Lack of fresh water is a growing problem in many parts of the world. At Hammarby Sjöstadsverk we develop techniques that will make it possible to reuse treated wastewater. This unique facility is owned and operated by a consortium lead by the Royal Institute of Technology (KTH) and IVL Swedish Environmental Research Institute.
Clean Water and Sustainable Energy for Rural Communities
Sustainable energy and drinking water access are two major and intertwined challenges at global level. Lack of water and energy threatens social and economic development particularly in rural areas of developing countries like Bangladesh. Our research promotes a universal approach towards tackling this dual challenge via renewable generation of biogas and solar power, integrated with membrane distillation employed at the village level. Membrane distillation (MD) is a thermally driven water purification technology, which has significant advantages over other processes.
Renewable and innovative raw materials from the sea; production of foods and bioenergy; provision of ecosystem services; restoration of nutrient levels; removing carbon from the atmosphere and nurturing fossil-free and resilient economies. Too good to be true?
The vision of the UN Sustainable Development Goals is that all people have access to safe water, sanitation and nutrition.
A SIANI (Swedish International Agricultural Network Initiative) Expert Group consisting of researchers and practitioners aims to identify the most important linkages and explore how to work in an integrated way. Key aspects explored include Phytoremediation technology (research done by KTH and Stockholm University) and Recovery of plant nutrients and energy from sanitary waste (Stockholm Environment Institute and KTH).
Cleaning Water with Underwater Plants The water industry is grappling with how to purify water in an eco-friendly way and simultaneously retain useful nutrients. Using plants as biofilters is an emerging technology to do this. In a pilot scale project we now use aquatic plants to remove toxic metals from water, bridging knowledge from Sweden and developing countries.
Smarter Water Use for Industries and the Environment Many industries need clean water for their production lines while industrial effluents can still be highly polluted. The traditional linear flows pose complex challenges not only in terms of removal efficiency but also in economy. KTH now works with partners from industry and research institutes to provide solutions building on membrane distillation (MD) and recirculation of industrial water.
About 225 000 000 litres of bottled waters are sold yearly in Sweden. In USA this figure is a staggering 38 billions. More and more of the bottled water that we drink is produced by Reverse Osmosis (RO), with a zero content of minerals. Will that cause health problems?
Researchers at KTH, the Division of Land and Water Resources, study essential minerals and toxic elements in drinking water.
Speeding up Sunlight: Using nanotechnology for natural water purification
Organic water pollutants from industrial activities pose a threat to humans and animals all over the world. Nanotechnology in combination with sunlight can protect against these harmful substances. KTH has cutting-edge expertise in preparing a large variety of nanoparticulate systems with extraordinary physical and chemical properties which are of great environmental, scientific, and technical interest.