Sökning: "sludge"

Visar resultat 1 - 5 av 409 uppsatser innehållade ordet sludge.

  1. 1. Utveckling av marknader för avfallsbaserade resurser : En fallstudie på återanvändning av komplexa avfallsströmmar ur ett värdekedjeperspektiv

    Master-uppsats, Linköpings universitet/Industriell miljöteknik; Linköpings universitet/Industriell miljöteknik

    Författare :Elsa Bertils; Herman Elvingson; [2019]
    Nyckelord :waste; markets; market regulation; reuse; recycling; resource efficiency; value chain; sludge; bottom ash; slag; organic fertilizer; waste policy; policy; avfall; marknader; återvinning; återanvändning; resurseffektivitet; värdekedja; rötslam; biogödsel; slaggrus; bottenaska; Revaq; SPCR 120; handel; avfallslagstiftning; styrmedel; styrning;

    Sammanfattning : Immense amounts of waste are generated daily by our society, and the management of these streams is a critical societal function. Part of this work is reusing and recycling materials with attractive properties, which is also an imperative step towards circular material flows. LÄS MER

  2. 2. Olika filtermaterial vid jordbruksdränering

    Uppsats för yrkesexamina på avancerad nivå, SLU/Dept. of Soil and Environment

    Författare :Hanna Falk; [2019]
    Nyckelord :dräneringsfilter; mineralfilter; organiska filter; syntetiska filter;

    Sammanfattning : Drainage of arable land creates a better soil structure and a better aeration of the soil profile. Some fields are naturally drained, while others are dependent on drainage to create good cultivation conditions. Subsurface drainage is the most common method used to artificially drain arable land. LÄS MER

  3. 3. Spårning av tungmetaller i Västra strandens avloppsreningsverks ledningsnät

    Kandidat-uppsats, Högskolan i Halmstad/Akademin för ekonomi, teknik och naturvetenskap

    Författare :Kristian Johansson; [2019]
    Nyckelord :fosfor; uppströmsarbete; ecoscope; avloppsslam; slamspridning;

    Sammanfattning : Sewage sludge contains several important nutrients that can be utilized byrecycling to arable land. This is especially important for phosphorus which is a finite resource and an important nutrient in agriculture. It is, however, important that the sewage sludge is free from high concentrations of harmful substances. LÄS MER

  4. 4. Fjärranalys av kantzoner och död ved i Natura 2000- vattendrag : Hur har det förändrats över tid?

    Kandidat-uppsats, Umeå universitet/Institutionen för ekologi, miljö och geovetenskap

    Författare :Valdemar Samuelsson; [2019]
    Nyckelord :Riparian zone; LWD large woody debris ; remote sensing; Natura 2000; Kantzon; död ved; fjärranalys; Natura 2000;

    Sammanfattning : The forestry is the main use of forests in Sweden which results in a number of positive aspects but also a number of negative effects on our nature. Aquatic ecosystems are specifically exposed to land use by the forest industry. LÄS MER

  5. 5. Methods for Evaluating Dewatering Properties of Sewage Sludge

    Master-uppsats, Lunds universitet/Kemiteknik (CI)

    Författare :Nadia Abdalla; [2019]
    Nyckelord :sludge dewatering; sewage sludge; laboratory scale sludge treatment; dewatering sludge; dewatering sewage sludge; CST; capillary suction time test; centrifuge; lab-centrifuge; rheology; polymers conditioning; sludge conditioning; centrifuge on lab scale; evaluation of lab experiments; CST evaluation; mechanical de-watering evaluation; sludge dewatering at lab; lab scale dewatering process; sludge dewatering methods at lab; Chemical engineering; Lab centrifuge; Capillary Suction Time CST ; Mechanical sludge dewatering evaluation; Polymers conditioning of sludge; sewage sludge dewatering; methods for sludge dewatering at lab; water engineering; environmental engineering; vattenförsörjningsteknik; avloppsteknik; Chemistry;

    Sammanfattning : After the sewage wastewater is collected from different households and directed to the treatment plants, it goes through several processes, which are physical, chemical and biological. The different processes remove the contaminant, and produce a semi-solid material named sludge. Sludge has a huge amount of liquid. LÄS MER