sábado, 21 de abril de 2012

Constructing an ecosan toilet -- A film from UNICEF

Ecological Sanitation is an important new approach to sanitation, which is truly sustainable. It uses almost no water in its operation, and human waste products are used as fertilizer. So three major objectives are achieved:
-- saving on water, a critically scarce resource
-- non-pollution of the environment by human waste, a major cause of disease and loss of human life
-- 'closing the nutrient cycle' : the nutrients (primarily Nitrogen, Phosphorus, Potassium, and carbon matter) in our excreta goes back into the soil for re-use by plants. Instead of a one-way process where chemicals are mined and used for each crop produced, the same chemicals are returned to the soil for reuse.

This movie was created by UNICEF