Artiklar och reportage

Alger kan ge renare dricksvatten

SVT reportage med verksamhetsutvecklare Amanda Haux och professor Kenneth M Persson LTH om RecoLabs testbäddsförsök med alger.

Klicka här för att se inslaget

SVT reportage med Amanda Widén, Utvecklingsingenjör NSVA som arbetar med gråvatten på RecoLab

Amanda Widén, utvecklingsingenjör NSVA, visar hur gråvatten, svartvatten och matavfall hanteras och blir miljövinster i RecoLab.

The untapped potential of greywater: Decentralised treatment and use for blue-green public spaces

Mashreki Sami, PhD Student
Department of Civil, Environmental and Natural Resources Engineering
Luleå University of Technology
+46  920  491 829

In this project we investigate methods for greywater treatment and develop an overall concept for their large-scale application. The work is funded by The Swedish Research Council (Formas) and the water utility NSVA.

Greywater is a household wastewater originating from the use of showers, kitchens and laundry and has great potential to be used for attractive blue-green design of urban spaces. This project aims at providing treated greywater as a continuously available water source for urban blue-green spaces, via the investigation of three innovative and aesthetic treatment technologies, their design and implementation into the public realm and development of an overall concept for their large-scale application. We will evaluate a pilot-scale green wall design using greywater, a full-scale urban greywater treatment wetland focusing on long-term performance and membrane filtration as a low-footprint treatment option for providing high-quality water. The treatment efficiency will be assessed regarding BOD, nutrients, pathogens, selected micro-pollutants and micro-plastics. Further, we will study how blue-green greywater infrastructure can be designed and integrated successfully into the public realm, how barriers to implementation and management can be overcome as well as stakeholders’ perceptions of such systems. Furthermore, we will investigate whether local greywater treatment is practically feasable and what savings to the sewer system this can result in. Finally, a concept for large-scale application of decentralised greywater treatment will be developed.

The project is an interdisciplinary collaboration of Luleå University of Technology (Urban Water Engineering and Architecture), Monash University (Australia), the Norwegian University of Life Sciences and the Swedish water utility NSVA.

Mashreki Sami, PhD Student
Department of Civil, Environmental and Natural Resources Engineering
Luleå University of Technology (
+46  920  491 829

Model for cities of the future

A pilot of the NPHarvest technology developed in Aalto University will be launched next spring in the new Oceanhamnen district of Helsingborg, Sweden. This unique new district will recycle nutrients, energy and water from wastewater.

A test bed in Helsingborg will be used to pilot new technologies for the local recycling of nutrients, energy and water, with three office buildings and 350 apartments covered in the initial phase. NPHarvest will be among the first pilot projects to launch. Piloting will also provide more information on the life-cycle costs of the NPHarvest process and the quality of its end products.

Helsingborg concept a model for cities of the future

The Helsingborg concept is based on three pressurised collection pipes and has been developed by Helsingborg’s water utility, Nordvästra Skånes Vatten och Avlopp AB (NSVA). One pipe collects toilet waters, another collects kitchen biowaste and a third collects bathing and washing water. The first two contain nutrients and can thus be used in the NPHarvest process.

In the NPHarvest process, developed by researchers from Aalto University, phosphorus is collected through coagulation while a membrane is used to separate nitrogen, resulting in end products that can be used as fertiliser. NPHarvest can be applied to various circumstances and adapted on a case-by-case basis. So far, the process has been tested with separately collected urine, reject waters from a municipal sewage digestion process and a biogas plant, leachate from a landfill and percolation liquid from an agricultural dry digestion system. In Sweden, the process will be tested under a new set of conditions.

’It is great to get to study how NPHarvest works in a separator system like this! We will also get to see how our technology measures up to the competition, which is very interesting,’ says doctoral candidate Juho Uzkurt Kaljunen.

Potential of technology verified by Teollisuuden Vesi

The NPHarvest process has been piloted for roughly one and a half years in locations around Finland. Information gathered on the functioning of the process was used by Teollisuuden Vesi, Aalto University’s partner in the project, to assess the economic potential of the technology. According to the assessment, NPHarvest will be competitive especially once the gas-permeable membranes used in the process are available at a lower price. The manufacturing costs of the membranes are expected to fall as their use grows and production output increases.

’Cost efficiency has been a lodestar for the development of the process along with reliability and adaptability. Economics tend to have a major impact on decisions,’ notes Professor of Practice Anna Mikola.

