Decentralized greywater treatment in urban areas - Klosterenga, OSLO

Klosterenga

Compiled by: Petter D. Jenssen, Norwegian University of Life Sciences (UMB)

Klosterenga oversikt

PretreatmentBiofilter (PBF)

Horisontalsubsurfaceflow CW• 33 apartments

• 100 persons• Area 1m2/person

Greywater treatment in urban areas - Klosterenga, OSLO

NORWEGIAN UNIVERSITY OF LIFE SCIENCES

www.umb.no

Department of Plant and Environmental Sciences P.D.

Jenssen

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Greywater treatment in urban areas - Klosterenga, OSLOPrinciple system design

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

www.umb.no

Klosterenga - Pretreatment biofilter under construction

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Department of Plant and Environmental Sciences,

P.D. Jenssen

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NORWEGIAN UNIVERSITY OF LIFE SCIENCES

www.umb.no

Klosterenga - Wetland filter under construction

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Department of Plant and Environmental Sciences,

P.D. Jenssen

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NORWEGIAN UNIVERSITY OF LIFE SCIENCES

www.umb.no

Greywater treatment at Klosterenga OsloEffluent values:Fecal coliforms: <10Total-N: 2,5 mg/lTotal-P: 0,02 mg/l

Department of Plant and Environmental Sciences,

P.D. Jenssen

NORWEGIAN UNIVERSITY OF LIFE SCIENCES

www.umb.no

Department of Plant and Environmental Sciences P.D.

Jenssen

7 Local discharge

NORWEGIAN UNIVERSITY OF LIFE SCIENCES

www.umb.no

Department of Plant and Environmental Sciences P.D.

Jenssen

8 Irrigation

NORWEGIAN UNIVERSITY OF LIFE SCIENCES

www.umb.no

Department of Plant and Environmental Sciences P.D.

Jenssen

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Groundwater recharge

NORWEGIAN UNIVERSITY OF LIFE SCIENCES

www.umb.no

Department of Plant and Environmental Sciences P.D.

Jenssen

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Inhouse use ?

Greywater treatment at Klosterenga OsloEffluent values:Fecal coliforms: <10Total-N: 2,5 mg/lTotal-P: 0,02 mg/l

NORWEGIAN UNIVERSITY OF LIFE SCIENCES

www.umb.no

Department of Plant and Environmental Sciences P.D.

Jenssen

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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.

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.