Kretsloppsteknik – Page 64 – Blog from the Environmental Engineering Research Group at SLU

Improving wastewater treatment plants for increased nutrient recovery

Published 31 October, 2017
By Prithvi Simha

Dr. David Gustavsson, Research Leader at Sweden Water Research loves centralized wastewater treatment plants! He starts his presentation saying…“I really love these plants”. At a symposium filled with people discussing the possibility of taking sanitation off the grid, that’s quite a statement to make. Jokingly, he further comments, “....should I leave now?”. How good are centralized WWTPs in removing unwanted substances? In nutrient removal and recovery? Is there a case to be made for the co-existence or indeed, the integration of urine diversion with the operation of such plants? How will WWTP operations be affected with increased urine diversion at source?

Click here to access Dr. Gustavsson’s presentation to find out more and let us know what you think!

The Future of Sanitation – a return to circular systems

Published 31 October, 2017
By Prithvi Simha

Is urine diversion a new concept? In his presentation at SLU, Jan-Olof Drangert, Assoc. Prof. at Linköping University traces the evolution of sanitation and nutrient recycling in Sweden over the years. He suggests that, water-based sanitation used in the 20th century may have been just a brief detour in human history as we’ve strongly relied on dry sanitation systems in the past. Will our societies return to favor circular systems? Click to see what Dr. Drangert has to say about this.

Urine Diversion in Durban – Has it exceeded the original vision?

Published 30 October, 2017
By Prithvi Simha

The eThekwini Municipality in the greater Durban region with its 80,000 urine diverting toilets is often highlighted as a success story for dry sanitation. In a recent presentation at SLU, Professor Chris Buckley, Head of the Pollution Research Group at the University of KwaZulu-Natal, South Africa reflected on the eThekwini case study.

Curious to know whether or not Professor Buckley believes urine diversion in Durban has exceeded the original vision? Click here to access the presentation

How to get the best value out of organic waste?

Published 28 September, 2017
By Prithvi Simha

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 fås högsta värdet ur biologiskt nedbrytbart avfall?

Published 28 September, 2017
By Prithvi Simha

Kommuner förväntas tillgodose sina invånare med avfallshantering, vilket finansieras med skatteintäkter och/eller avfallshanteringsavgifter. I många låg-, och medel-inkomstländer kämpar kommunerna med att tillgodose en acceptable servicenivå och på dessa ställe sköter den informella sektorn ofta stora delar av insamlingen och behandlingen av avfallet. Till skillnad från plast-, och metallfraktionerna, sköter inte den informella sektorn om det biologiska nedbrytbara fraktionen; främst för värdet är så lågt att behandlingen skulle kosta betydligt mer än de möjliga inkomsterna. Om den biologiskt nedbrytbara fraktionen kunde omvandlas till produkter av högt värde skulle behandlingen kunna bära sin egen kostnad vilket skulle kunna uppmuntra insamlingen och behandlingen av denna fraktion.
I den här studien utvärderade och jämförde vi det potentiella värdet 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 är intresserade av vilken strategi som producerar högst värde, läs artikeln vidare här.

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

Published 27 September, 2017
By Prithvi Simha

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

Published 26 September, 2017
By Prithvi Simha

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

Abstract

Licentiate Seminar: Jenna Senecal

Published 26 September, 2017
By Prithvi Simha

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

Published 26 September, 2017
By Prithvi Simha

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. Håkan 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.

Framtidens sanitetslösningar

Published 28 August, 2017
By Evgheni Ermolaev

Avtackningsseminarium till Håkan Jönsson!
Framtidens sanitetslösningar
25 Oktober 2017 kl 1300
Lokal: Hörsal V Ulls hus SLU
Seminariet kommer även att vara möjligt att följa på webben.

För att hedra Håkan Jönsson som går i pension under 2017 kommer vi att hålla ett öppet symposium för Håkan den 25 oktober mellan kl 1300 och 1730.
Titeln för symposiet är: Framtidens sanitetslösningar.
Vi kommer att ha presentationer från både svenska och internationella experter inom området (exakt schema med presentatörer kommer inom kort).

Sprid gärna inbjudan vidare till personer ni tror vill delta (ursäkta om ni får inbjudan flera gånger).