Decentralized greywater treatment in urban areas Klosterenga, OSLO
Klosterenga
Compiled by: Petter D. Jenssen, Norwegian University of Life Sciences (UMB)
Greywater
treatment in urban
areas Klosterenga
oversikt
Klosterenga, OSLO
Pretreatment
Biofilter (PBF)
• 33 apartments
• 100 persons
• Area 1m2/person
Horisontal
subsurface
flow CW
Department of Plant and Environmental Sciences P.D. Jenssen
NORWEGIAN UNIVERSITY OF LIFE SCIENCES
Greywater treatment in urban areas Klosterenga, OSLO
Principle system design
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The greywater treatment system consists of a septic tank followed by a pump chamber, pretreatment
biofilter (domes with spray nozzles overlaying the light weight aggregate biofilter), wetland filter (filterbed)
and an outlet container. See also ........
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NORWEGIAN UNIVERSITY OF LIFE SCIENCES
Department of Plant and Environmental Sciences, P.D. Jenssen
Klosterenga Pretreatment biofilter
under construction
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www.umb.no
NORWEGIAN UNIVERSITY OF LIFE SCIENCES
Department of Plant and Environmental Sciences, P.D. Jenssen
Klosterenga Wetland filter under construction
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Department of Plant and Environmental Sciences, P.D. Jenssen
NORWEGIAN UNIVERSITY OF LIFE SCIENCES
Greywater treatment at
Klosterenga Oslo
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Effluent values:
Fecal coliforms:
<10
Total-N:
2,5 mg/l
Total-P:
0,02 mg/l
Department of Plant and Environmental Sciences P.D. Jenssen
NORWEGIAN UNIVERSITY OF LIFE SCIENCES
Local discharge
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Department of Plant and Environmental Sciences P.D. Jenssen
NORWEGIAN UNIVERSITY OF LIFE SCIENCES
Irrigation
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Department of Plant and Environmental Sciences P.D. Jenssen
NORWEGIAN UNIVERSITY OF LIFE SCIENCES
Groundwater recharge
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www.umb.no
Department of Plant and Environmental Sciences P.D. Jenssen
NORWEGIAN UNIVERSITY OF LIFE SCIENCES
Greywater treatment at
Klosterenga Oslo
10
www.umb.no
Effluent values:
Fecal coliforms:
<10
Total-N:
2,5 mg/l
Total-P:
0,02 mg/l
Department of Plant and Environmental Sciences P.D. Jenssen
NORWEGIAN UNIVERSITY OF LIFE SCIENCES
Greywater treatment in urban areas Klosterenga, OSLO
References/links
Jenssen, P.D. 2001. ”Design and performance of ecological sanitation systems in Norway”, Paper at The First
International Conference on Ecological Sanitation, Nanning, China.
Jenssen, P.D. & Vråle. 2004. Greywater treatment in combined biofilter/constructed wetlands in cold climate. In:
Werner, C. et al. (eds.). Ecosan – closing the loop. Proceedings of the 2nd Int. Symposium on Ecological Sanitation,
Lübeck, 7th-11th April, 2003. GTZ, Germany, 875-881.
Jenssen. P.D. 2005. Decentralized urban greywater treatment at Klosterenga Oslo. In: H. v. Bohemen (ed.)
Ecological engineering-Bridging between ecology and civil engineering, Æneas Technical Publishers, The
Netherlands, pp 84-86.
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http://www.youtube.com/
Film about the function of a constructed wetland according to Norwegian design (cold climate). The film is made by
Maxit the manufacturer of Filtralite an expanded clay product with high porosity and a large surface area. These
qualities make the Filtralite very well suited as filter media for treating water.
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