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12007-08-27/31-Sustainable cities and villages, DongSheng, China
Ecological sanitation within GTZ‘s main building in Eschborn – a demonstration and research project
Sören Rüd, Christine WernerDeutsche Gesellschaft für Technische Zusammenarbeit (GTZ) GmbH
ecosan program, division 44 – environment and infrastructure
2007-08-27/31-Sustainable cities and villages, DongSheng, China
22007-08-27/31-Sustainable cities and villages, DongSheng, China
Background
GTZ main office building had to be renovated (06/04-06/06)The building provides offices facilities for 650 employees, canteen, meeting rooms and conference facilitiesOpportunity to introduce a high comfort innovative urban ecosan system
GTZ main office building under construction (GTZ) New design of the GTZ main building
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conventional versus ecological sanitation
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Previous conventional system
Greywater
Wastewater 6950 m³/a
Black- water
Yellow- water
Rainwater2350 m³/a
2700 m³/a
300 m³/a
1400 m³/a
400 m³/a
1500 m³/a
Sewage treatment
Service waterDrinking
water
3000 m³/a550 m³/a
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Scheme of flowstream separation, treatment and reuse
service water (groundwater)
agricultural reuse
urine storage tanks
urine
treated, sanitised brownwater
brownwater
nutrient extraction from urine
food
fertilisation
human
brownwater treatment
sanitised urine
nutrients and organics from brownwater
nutrients from urine
waterless urinals
urine diversion toilets
refeeding into the water cycle
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The two phases of the project
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The two Phases of the project
Phase IConstruction of urine separation system within the renovation works (financed by GTZ and supported by the Ministry of Environment of the State Hessen)
implemented and in usePhase IIImplementation of urine and brownwater treatment and reuse within a research project (to be financed by the German Federal Ministry for Education and Research)
to be implemented
User information about urine separation toilets
and waterless urinals
ecosan Toilet carbine at the GTZ head quarters
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Technical components of the urine and brownwater reuse system
waterless urinal
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Precipitation treatment unit
urine pipesurine separation toilet docking station for tank trucksstorage tanks
Technical components for collection and storage implemented at the GTZ building (top)
Technical components for the treatment and reuse of urine and brownwater (right)
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membrane unit
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Technical components of the urine and brownwater reuse system
Roediger “No – Mix – Toilet”
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Research and capacity development
Ideal location for a demonstration projectSpecial demonstration room and guided toursGood complementarity with the ecosan project in the KfW building in Frankfurt
design model of the KfW building complexvisit of a delegation from China
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ecosan demonstration project
Model solution for:modern office buildingsnew urban settlements / extension areassituations where the extension of conventional sanitation infrastructure cannot keep pace with fast urbanisation
Visions for ecosan in urban areas
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Thank you very much for your attention!
For more information, please visit our website:www.gtz.de/ecosan
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