Local recycling of plant nutrients from small-scale wastewater systems to farmland—A Swedish scenario study

P. Tidåker, C. Sjöberg and H. Jönsson

Resources, Conservation & Recycling, 2007, vol. 49, issue 4, 388-405

Abstract: Reducing the negative impact from on-site systems and promoting recycling are important tasks for municipal authorities, especially as regards phosphorus. The objective of this scenario study was to compare energy turnover in a life cycle perspective, recycling potential and expected reduction of nitrogen and phosphorus emissions for three upgraded small-scale wastewater systems based on local recycling of plant nutrients. The systems studied were urine separation, blackwater separation and chemical precipitation in the septic tank. The urine was sanitised through storage, the blackwater through liquid composting and the precipitated sludge through chemical treatment with urea before reuse in agriculture. The system boundaries included the operational phase as well as investment in capital goods required for upgrading the existing on-site systems.

Keywords: Blackwater; Environmental systems analysis; Human urine; On-site systems; Sewage sludge; Wastewater treatment (search for similar items in EconPapers)
Date: 2007
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Citations: View citations in EconPapers (1)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:recore:v:49:y:2007:i:4:p:388-405

DOI: 10.1016/j.resconrec.2006.05.004

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