Study of Situation (click here)
At this moment, we are working in the villages of the region of well-known Bandiágara like the Dogón Country.
It is a region where are some 600 villages approximately that do not have provision of electrical energy and by all means they do not own automatic systems of water extraction.
The relief consists of determining the amount of villages, its population, the depth to which it is the water and the used method of extraction at present to determine the system necessary to install.
Different cases
Very small isolate villages (of 100 to 300 inhabitants) that own water between 20 and 80 meters of depth.
Villages concentrated among 600 and 1000 inhabitants with wells of 30 to 60 meters of depth.
The majority of the Villages has extraction system manual, this means that they own a well and they by hand throw buckets or buckets tied with a rope and of this form by means of a sheave or, raise the water (like in the average age, but in the 21st century).
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In the depths majors to the 60 meters they use animal to drag the rope the 60 or 80 meters, since manually it would be impossible to manipulate 60 meters of rope.
This is the situation most expensive and difficult to solve.
For the villages that own the water to depths smaller than the 40 meters, the solution consists of the implementation of electrical pumps fed by solar paddles with a system on storage caves and/or batteries for the work nocturne.
For the villages that already own pumps manuals, we are designing a system that allow to be reconciled to the pump, by means of an electrical motor of low power and with the energy of the solar paddles, to realize the movement of this pump, being avoided therefore the cost of installation of the underground pipe and obtaining the same benefit with a smaller cost.
Approximately between all the released villages, a total of 150,000 inhabitants meets and for this, the installation is needed approximately 300 systems of bombeocombinando those of profused major, those of profused minor and the connectable systems to the present pumps.
The region of Bandiágara owns a great fault that allows that some villages are located to 40 meters of altitude difference with respect to others.
We are studying the possibility of perforating the ground in the high part and of providing water from the slopes located to 40 meters of height towards the villages that are in the low part of the fault.
This solution would be a great advance since it allows a more continuous water provision and without using solar paddles and pumps.
From this point of view, the cost is reduced, but in exchange for this difference it is necessary to consider that is necessary to tube the water in distances of 6 km (from the village superior to the fault and from the fault to a distributer that gives water to each village).
Although the implementation is more difficult, the solution is more integral because it is a system that has a low level of fault and a high level of efficiency.
In addition, the water pressure would arrive approximately at 4Kg by square centimeter (due to the 40 meters of height).
The pipe must fulfill quality requirements because it must be resistant to the sun, temperature and pressure of the water.
This system is very efficient since it can throughout provide great amount with water the day, allowing the irrigation of great extensions of field, that today are unthinkable for these populations
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