Zeeman, G.Kujawa, K.Mes, de T.Z.D.Graaff, de M.S.Abu-Ghunmi, L.N.A.H.Mels, A.R.Meulman, B.Temmink, B.G.Buisman, C.J.N.Lier, van J.B.Lettinga, G.Sectie Milieutechnologiehttp://library.wur.nl/WebQuery/wurpubs/371755enjournalArticle0273-1223Based on results of pilot scale research with source-separated black water (BW) and grey water (GW), a new sanitation concept is proposed. BW and GW are both treated in a UASB (-septic tank) for recovery of CH4 gas. Kitchen waste is added to the anaerobic BW treatment for doubling the biogas production. Post-treatment of the effluent is providing recovery of phosphorus and removal of remaining COD and nitrogen. The total energy saving of the new sanitation concept amounts to 200 MJ/year in comparison with conventional sanitation, moreover 0.14 kg P/p/year and 90 litres of potential reusable water are produced2008 0273-1223 urn:nbn:nl:ui:32-371755 57 8 1207 1212