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Exergy analysis and nutrient flows of various sewerage systems
Luleå tekniska universitet.
1997 (English)In: Water Science and Technology, ISSN 0273-1223, E-ISSN 1996-9732, Vol. 35, no 9, p. 135-144Article in journal (Refereed) Published
Abstract [en]

There is an increasing demand for more sustainable sewerage systems. An important tool in the analysis of the sustainability of a sewerage system is energy analysis. It is possible, by using an exergy analysis, to estimate the consumption of physical resources. In the present study, the demand on resources in the sewerage system of Bergsjon, a district of Goteborg, Sweden, was evaluated through exergy analysis. The case study included the existing system and two sewerage system alternatives. One important aspect of a sustainable sanitary system is nutrients recycling from sewage to agriculture. The exergy analysis has therefore been complemented with an analysis of the mass-flows of phosphorus and nitrogen. The study shows that the hypothetical calculated exergy consumption during operation will be lower in a system with local treatment and urine separation toilets compared with a conventional alternative. The amount of phosphorus that could be recycled is the same for the studied alternatives, but the amount of nitrogen that could be recycled is considerably higher for systems with urine separation techniques

Place, publisher, year, edition, pages
1997. Vol. 35, no 9, p. 135-144
National Category
Water Engineering
Research subject
Urban Water Engineering
Identifiers
URN: urn:nbn:se:ltu:diva-11308Local ID: a404a8f0-0a16-11dd-ae49-000ea68e967bOAI: oai:DiVA.org:ltu-11308DiVA, id: diva2:984258
Note
Godkänd; 1997; 20080414 (cira)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2017-11-21Bibliographically approved

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