Ännu en doktorsavhandling baserad på studier av vår teknik har presenterats på KTH.


Daniel Woldemarian har genomfört tester på utrustning levererad av Scarab och dess dotterbolag i samarbete med flera olika industriföretag. I sammanfattningen till hans doktorsavhandling kan man läsa:

"Membrandestillation (MD) är en ny termiskt driven teknik som kan uppnå extremt hög miljöprestanda genom att den är effektiv och i hög grad kan drivas av förnybara energikällor. Fjärrvärmesystem, särskilt de som drivs av biomassa, utgör en idealisk värmeförsörjning för ett MD-system. Avhandlingen presenterar en teknoekonomisk bedömning av fjärrvärmedriven MD för vattenrening i utvalda industriella applikationer. Studien analyserar MD-systemets separationsprestanda och kostnader i olika fjärrvärmeintegrationsscenarier. Analyserna baseras på tre typer av semi-kommersiella MD-moduler, med experiment utförda på laboratorie- och pilotskala. Fallstudierna innefattar: borttagning av läkemedelsrester från avloppsvatten i ett kommunalt avloppsreningsverk; avloppsvattenrening i läkemedelsindustrin; uppkoncentrering i av alkohol i en bioetanolproduktionsanläggning."

För mer information...



Ershad Ullah Khan presents and defends his doctoral thesis on Renewables based polygeneration for rural development in Bangladesh at the Royal Institute of Technology on May 22 2017.

More information.



Two reports.

Final report from IVL - Swedish Environmental Research Institute, Stockholm, Sweden,  on removal of pharmaceutical residues from municipal waste waters.  


Final report on waste water treatment with polygeneration from KTH – Royal Institute of Technology, Stockholm, Sweden


2015- 10-16

Absolute Pure Water - article in KTH magazine (in Swedish).

Read it ...




Economists See Water Crises As Greater Risk Than Weapons, War, Disease
By Sara Jerome, May 26, 2015 Water Online


Economic experts say water crises would have the most harmful impact on global stability compared to any other type of threat, including wars, infectious diseases, and weapons of mass destruction.


That's according to the World Economic Forum's (WEF) Global Risk Assessment for 2015. "In looking at global risks in terms of their potential impact, the nearly 900 experts that took part in the Global Risk Perception Survey rated water crises as the greatest risk facing the world," the forum announced.


These risks are not news to the business sector. "Recent events have concentrated investors' attention on the problems that water scarcity could pose to companies and portfolios. From California to Asia and South America, many regions of the world are suffering serious droughts," Institutional Investor recently reported.


According to Piet Klop, a senior adviser at Dutch pension fund manager PGGM, water risk "has definitely moved from what used to be an NGO concern to something that is now about ready for prime time and mainstream investor interest."…



The hazard of nanoparticles has been noted lately. In the water treatment industry there are no known methods to efficiently purify water from nanoparticles. We have therefore commissioned KTH make an initial test on the removal of silver nanoparticles. It has been successful. We now continue the tests with other types of nanoparticles.

Nanoparticles can penetrate through the skin into the blood and bring other toxic molecules along. Health and environmental effects are largely unknown.
The human cell is approximately 5 micrometer in section - thus 5 000 nanometers. A nanoparticle therefore penetrates easily through the cell membrane and could possibly cause harm.


See latest test results



Video clippings from Scarab information brief in February 2014 (in Swedish Swedish)




Infant toenails are a reliable way to estimate arsenic exposure before birth, a Dartmouth College study shows.

The findings appear in the Journal of Exposure Science & Environmental Epidemiology.




Invitation to sustainability seminar the 2nd of June at the Royal Institute of Technology in Stockholm about the use of renewable fuels for polygeneration of pure drinking water, hot water for sanitation and electricity. (All three consumables from the same input of fuel.)  Read more here.



Integrating water treatment with power production is a new avenue to affordable high-class drinking water.

Read whole report...



News about HVRs work to mitigate the arsenic catastrophe in Bangladesh

HVR, KTH och Grameen (in Swedish)



Report from Scarab's information meeting in Feb 2014.

See links (all in Swedish):

Rapport från informationsmöte (pdf)

Powerpoint presentation från mötet (pdf) och som PP-fil



Information meetings

Information on this year's progress for Scarabs water treatment technology.


Xzero AB (publ)
To manufacture purer water than anyone else - tests with leading semiconductor manufacturers.


HVR Water Purification AB (publ)
International project to create products for absolutely clean and healthy drinking water.



Scarab supports UNICEF

Scarab’s subsidiary HVR Water Purification AB has donated equipment and know-how to a successful UNICEF fund raising campaign. The equipment turns sweat into drinking water in one step. Challenges to drink the produced water brought in a substantial amount of money from sponsors.

Read more ...    



The Swedish Sustainability Foundation in co-operation with the Department of Energy Technology at the KTH Royal Institute of Technology In Stockholm, Sweden, invites to Good Life seminar about remedies for arsenic contamination of well water in Bangladesh on October 1, 2013.




Video from Xzero AB illustrates that our technology removes absolutely everything totally.

For drinking water applications, this means absolute protection for the customer.

For industrial applications this means efficiency and a possibility of reuse of water.



When we realize that the survival of future generations is at stake,
all other investments will lose in significance. (Aapo Sääsk)