The project was funded until the end of November by the Ministry for the Environment and it was carried out in collaboration between Aalto University and several companies in the field: Teollisuuden Vesi, Helsinki Region Environmental Services Authority HSY, Gasum, Biolan, Nordkalk, Kemira and Outotec. The new project in Sweden is funded by Maa- ja vesitekniikan tuki, Svenskt Vatten and the J. Gustaf Richert Foundation and carried out with partners NSVA and Lund University.

For more information on the project:

Professor of Practice Anna Mikola, DSc (Tech.)
+358 40 7176 552

Introduktion till RecoLab 1 (5)

I första reportaget av RecoLab får vi en tur på Öresundsverket, Helsingborgs avloppsreningsverk. Ingen vill bo granne med ett avloppsverk som luktar – vart har lukten tagit vägen?



RecoLab – episode 1

In the first report by RecoLab, we get a tour of the Öresund plant, Helsingborg’s sewage treatment plant. Nobody wants to live next door to a sewage plant that smells – where has the smell gone?

Introduktion till RecoLab 2 (5)

Följ med de tre rören in till RecoLab. Vad gör vi med innehållet i rören och stämmer det att vi använder dresserade husdjur för att hantera reningen?


RecoLab – episode 2

Follow the three tubes into RecoLab. What do we do with the contents of the pipes and is it true that we use trained pets to handle the treatment?

Introduktion till RecoLab 3 (5)

I Helsingborg är det faktiskt lätt att göra rätt. Tack vara en stadsplanering med genomtänkt infrastruktur kan en spolning på toaletten vara en ren miljövinst! Louise & Peter fortsätter sina besök i Oceanhamnen och träffar fler miljöhjältar. Peter Danielsson, kommunstyrelsens ordförande, berättar om Helsingborgs miljömål och vision för fortsatt utvecklingen för en hållbar stadsplanering.

RecoLab – episode 3

In Helsingborg, it is actually easy to do the right thing. Thanks to urban planning with well-thought-out infrastructure, flushing the toilet can be a pure environmental benefit! Louise & Peter continue their visits to Oceanhamnen and meet more environmental heroes. Peter Danielsson, chairman of the municipal board, talks about Helsingborg’s environmental goals and vision for continued development for sustainable urban planning.

Introduktion till RecoLab 4 (5)

Samarbete är vägen till framgång! Med en gemensam mötesplats och testbädd skapar NSR, Öresundskraft, NSVA och Helsingborgs stad en unik samverkan som stavas RecoLab. Tillsammans har de skapat en stadsutveckling som utmanar konventionella infrastrukturer och skapar nya möjligheter för cirkulära och hållbara kretslopp. Möt RecoLabs styrgrupp och hör om RecoLabs ”varför” och ”hur” – det är nu resan börjar!

Louise och Peter fortsätter att knackar på i Oceanhamnen och vi får höra om magin i diskbänken och hur det är att vara nybyggare!


Episode 4

Cooperation is the way to success! With a common meeting place and test bed, NSR, Öresundskraft, NSVA and the City of Helsingborg create a unique collaboration spelled RecoLab. Together, they have created an urban development that challenges conventional infrastructures and creates new opportunities for circular and sustainable cycles. Meet RecoLab’s steering group and hear about RecoLab’s ”why” and ”how” – this is where the journey begins!

Louise and Peter continue to knock on the door in Oceanhamnen and we hear about the magic in the sink and what it’s like to be a settler!

Introduktion till RecoLab 5 (5)

Sist men inte minst- i avsnitt 5 om RecoLab pratar vi testbädd. I testbädden testas och utvecklas framtidens teknik. Möt vår första testbäddsgäst, hur kommer det sig att man åker från Finland för att få en plats i RecoLab? Hör om Juho´s arbete och studier, vad gör han i RecoLab och vad vill han uppnå med sina tester. Louise får även en ny insikt, när i processen upphör avloppsvatten vara farligt och äckligt?

Vi får även höra och se fler erfarenheter och upplevelser från nybyggare i Oceanhamnen!


Episode 5

Last but not least – in section 5 about RecoLab we talk test bed. In the test bed, the technology of the future is tested and developed. Meet our first test bed guest, how come you travel from Finland to get a place in RecoLab? Hear about Juho´’s work and studies, what he does in RecoLab and what he wants to achieve with his tests. Louise also gets a new insight, when in the process does wastewater cease to be dangerous and disgusting?

We also get to hear and see more experiences and experiences from settlers in Oceanhamnen!

Publicerad 7 augusti 2022.
Senast uppdaterad 11 augusti 2022.


You can use Google Translate to translate the contents of To do that, select the language you would like to translate into in the list below.

Please bear in mind, since the Google Translate is an automatically generated translation, we do not take any responsibility for errors in the text.

Stäng formuläret