Sahar Dalahmeh

I am a researcher interested in wastewater treatment and reuse in agriculture as well as treatment of wastewater using filters of organic materials (biochar).


My current research projects tackle the following 

- Minimization of wastewater pollutants including nitrogen, phsophorus and micro-organicns in samll scale wastewater systems using biochar filters, 

- Upstream activities to minimize micro-pollutants in wastewater

- Assessing uptake of micro-pollutants in plants and accumulation in soil in wastewater irrigated agriculture in low and middle income countries,



2012-2016 Small wastewater system, nutrient recycling and sludge management (TN0320; 5hp)

2010-2016 Safe nutrient recycling (BI0876; 10 hp). 

2011-2012 ”Waste management (TN0319; 5 hp)”,


- The occurrence and fate of pharmaceutical residues from their sources to water bodies and food chain in Jordan valley. PEER/ USAID

- 2016-2018 Total effects of wastewwater systems on sludge quality and nutrient recycling and metals separation / VA Kluster- Swedish water (Svenskt vatten).

- 2016-2018 Methods and knowledge for upstream activities for minimization of emergen pollutants in wastewater VA Kluster- Swedish water (Svenskt vatten).

- 2016 Biochar for onsite wastewater treatment: long term treatment capacity and enhanced removal of nitrogen and phsophor, Havs och vatten myndighet.

- 2015-2016, Removal of pharmaceuticals and peri-flourinated alkyl substances from onsite wastewater systems using biochar, Stiftelsen Olle Engkvist Byggmästare.

- 2015 Biokol i små avloppsanlägningar, Havs och vatten myndighet.

- 2013-2016, Pharmaceutical Pollution at Use of Wastewater in Crop Production: Consequences and Mitigation Measures for Soil Ecosystem and Agricultural Productivity in Developing Countries, Formas.

- 2015-2018 Morgondagens Kommunala Vattenrening- Steg 3, Vinnova.

- 2014-2015  Läkemedel och organiska miljöföroreningar i kretsloppet, Havs och vatten myndighet.

- 2013-2014 Morgondagens Kommunala Vattenrening, Vinnova

- 2008- 2014 On-site treatment of greywater - production of a water resource, FORMAS, SIDA and IDB.

- 2006-2008  Validation of WHO Guidelines for the Safe Use of Wastewater, Excreta and Greywater: Safe Use of Greywater in Jerash Refugee Camp, IDRC-WHO- FAO”, Jordan.


PhD students

o  Susanna Karlsson (2015).


Master students

o  Ylva Stenström. Biochar for phosphorus and nitrogen removal from wastewater (2016).

o  Johanna krona. Adsorption of pharmaceutical residues from wastewater using bark and active coal filters (2016).

o  Oskar Skoglund. Evaluation of bark material and granulated active carbon in treating perfluoroalkyl substances (PFASs) using waste water (2016).

o  Emma Björnberg. Pharmaceuticals in the Environment – Concentrations Found in the Water, Soil and Crops in Kampala (2016).  

o  Anna-Klara Elenström. Pharmaceuticals in the Environment – Concentrations Found in the Water, Soil and Crops in Kampala (2016).

o  Sana Tirgan. Occurrence of Perfluorinated Alkylated Substances in Wastewater, Soil and Crops in Nakivubo-Kampala/ Uganda (2016).

o  Malin Mellhorn. Biokol som filtermaterial i anslutning till dränering av åkermarksdiken- Utformning, installation och utvärdering av ett biokolsfilter (2014).

o  Morgan Pacaud. Effects of biochar particle size on pollutant removal from greywater (2014).

o  Susanna Ciuk Karlsson. Modeling of bark-, sand- and activated carbon filters for treatment of greywater (2012).

o  Christina Berger. Biochar and activated carbon filters for greywater treatment – comparison of organic matter and nutrients removal(2011).

o  Orianna Courtney. Eklund Small-scale Systems for Greywater Reuse and Disposal A Case Study in Ouagadougou (2010).

o  Linda Tegel Berg. Small-scale Systems for Greywater Reuse and Disposal A Case Study in Ouagadougou (2010).

