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  • 1.
    Ask, Paulin
    Linnaeus University, Faculty of Health and Life Sciences, Department of Biology and Environmental Science.
    Regnvatten från hustak som resurs: Användning av takavrinningsvatten som resurs och kvalitetskriterier2017Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
    Abstract [en]

    Flooding from rainwater in megacities around the world is a major problem which is growing even bigger with the scenarios that has been predicted by IPCC. The problem has to be taken care of somehow and one possible solution could be to use the water once it just hit the ground area. This study will show some of the opportunities we have to use runoff water from roofs with local solutions in Gothenburg and analyse quality differences of run off-water with raw water from the river Göta Älv, which today is used as drinking water in Gothenburg. Among some of the existing solutions for rainwater today, for example stone filter and trees, the result will show specifically one solution which is used at Stadsbyggnadskontoret in Gothenburg city center. The results of the run off-water show higher values of metals, nitrogen and phosphorus than Göta Älv and comparison between run off from green roof and run off from other roof materials shows lower values of the same chemical parameters. Since the values are taken from a report which contains schablon values, the results are just symbolic. A hypothetical calculation which shows that one year of estimated volume rainwater on a building example could provide for either 31 people/year total consumption or 100 people/year only for laundry and flushing toilets.

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