Sökning: "controlled eutrophication"

Visar resultat 1 - 5 av 14 uppsatser innehållade orden controlled eutrophication.

  1. 1. Utilizing wood ash to stimulate algal growth in mine waters from northern Sweden

    Master-uppsats, Luleå tekniska universitet/Geovetenskap och miljöteknik

    Författare :Katelyn Murphy; [2023]
    Nyckelord :acid rock drainage; acid mine drainage; controlled eutrophication;

    Sammanfattning : Acid rock drainage (ARD), caused by the oxidation of sulphide bearing minerals, continues to be an environmental impact of both closed and operational mines, leading to waters with low pH values and high metal concentrations (Park et al., 2019). LÄS MER

  3. 2. Ammonium-Based Aeration Control with Iterative Set-Point Tuning in Wastewater Treatment Plants

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Avdelningen för systemteknik

    Författare :Tom Bärnheim; [2023]
    Nyckelord :adaptive control; ammonium-based aeration control; ammonium feedback control; iterative set-point tuning; process control; wastewater treatment;

    Sammanfattning : In wastewater treatment plants, the amount of ammonium is one example of a measure to determine the quality of the effluent wastewater. Ammonium is regarded as a hazardous chemical for aqueous ecosystems and can cause eutrophication due to its high nitrogen content. LÄS MER

  4. 3. Potential for Enhanced Biological Phosphorus Removal in an activated sludge system for greywater

    Master-uppsats, Lunds universitet/Kemiteknik (CI)

    Författare :Mehrzad Ghassemi; [2022]
    Nyckelord :Greywater; EBPR; Phosphorus; Biological treatment; Water and environmental engineering; Technology and Engineering;

    Sammanfattning : As the world's population grows, concerns about water scarcity and rising pollution such as phosphorus and nitrogen have increased significantly. Greywater has been considered by researchers as an ideal alternative to fresh water for decades, and several projects have been implemented to treat and recycle it for various reuse purposes. LÄS MER

  5. 4. Undersökning av nyckeltal vid kemisk fällning av fosfor med järnklorid

    Uppsats för yrkesexamina på grundnivå, KTH/Skolan för kemi, bioteknologi och hälsa (CBH)

    Författare :Erika Montelius; [2022]
    Nyckelord :Kemisk fällning; järnklorid; fosforrening; avloppsvattenrening;

    Sammanfattning : Himmerfjärdsverket i Grödinge drivs av Syvab vars uppgift är att ta emot och rena avloppsvatten. Vattnet renas från organiskt material, kväve och fosfor och släpps sedan ut till Syvabs recipient Himmerfjärden. Syftet är att skydda miljön mot utsläpp som kan påverka Östersjön och minska övergödningen. LÄS MER

  7. 5. Creating, delivering, and capturing value through sustainability : an exploratory study on the early development of commercial aquaponics in Sweden

    Master-uppsats, SLU/Dept. of Economics

    Författare :Fardosa Farah; Rita Ndum; [2022]
    Nyckelord :aquaponics; business model; business model innovation; sustainability; sustainable innovation; sustainable business model innovation; aquaculture; recirculating aquaculture system;

    Sammanfattning : Aquaculture is one of the fastest-growing food sectors in the world, and the increasing world population is said to only increase the need for more seafood. However, the sustainability of the aquaculture has been questioned recently and measures have been taken to overcome and internalize the negative externalities. LÄS MER