Publikationer i urval

1- Dalahmeh, S., Ahrens, L., Gros, M., Wiberg, K., Pell, M. 2017. Potential of biochar filters for onsite sewage treatment: Adsorption and biological degradation of pharmaceuticals in laboratory filters with active, inactive and no biofilm. Sci Total Environ, 612, 192-201.

2-    Cossio, C., McConville, J., Rauch, S., Wilen, B.M., Dalahmeh, S., Mercado, A., Romero, A.M. 2017. Wastewater management in small towns - understanding the failure of small treatment plants in Bolivia. Environ Technol, 1-11.

3- Leven, L. Gross, M., Dalahmeh, S., Ahrens, L., Wiberg, K., Jönsson, H., Eveborn, D. (2016). Pharmaceuticals in blackwater and latrine – treatment and risks. Recycling & Organic Waste.

4-     Dalahmeh, S.S., Lalander, C., Pell, M., Vinneras, B., Jonsson, H. (2016). Quality of greywater treated in biochar filter and risk assessment of gastroenteritis due to household exposure during maintenance and irrigation. J Appl Microbiol.

5-     Karlsson, S.C., Langergraber, G., Pell, M., Dalahmeh, S., Vinneras, B., Jonsson, H. 2015. Simulation and verification of hydraulic properties and organic matter degradation in sand filters for greywater treatment. Water Sci Technol, 71(3), 426-33.

6-     Niwagaba, C. B., Dinno, P., Wamala, I., Dalahmeh, S. S., Lalander, C., & Jönsson, H. 2014. Experiences on the implementation of a pilot grey water treatment and reuse based system at a household in the slum of Kyebando-Kisalosalo, Kampala. Journal of Water Reuse and Desalination. Doi:10.2166/wrd.2014.016.

7-     Dalahmeh, S.S., Jönsson, H., Hylander, L.D., Nan, H., Pell, M. 2014. Dynamics and functions of bacterial communities in bark, charcoal and sand filters treating greyawter. Water Research, 54, 21-32.

8-  Dalahmeh, S.S., Pell, M., Hylander, L.D., Lalander, C., Vinnerås, B., Jönsson, H. 2014. Effects of changing hydraulic and organic loading rates on pollutant reduction in bark, charcoal and sand filters treating greywater. Journal of Environmental Management, 132(0), 338-345.

9-  Lalander, C., Dalahmeh, S., Jönsson, H., Vinnerås, B. 2013. Hygienic quality of artificial greywater subjected to aerobic treatment: a comparison of three filter media at increasing organic loading rates. Environmental Technology, 34(18), 2657-2662.

10-  Dalahmeh, S., Pell, M., Vinnerås, B., Hylander, L., Öborn, I., Jönsson, H. (2012). Efficiency of bark, activated charcoal, foam and sand filters in reducing pollutants from greywater. Water, Air, & Soil Pollution 223(7), 3657-3671.

11-  Dalahmeh, S.S., Hylander, L.D., Vinnerås, B., Pell, M., Öborn, I., Jönsson, H. (2011). Potential of organic filter materials for treating greywater to achieve irrigation quality: A review. Water Science and Technology 63(9), 1832-1840.

12-  Assayed A.K., Dalahmeh S.S., Suleiman W.T. 2010. Onsite Grey Water Treatment Using Septic Tank Followed by Intermittent Sand Filters - A Case Study of Abu Al farther Village in Jordan. International Journal of Chemical and Environmental Engineering, vol 1, 67-71

13-  Dalahmeh S.S., Assayed M., Suleiman W.T. (2009). Themes of stakeholder participation in greywater management in rural communities in Jordan. Desalination, vol 243 (2009), 159-169

14-  Halalsheh, M., Dalahmeh, S., Sayed, M., Suleiman, W., Shareef,  M., Mansour,  M.,   Safi, M. (2008). Grey water characteristics and treatment options for rural areas in Jordan. Bioresource technology, 99, 6635-6641.