Sludge Watch ==> Sweden - source separating feces/urine recycling - a new model of sanitation

[maureen.reilly at sympatico.ca]

Sludgewatch Admin

It is worthwhile visiting the the website to see the links and the photos.

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http://www.holon.se/folke/projects/vatpark/Kth/guntha.shtml


WASTE WATER TREATMENT BY SOURCE SEPARATION
biologically based grey water purification

Proceedings from the
UNESCO symposium on Integrated Water Management in Urban Areas
Lund, 26-30 september 1995



Folke Günther
Department of Systems Ecology, Stockholm University, 106 91 Stockholm, 
Sweden

Key words:
biological purification, grey water, non-mixing system, nutrient use, 
phosphorus, regenerative cycle, water recycling.


Abstract:
The importance of recycling nutrients is discussed, both regarding the 
structure of natural systems and ecological adaptation. The conventional 
waste water management system is unable to purify the sewage water to a 
higher grade than the nutrient content of the grey water. Biological plants 
are not well adapted to the purification of a mixed sewage, but if source 
separating toilets are used, the urine and faeces could be used for 
agriculture, and the grey water could be efficiently purified with 
biological methods to a grade that it can be re-used in the settlement. An 
outline for a purification plant based on riparian ecotones and buffer ponds 
is provided. A plant of this type was built in Kalmar, Sweden in 1996.