English: This is a vertical greywater filter used as a kitchen garden. Greywater is added on top and trickles down. The plants use the water and nutrients.
This picture is from the ROSA project in Arba Minch Ethiopia. Arba minch is a small town in the south of Ethiopia with
- ca. 79'000 inhabitants
- water supply fed by Arba Minch springs
- distribution network: 25 public taps and
3000 private connections
- no facilities for wastewater collection and treatment.
- 85% use pit latrines
The ROSA project promotes resource oriented sanitation concepts as a route to sustainable and
ecologically sound sanitation in order to meet target 10 of the MDG. Different resource oriented
sanitation systems have been built in Arba Minch town that include 15 urine-diversion dry
toilets(UDDT), 23 Fossa alternas, 10 Arborloos, 8 greywater towers, 1 biogas unit and more than 4 cocomposting
schemes and researches have been made to evaluate these units. The first two or three units
were built for demonstration purposes. These units were considered as first testing units and the
construction cost was covered fully form ROSA project budget. The remaining units were built with cost
sharing as a strategic subsidy, (MoH, 2006), whereby about 75% of the total construction cost was
covered by the households and the remaining 25% was covered from ROSA project budget. For more information please read <a href="http://rosa.boku.ac.at/images/stories/Public" rel="nofollow">rosa.boku.ac.at/images/stories/Public</a> Docs/34th_wedc_2009_ayele_shewa_et_al_2.pdf
The Sustainable Sanitation Alliance (SuSanA) is a network formed by organisations active in the field of sustainable sanitation.
The secretariat is currently located at Deutsche Gesellschaft für Internationale Zusammenarbeit (GIZ, German Agency for International Cooperation) in Eschborn, Germany.
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Ethiopia - Arba Minch UDDTs, Fossa Alternas and Arborloos (ROSA project)
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