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training for enhanced understanding andknowledge is offered to managementteam members, operators, governmentofficials and others from the localcommunity and beyond. The apartmentowner-residents also undergo training forawareness and understanding of the ecotownmeasures.Apartment BuildingsFaeces collection binsUrine-diverting porcelain toiletStraight-drop urine diversion toiletdesignFaecal material is retained in dry form inplastic bin containers, removed from thebuilding basements and composted andsanitised along with household organicsin the on-site ecostation for reuse as soilimprovement. Thus, the community isoffered sanitation services that workwithout water, while the water andnutrient cycles are being closed.Water supply is restricted to kitchen andbath use and designed at about 80 litres/person/day. The greywater is collectedand treated on-site in a septic tankincluding aeration, post-chlorination andstorage pond prior to reuse and surfacesoildischarge during the winter months.Storm and runoff water is drained alongthe natural contours of the landscapewithout any mixing with the householdproducts. Household organics and solidwaste fractions are source-separated andbrought to the on-site ecostation forcomposting and reuse.The project staff has been organised into aseries of R&D and operational teamsspecialising in various components e.g.infrastructure planning and installation(roads, water supply, power, IT,ventilation), housing architecture andconstruction, eco-toilet installation andmaintenance, urine and faeces handling,greywater processing, composting, agroreuse,communications, and communitysensitisation,. Local universities areengaged in R&D assessments. EcosanTurning-bowl mechanismVentilation for the faeces collectionsystemOn-site storage pond for treatedgreywater that will be reusedOnce in full operation in late 2007, andafter the international scientific ecosanconference in August 2007, the modeltown will be the object of furtherperformance studies by sanitation andwater specialists, urban planners, urbanagriculturalists, finance experts andeconomists. In particular, the performanceof the ecosan system will be evaluatedand economic and environmental analysesfor comparisons with conventional practiceswill be made. Follow-up informationand promotion in regard to policydevelopment at local, provincial andnational levels is a collaborative effortbetween Dongsheng, the EcoSanResProgramme and the government of InnerMongolia. Since inception, the eco-towndevelopment has been subject ofconsiderable international attention.Authors• Sun Lixia (Chief) Li Rui (Vice-Chief):Erdos Eco-Town Project Office,Dongsheng District Government• Arno Rosemarin, Xiao Jun, UnoWinblad, Zhu Qiang, Guoyi Han,Cecilia Ruben, Ian Caldwell:Stockholm Environment Institute (SEI)EcoSanRes Programme – www.ecosanres.orgStockholm Environment Institute – www.sei.seKräftriket 2B, SE-106 91 Stockholm, SwedenTel +46 8 674 7070, Fax +46 8 674 7020EcoSanRes is funded by Sida (SwedishInternational Development Cooperation Agency)May 2007