Pusat Studi Linkungan Ubaya


Research Detail

Publication: Proceeding of IWA “Advanced Sanitation”, Aachen- Germany, March 2007 & Journal Water Science & Technology 56:5 (2007) 141-148
Project Team: Almy Malisie2, Maria Prihandrijanti1, Ralf Otterpohl2
Research Detail:
Human excreta (faeces and urine) contribute only small volume in domestic wastewater but are one of the main causes of water pollution. On the other hand, they contain very valuable nutrients to be reused as anthropogenic fertilizer through proper collection, treatment and hygienisation process. To know the potential of nutrient recovery and reuse in Indonesia, a pilot scale source separation domestic wastewater system has been built in Surabaya and has showed so far promising results. Using urine diverting toilets, up to 86 % Nitrogen, 21% Phosphorous and 69 % Potassium from urine and 12 % of Nitrogen, 68 % of Phosphorous and 20 % of Potassium from the faecal matter respectively can be recovered.
The separated urine was stored for 6 months before usage as fertilizer for hygienic reasons, while the separated faecal matter was composted with worms (vermicomposting). In order to investigate the fertilizing effect, a preliminary cultivation experiment has been done on baby rose plants using different fertilizers for two months.
Keywords: anthropogenic fertilizer; Ecological Sanitation; vermicomposting