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Alternatives to Conventional Wastewater Systems. EKBO – Ecological Tenant-Owners’ Society in Orhem. Stockholm, Sweden Convalescent home retrofitted to tenant-owners’ society Ecological housing. Toilet System at EKBO – Gebers. Collection of Urine and Feces – The Toilet.

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ekbo ecological tenant owners society in orhem
EKBO – Ecological Tenant-Owners’ Society in Orhem
  • Stockholm, Sweden
  • Convalescent home retrofitted to tenant-owners’ society
  • Ecological housing
collection of urine and feces the toilet
Collection of Urine and Feces – The Toilet
  • Single-flush urine-diverting toilet
    • Manufacturer: Wost Man Ecology
    • Porcelain toilet
    • 0.1 L/flush for rinsing urine bowl
    • Dry collection of feces
    • Price per toilet: appr. 300 USD
    • Price for urine collection system: appr 500 USD
    • Price for feces collection system: appr. 3000 USD
urine collection
Urine Collection
  • Piping:
    • Ø50
    • Polypropylene
urine collection1
Urine Collection
  • Piping:
    • Ø50
    • Polypropylene
  • Storage
    • Polypropylene
    • 3 x 4m3

Picture of urine tank

urine collection2
Urine Collection
  • Piping:
    • Ø50
    • Polypropylene
  • Storage
    • Material, PP?
    • 3 x 4-6 m3 ??
  • Emptying
    • Frequency: 2-3 yearly
    • Cost: appr. 1000 USD/year Ragnsells Agro!!!!!
feces collection
Feces Collection
  • Piping
    • Ø200 ”Spiro”
  • Storage
    • Common plastic bins
feces collection1
Feces Collection
  • Piping
    • Ø200 ”Spiro”
  • Storage
    • Common plastic bins
  • Emptying
    • Feces compost
    • Apartment owner’s responsibility

Picture of new compost

feces treatment
Feces Treatment
  • Feces compost
    • Two dedicated ”composting specialists” for O&M
    • Has never been emptied
    • Soil-like appearance after composting
    • Will be used as soil conditioner on a farm 10 km away

Picture of the compost

grey water treatment
Grey Water Treatment
  • No local grey water treatment at present
  • The grey water is conveyed to the municipal wastewater treatment plant for the area.
reuse of resources urine
Reuse of Resources: Urine
  • Storage for 6 months
  • 3 x 150 m3
  • Used as fertilizer at Lake Bornsjön
  • Barley cultivated for 5-6 years
  • Appr 2 hectares can be fertilized from Gebers
reuse of resources feces
Reuse of Resources: Feces
  • Feces compost not yet emptied.
  • Agreement with farmer 10 km away for use as soil conditioner.
  • First transport and reuse during 2003 or 2004.
lessons learned from the ekbo project
Lessons Learned from the EKBO Project
  • The overall performance is satisfactory for the users of the sanitation system.
  • Occasional problems arising have been solved by good routines
  • Need of development of sanitation system
  • The handling of the feces fraction can be made cheaper and simplified in newly constructed houses
  • Information program for users
more information
More Information
  • www.ekbo.se (in Swedish)
  • www.lt.slu.se (in Swedish)
  • www.iees.ch/cs/cs_4.html (in English)
  • Contact person: Nicholas Hort; [email protected]
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