Umeå Municipality has a total of 19 wastewater treatment plants. The largest handles waste water from households and various companies in the area. Every year, it receives about 13 million cubic metres of waste water, containing 3,000 tonnes of organic material and 80 tonnes of phosphorus. And every day it produces 23,000 kWh of biogas. Umeå’s largest treatment plant manages the waste water of 166,000 inhabitants (including industrial load) and can purify up to 8,100 cubic metres of waste water an hour.

At Campus Lindholmen, low-speed electric vehicles combine with specially designed trucks to collect sorted waste and distribute goods to a variety of recipients. The result is an 80–90 percent reduction in heavy-vehicle traffic. Campus Lindholmen in Gothenburg covers an area of less than 10 hectares (one-tenth of a square kilometre) but is a vital hub for developing sustainable waste collection and goods distribution and reducing heavy-vehicle traffic.

To stop eutrophication of the sea, Gryaab treats the Gothenburg region waste water. The residue, sewage sludge, is turned into soil, fertilizer and a climate-friendly vehicle fuel. Each year, approximately 55,000 tonnes of sludge are produced at Gryaab. The treated sludge contains nutrients and mulch – what is needed for crops to grow. Some of the decayed sludge is composted and used as construction soil. About half of the sludge is hygienised and used as fertiliser, replacing artificial fertiliser.

In Örnsköldsvik we prioritize sustainable travels and the goal is highlight and use sustainable travel habits in Örnsköldsvik, for example to choose active transportation such as walking and cycling. It may also be to commute by carpooling, or go by public transport such as train or bus. Or best of all not to travel at all. Instead we use Webb- or telephone meetings when it is possible. The municipality's new Bicycle Plan and parking strategy shows the long-term jobs performed in sustainable travel.

Background: Algae are responsible for converting carbon dioxide into oxygen. However more than 20% of the world\\\'s oceans lack algae growth. The essential nutrient that is lacking in the algae-deficient surface waters is iron. However this iron must be (i) on the surface so that the algae can convert carbon dioxide to oxygen via photosynthesis and (ii) biologically available so that algae can use it. Technology Description: This technology describes the composition of and the method of production for water-buoyant particles that contain bioavailable iron.