production and

sales are now sustainable without any external aid. The treadle pump is also being promoted

in Africa where it is installed by organisations like Kickstart (former Approtec) and EW

Enterprise Works. Models of the treadle pump like the Moneymaker and the Soka-pump are now

widely used for small-scale "spray" irrigation.

Rope pump , (Victory model) on a hand-dug of 20 meters deep well, made in a local workshop in northern Ghana
Advantages Disadvantages
Significantly cheaper than piston pumps.

Easy to maintain.
Easy to train on maintenance.

Not all introduction programs have been successful.


Capacity

40 litres / min from 10 meters depth.

Costs

  • US$ 20-120 depending on model.

Applying conditions

  • Numbers: 50,000 in Nicaragua, 20,000 in Mexico, Honduras, Guatemala, Ghana, Zimbabwe, Tanaznia, Senegal.
  • Range of depth: 1-35 meter (60 m with two cranks).
  • Application Communal wells, houshold, irrigation.
  • Cost of introduction: US$ 10,000-20,000 per project, including 20 pumps, engineering and hands-on training. US$ 60,000-100,000 per project, including 1,000 pumps, production workshop and hands-on training.

Rope pump building manual

PRACTICA foundation and the Technical Training Programme of the ETC Foundation (TTP/ETC) have put together a really excellent manual on how to build rope pumps (PDF, 2.5 Mbyte). It is an 86 page long document with detailed instructions.

External links

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