Sökning: "Settling velocity"

Visar resultat 1 - 5 av 15 uppsatser innehållade orden Settling velocity.

  1. 1. Wastewater Characterisation for Design and Modelling of Primary Settlers at Municipal Wastewater Treatment Plants

    Master-uppsats, Lunds universitet/Industriell elektroteknik och automation

    Författare :Louise Westin; [2023]
    Nyckelord :Primary Settling Tank; Wastewater Treatment; Settleometer; Particle Settling Velocity Distribution; Modelling.; Technology and Engineering;

    Sammanfattning : The primary settling tank (PST) is often one of the first treatment steps at a wastewater treatment plant (WWTP) and is the first process in the plant to remove significant amounts of suspended solids. Its role in wastewater treatment however, has oftentimes been neglected and little effort has been made to optimize and model the process. LÄS MER

  3. 2. Kritisk sedimenteringshastighet

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Luft-, vatten- och landskapslära

    Författare :Max Mohlander; [2023]
    Nyckelord :Sedimentation; secondary settling tank; activated sludge; sludge blanket; sludge blanket leve; modelling; Takács; Bürger-Diehl; temperature; Sedimentering; mellansedimenteringsbassäng; aktivt slam; slamtäcke; slamnivå; modellering; Takács; Bürger-Diehl; temperatur;

    Sammanfattning : Mellansedimenteringsbassänger är inte sällan flaskhalsen för flödeskapaciteten vid reningsverk. För höga flöden kan leda till slamflykt, vilket påverkar efterkommande reningssteg negativt. Om en stor mängd slam från systemet försvinner kan detta även påverka det biologiska reningssteget negativt. LÄS MER

  4. 3. Hydrodynamic modelling of fate and transport of natural organic matter and per- and polyfluoroalkyl substances in Lake Ekoln

    Master-uppsats, Uppsala universitet/Institutionen för geovetenskaper

    Författare :Frida Ekman; [2021]
    Nyckelord :Ekoln; Natural organic matter NOM ; Total organic matter TOC ; Colour; degradation; sedimentation; photooxidation; PFAS; MIKE 3 FM; Ekoln; naturligt organiskt material NOM ; totalt organiskt kol TOC ; färg; nedbrytning; sedimentation; foto-oxidation; PFAS; MIKE 3 FM;

    Sammanfattning : Societies are facing great challenges with obtaining a good quality and quantity of drinking water in the context of climate change. Increases in natural organic matter (NOM) and per- and polyfluoroalkyl substances (PFAS) have been observed in lakes and drinking water the past years, which is of great concern for water treatment plants in Sweden. LÄS MER

  5. 4. Phosphorus accumulation in constructed wetlands : A study of 10 wetlands constructed on agricultural clay soils in Södermanland

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

    Författare :Gabriella Corbee; [2021]
    Nyckelord :Phosphorus retention; sedimentation; hydraulic load; Fosforavskiljning; sedimentation; hydraulisk belastning;

    Sammanfattning : Eutrophication is a major problem causing algal blooms and impaired water quality, especially regarding coastal areas and seas. It is a result of an excessive supply of nutrients such as phosphorus (P), where agriculture accounts for the largest share of the anthropogenic nutrient load. LÄS MER

  7. 5. Deposition of a Polydisperse Aerosol in the Upper Respiratory Tract

    Master-uppsats, Lunds universitet/Ergonomi och aerosolteknologi

    Författare :Fanny Bergman; [2020]
    Nyckelord :Aerosol; particle deposition; upper airways; inhalation measurements; polydisperse aerosol generation; mouth-throat model; Technology and Engineering;

    Sammanfattning : Inhaled pharmaceuticals are commonly used in the treatment of respiratory disease. This method of administration has many advantages but also poses a problem with particles being lost before reaching the target site. Particle deposition in airways is mainly an effect of inertial impaction, gravitational settling and diffusion. LÄS MER