Sökning: "Constructed wetlands"

Visar resultat 1 - 5 av 96 uppsatser innehållade orden Constructed wetlands.

  1. 1. Analys av sedimentackumulation i våtmarker i Rååns avrinningsområde och undersökning av våtmarkernas renoveringsbehov

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Institutionen för geovetenskaper

    Författare :Louise Lumsén; [2021]
    Nyckelord :Constructed wetlands; sedimentation; maintenance needs; Anlagda våtmarker; sedimentation; renoveringsåtgärder;

    Sammanfattning : Inom Rååns avrinningsområde, som är beläget i kommunerna Helsingborg, Landskrona, Svalöv och Bjuv, har anläggning av våtmarker pågått sedan 1990-talet. De anlagda våtmarkerna syftar till att minska näringsförlusterna från omkringliggande jordbruksmarker till vattendrag och gynna den biologiska mångfalden. LÄS MER

  2. 2. Modeling BOD removal in free watersurface constructed wetlands with variable residence time-based methods

    Master-uppsats, Lunds universitet/Avdelningen för Teknisk vattenresurslära

    Författare :Degefu Yohannes Sebro; [2021]
    Nyckelord :BOD removal; Free water-surface constructed wetlands; VART-BOD; models; dynamic diffusion zone; Technology and Engineering;

    Sammanfattning : Constructed wetlands (CWs) have been applied for several years in the removal process pollutants from secondary treatment plants and stormwater. In this paper, the Variable Residence Time (VART) model for solute transport in streams was extended to simulate the BOD removal process in free water surface flow constructed wetlands (FWS CWs). LÄS MER

  3. 3. Assessment of on-site wastewater treatment systems in unsewered communities in Jordan

    Master-uppsats, KTH/Hållbar utveckling, miljövetenskap och teknik

    Författare :Hani Yahya Ali Shubail; [2020]
    Nyckelord :Constructed wetland; Decentralized wastewater treatment; Jordan; On-site wastewater treatment system;

    Sammanfattning : Centralized wastewater treatment systems need substantial funds besides high-cost operation and maintenance programs, which could be considered unsuitable for low-income developing countries. As a solution, it becomes the trend towards on-site wastewater treatment systems (OWTs) due to its cost-effectiveness and flexibility of implementation and management. LÄS MER

  4. 4. Water quality and water availability at Gårdstånga Nygård

    Kandidat-uppsats, Lunds universitet/Avdelningen för Teknisk vattenresurslära

    Författare :Lina Lennklev; [2020]
    Nyckelord :Water resource management; Water quality; Agriculture; Water balance; Constructed wetlands; Surface water bodies; Technology and Engineering;

    Sammanfattning : The report investigated partly how agriculture on and near Gårdstånga Nygård affected the water quality in nearby surface water bodies during the period of testing, and partly whether the supply of water in the Rödabäck river basin is large enough to enable the construction of a well-functioning irrigation pond. The water quality was evaluated by collecting water samples in the field, reading the values of these samples for various water quality parameters and finally an evaluation of said values. LÄS MER

  5. 5. Kolbestånd i restaurerade våtmarker, En fältstudie av anlagda våtmarker i Lunds kommun

    Master-uppsats, Lunds universitet/Miljövetenskaplig utbildning

    Författare :Simon Lin; [2020]
    Nyckelord :Kolbestånd; kolhalt; kolinlagring; kolsänka; sediment; våtmark; Earth and Environmental Sciences;

    Sammanfattning : Sedimentation of organic carbon in shallow lakes and wetlands removes CO2 from the atmosphere and can be considered a natural carbon sink. Actions toward regulating restored wetlands as carbon sink would provide Lund municipality with solution to combat CO2 emission goals for the future. LÄS MER