Sökning: "microbiological barrier"

Visar resultat 1 - 5 av 8 uppsatser innehållade orden microbiological barrier.

  1. 1. Evaluation of The Viral Reduction Potential using Ultrafiltration Membranes in the Drinking Water Treatment Process at Norrvatten

    Master-uppsats, KTH/Industriell bioteknologi

    Författare :Emma Eriksson; [2023]
    Nyckelord :Microbiological barrier; Ultrafiltration; NanoCeram filter; Drinking Water; Raw Water; Mikrobiologisk barriär; Ultrafiltering; NanoCeram filter; Dricksvatten; Råvatten;

    Sammanfattning : En pilotanläggning för ultrafiltering testas nu i Norrvattens reningsprocess för att undersöka ifall den kan användas som en tredje mikrobiologisk barriär i reningsprocessen. Målet med detta projekt är att testa membranets kapacitet att filtrera bort viruspartiklar men även membranet generella reduktionsförmåga för andra mikrobiologiska och kemiska kontamineringar. LÄS MER

  3. 2. Cradle-to-Gate LCA of Water Treatment Alternatives : A case study performed for Norrvatten’s future waterwork expansion

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

    Författare :Siddharth Selvarajan; [2021]
    Nyckelord :Life cycle assessment; Water purification method; Potable water production; Microbiological barrier; Activated carbon; Sludge separation; Livscykelbedömning; Vattenreningsmetod; Produktion av dricksvatten; Mikrobiologisk barriär; Aktivt kol; Slamavskiljnin;

    Sammanfattning : Norrvatten is a municipal association which owns a water treatment plant capable of supplying good quality drinking water to the consumers in the associated neighbouring municipalities. After preliminary investigations for the future year of 2050, there were estimates which suggest a potential water quality degradation in the lake which supplies the raw water for treatment due to uncertain future climatic conditions and other forms of pollutions from the surrounding. LÄS MER

  4. 3. Groundwater flow modelling to address hydrogeological response of a contaminated site to remediation measures at Hjortsberga, southern Sweden

    Kandidat-uppsats, Lunds universitet/Geologiska institutionen

    Författare :Adam Johansson; [2020]
    Nyckelord :PCP; Groundwater modelling; Permeable reactive barrier; Hjortsberga sawmill; Earth and Environmental Sciences;

    Sammanfattning : Pentachlorophenol (PCP) is a chlorinated aromatic compound that was commonly used for treatment of wood against microbial degradation before it got banned in the 1970s. Due to its solubility in water, PCP is a common groundwater contaminant around old sawmills, for example near Hjortsberga in southern Sweden where this study was performed.. LÄS MER

  5. 4. Exploration of how UV disinfection affects the microbial community in drinking water

    Master-uppsats, Lunds universitet/Teknisk mikrobiologi

    Författare :Sakarias Ekman; [2018]
    Nyckelord :heterotrophic plate count; qPCR; flow cytometry; drinking water; UV disinfection; bacterial community; applied microbiology; teknisk mikrobiologi; Technology and Engineering; Biology and Life Sciences;

    Sammanfattning : UV irradiation is getting increasingly popular as a disinfection step in drinking water production. Ringsjöverket, a drinking water treatment plant in Sweden installed a full-scale UV aggregate in December 2016. However, the effect of UV irradiation on drinking water has mainly been tested on specific pathogens in labscale environment. LÄS MER

  7. 5. Membrane screening to identify optimal properties when separating organic matter from Bolmen water

    Master-uppsats, Lunds universitet/Kemiteknik (CI)

    Författare :Olivia Söderman; [2017]
    Nyckelord :natural organic matter; ultrafiltration; nanofiltration; drinking water; membrane technology; water engineering; environmental engineering; vattenförsörjningsteknik; avloppsteknik; Chemistry;

    Sammanfattning : In many places across the northern hemisphere, drinking water treatment plants (WTPs) need to avert the effects of deteriorating quality in surface water sources caused by increasing lev-els of natural organic matter (NOM). The two major factors responsible for this phenomenon, also called brownification, are the greenhouse effect and changes in soil acidification. LÄS MER