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53 items found (Showing 1 - 10)
  1. The world needs to produce an estimated 60 percent more food by 2050 to ensure global food security, and it must do so while conserving and enhancing the natural resource base. Water is a major input in the provision of food – from production in the field through all the steps in the value chain....
  2. Rating: 4.0 - 1 Vote
    1999-03-19 Three programs in Honduras have been looking for ways that poor hillside farmers can capture rainwater in their own fields and hold it there for two or three months. This water could then be used for supplemental irrigation during droughts or for extending the cropping season into the dry season....
  3. Rating: 3.0 - 1 Vote
    2005-07-20 “Gray water” (also “grey water,” “graywater” or “greywater”) is the term used to describe wastewater from dish washing, laundry, bathing, and rinsing. (Note: the term gray water does not refer to toilet waste, which is often called “black water.”) Although gray water does not need extensive...
  4. Hydraulic ram water pumps use downhill water pressure to pump water much higher than it started, with no other power needed. A 20ft fall is enough to push water 150 feet above the source or more. Or as little as a 2ft fall between the water source and the pump at a flow rate of 1 to 3 gallons per...
  5. Rating: 3.0 - 1 Vote
    2006-01-20 Seeds ofMoringa oleiferacan be used to treat water in an emergency or disaster situation. Studies since the early 1970’s have found the seeds to be highly effective in removing suspended particles from water with medium to high levels of turbidity.
  6. Rating: 2.0 - 1 Vote
    1997-07-19 Some uses of water hyacinth - ruminant feed,handmade paper,nutrition . . . etc.
  7. Rating: 3.0 - 1 Vote
    1996-07-19 Solar water disinfection can be used to reduce bacteria counts in small volumes of drinking water at the individual household level.
  8. Rating: 5.0 - 1 Vote
    2011-01-01 A sand dam is a reinforced concrete wall built across a seasonal river to hold underground water in sand (see above photo of Nzaaya Muisyo sand dam, Eastern province, Kenya). It is initially built one meter high and up to 90 meters across. During the heavy and erratic seasonal rains, the water...
  9. 2010-01-01 The purpose of this document is to show several water pump designs constructed from PVC pipe, explain how to manufacture them, and discuss pump performance and how to improve on these designs. What’s Inside: Pump Design Manufacturing Process Pump Performance Appendix