How to get the best value out of organic waste?

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Municipalities are expected to provide solid waste management to their inhabitants, funded by tax revenue or/and waste treatment fees. In many low and middle income countries, municipalities however struggle to provide an adequate level of service; in such places the informal sector plays a major role in the collection and treatment of solid waste. In contrast to the plastic and metal fraction, the organic fraction is not managed by the informal sector, primarily because it has low or no financial value and treatment would cost more than the possible revenue. If the organic fraction could be converted to valuable products, the treatment could bear its own cost and this could act as an incentive to collect and treat this fraction.

Hur fÄs högsta vÀrdet ur biologiskt nedbrytbart avfall?

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Kommuner förvÀntas tillgodose sina invÄnare med avfallshantering, vilket finansieras med skatteintÀkter och/eller avfallshanteringsavgifter. I mÄnga lÄg-, och medel-inkomstlÀnder kÀmpar kommunerna med att tillgodose en acceptable servicenivÄ och pÄ dessa stÀlle sköter den informella sektorn ofta stora delar av insamlingen och behandlingen av avfallet. Till skillnad frÄn plast-, och metallfraktionerna, sköter inte den informella sektorn om det biologiska nedbrytbara fraktionen; frÀmst för vÀrdet Àr sÄ lÄgt att behandlingen skulle kosta betydligt mer Àn de möjliga inkomsterna. Om den biologiskt nedbrytbara fraktionen kunde omvandlas till produkter av högt vÀrde skulle behandlingen kunna bÀra sin egen kostnad vilket skulle kunna uppmuntra insamlingen och behandlingen av denna fraktion.
I den hÀr studien utvÀrderade och jÀmförde vi det potentiella vÀrdet av produkter som erhölls i fyra olika behandlingsstrategier: termofil kompostering (den vanligaste förekommande behandlingen av det biologiskt nedbrytbara fraktionen globalt), fluglarvskompostering, rötning och fluglarvskompostering följt av rötning. Om ni Àr intresserade av vilken strategi som producerar högst vÀrde, lÀs artikeln vidare hÀr.

Research shows Biochar is efficient in removing pharmaceutical residues at onsite sewage facilities

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In a very recent study published in Science of the Total Environment, Sahar Dalahmeh, a researcher at the Environmental Engineering Unit, and her co-workers investigated the potential of biochar filters to replace or complement sand filters for the removal of pharmaceutical residues from wastewater in onsite sewage facilities.

Potential of biochar filters for onsite sewage treatment

Licentiate Seminar: Luis Fernando Perez Mercado

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Luis Fernando Perez Mercado, Doctoral Candidate at the Environmental Engineering Unit, Department of Energy and Technology will defend his licentiate thesis entitled, On-farm filtration technology for pathogen reduction: Reuse of low hygienic quality water for vegetable irrigation.

When?: 24 October 2017 at 13:30
Where?: Lecture Room 2034, MVM house, Swedish University of Agricultural Sciences

For further information, get in touch with Luis at the Department of Energy and Technology, P.O. Box 7032, SE-750 07 Uppsala, Sweden. E-mail: fernando.perez@slu.se

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Licentiate Seminar: Jenna Senecal

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Jenna Senecal, Doctoral Candidate at the Environmental Engineering Unit, Department of Energy and Technology will defend her licentiate thesis entitled, Urea stabilisation and dehydration for urine-diverting toilets: System and hygiene evaluation.

When?: 24 October 2017 at 09:00
Where?: Lecture Room S, Ulls hus, Swedish University of Agricultural Sciences, Uppsala

For further information, get in touch with Jenna Senecal at the Department of Energy and Technology, P.O. Box 7032, SE-750 07 Uppsala, Sweden. E-mail: jenna.senecal@slu.se

Abstract

Sanitation Technologies of the Future

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When?: 25 October 2017 at 13:00
Where?: Room: Hörsal V, Ulls hus, Swedish University of Agricultural Sciences, Uppsala

Online Streaming?: Click here

To honor Prof. HĂ„kan Jönsson who retires during 2017, the Kretsloppsteknik research group at the Department of Energy and Technology, Swedish University of Agricultural Sciences is organizing a Farewell symposium on the 25th of October, between 13:00 and 17:30. The Symposium, entitled “Sanitation Technologies of the Future” will host several Swedish and International experts who will present their visions about the future of the sanitation sector. A schedule of the symposium can be seen below.