n Water&Sanitation Africa - A circular sanitation approach

Volume 15 Number 1
  • ISSN : 1990-8857


No one manages waste better than Mother Nature; she excels at sanitation, hygiene and sustainability. Trees and grasses exude oxygen, leaves, fruits, seeds and cereals – all of which are a banquet for billions of other life forms. Animals provide a banquet of meat, milk and leather, etc. We, as humans, have an obligation to maintain this discipline so that our waste is a banquet for billions of life forms. Humans, for example, take up nutrition from the ground, the air and clean water. Our consumption transforms this into energy and excreta such as carbon dioxide, urine and faeces. The urine does not follow the same trajectory as the faeces. This maintains isolation where the urine is absorbed by the ground to be an excellent fertiliser with soluble nitrogen, potassium and soluble phosphate. If it is not used as a fertiliser, it remains a harmless potential fertiliser. Now, high-density living requires a different approach to solid waste; we need to introduce dehydration, incineration, isolation and dispersion to nature’s methods for better, faster and more hygienic results.

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