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Konferensartikel2004

Adapting the nutrient content of urine and faeces in different countries using FAO and Swedish data : Proceedings of the 2nd International Symposium on Ecological Sanitation, Incorporating the 1st IWA Specialist Group Conference on Sustainable Sanitation 7th-11th April, Lübeck, Germany

Jönsson Håkan, Vinnerås Björn

Sammanfattning

In a sustainable society, the plant nutrients in excreta need to be recycled to arable land as fertiliser. New source separating sewage systems are promising in this respect. To evaluate these and further develop them, their nutrient recycling should be quantified. To do this, default values on the plant nutrient content of urine and faeces are needed. This paper presents a method for calculation of such default values from easily available statistics on the food supply and default values were estimated for five countries. The estimated values were compared with those reported for one country. The agreement was good for nitrogen and phosphorus. Values of the total nutrient excretion were calculated and apportioned between urine and faeces. Urine contained most of the nutrients, but iss proportion of the total nutrients varies due to varying digestibility of the diet, making precise estimation hard

Nyckelord

Plant nutrients; excreta; urine; faeces; composition; diet; countries; regions

Publicerad i


Utgivare: Ecosan Symposium, Lübeck

Konferens

The 2nd International Symposium on Ecological Sanitation Incorporating the 1st IWA Specialist Group 'Conference on Sustainable Sanitation