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10th International Rainwater Catchment Systems Conference
"Rainwater International 2001"
Mannheim, Germany - September 2001

Section 5: Legal and Political Aspects of Rainwater Harvesting

Paper 5.19

Ecological Sanitation - Dehydration Toilets

Hans Schattauer
Dept. for Sanitary Engineering and Water Pollution Control (SIG)
Institute for Water Provision, Water Ecology &Waste Management (IWGA)
University of Agricultural Sciences
Vienna
Austria
email: mail@iwga-sig.boku.ac.at

Introduction

The two most commonly used sanitation technologies today are pit toilets (drop and store indefinitely)and flush toilets (flush and forget).A flush toilet is basically a machine for mixing human urine, faeces and water. The mixture is than removed from private responsibility by sewers making communities responsible for proper disposal. Conventional waterborne sewage systems have proven to be inappropriate to solve sanitation needs in developing countries. It is too costly and approx.90%of the sewage is discharged untreated, contaminating ground waters, rivers, lakes and coastal areas.

At the same time soil-fertility is decreasing and nutrients from human urine, rich in nitrogen and phosphates would be needed in agriculture.

There is an enormous challenge to rethink and to raise the status of sanitation and a need for new approaches, techniques and methods.

Ecological sanitation as a closed cycle of nutrients in the eco-system could help to overcome these problems, taking care of the environment by protecting resources underground, upstream and downstream of the settlements.

PDF of full document (4pp, 142kb)


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