Sökning: "Filtration efficiency"

Visar resultat 16 - 20 av 62 uppsatser innehållade orden Filtration efficiency.

  1. 16. Separation of microfibers from laundry waste water by hydrocyclone : In cooperation with Electrolux Professional

    Master-uppsats, Högskolan i Borås/Akademin för textil, teknik och ekonomi

    Författare :Anna Cecilia Carolina Lorentzon; [2021]
    Nyckelord :microfiber separation; microfibre separation; hydrocyclone; hydrocyclonic separation; microfibers; microfibres; laundry effluent; laundry waste water; laundry wastewater;

    Sammanfattning : Microfibers, textile fibres shorter than 5 mm, and are shed from fabrics during wear and released into the laundry effluent during washing. When passed through the wastewater treatment plant (WWTP), they adsorb toxins, heavy metals and pathogens before being released into the environment. LÄS MER

  3. 17. Optimisation of a small-scale ultrafiltration system for separation of humic substances from surface water

    Master-uppsats, KTH/Kemiteknik

    Författare :Nadia Nikzad; [2021]
    Nyckelord :Ultrafiltration; online-coagulation; pH; reaction time; coagulant dosage; NOM; humic substances; Ultrafiltrering; online-koagulation; pH; reaktionstid; koaguleringsdos; NOM; humusämnen;

    Sammanfattning : Norrvatten är den fjärde största dricksvattenproducenten i Sverige. De producerar och distribuerar dricksvatten till 14 kommuner norr om Stockholm. Norrvatten har under en tid studerat alternativa processer för att optimera och öka produktionskapaciteten och effektiviteten i deras dricksvattenreningsverk vid Görvälnverket. LÄS MER

  4. 18. Dispersion of cement-based grout with ultrasound and conventional laboratory dissolvers

    Master-uppsats, KTH/Byggvetenskap

    Författare :Antranik Karamanoukian; [2020]
    Nyckelord :ultrafine cement grout; microfine cement grout; dispersion; additives; ultrasound dissolver; laboratory dissolver; ultrafint cementbruk; mikrofin cementbruk; dispergering; tillsatser; ultraljud apparat; laboratorieblandaren;

    Sammanfattning : In any underground facilities especially tunnels, it is essential to seal the area against water ingress and leakage of reserved materials. Grouting is a common method used to seal rocks around tunnels, successful grouting reduces the duration and cost of the construction, guarantees better working environment and higher safety, minimizes the maintenance and most important decreases the corresponding environmental hazards significantly. LÄS MER

  5. 19. Method Development for Evaluating Pitch Dispersing Agents Used in the Kraft Pulping Process

    Uppsats för yrkesexamina på avancerad nivå, Luleå tekniska universitet/Institutionen för samhällsbyggnad och naturresurser

    Författare :Emma Olsson Månsson; [2020]
    Nyckelord :pitch deposit; dispersing agent evaluation; method development; calcium soaps;

    Sammanfattning : Depending on wood species and the extractives of the wood, the paper and pulp processes might suffer from problems caused by the formation of pitch deposits from calcium soaps. BIM Kemi is a specialty chemical producer supplying the pulp and paper industry with dispersing agents, which prevent these problems. LÄS MER

  7. 20. 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