Sökning: "primary settling treatment"

Visar resultat 1 - 5 av 7 uppsatser innehållade orden primary settling treatment.

  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. How the Choice of Primary Treatment Affects the Biogas Potential of Primary Sludge

    Master-uppsats, Lunds universitet/Kemiteknik (CI)

    Författare :Fanny Blom; [2022]
    Nyckelord :wastewater treatment; primary treatment; biogas potential; primary settling treatment; rotating belt filter; chemically enhanced primary treatment; environmental engineering; water resources engineering; Technology and Engineering;

    Sammanfattning : The global heating has resulted in rising temperatures and more extreme weather conditions around the world. In combination with increasing energy demands, this has led to an increasing demand of renewable energy. One option is utilizing the wastewater to produce biogas. There-fore, wastewater can be seen as a resource rather than waste. LÄS MER

  4. 3. Modelling control strategies for chemical phosphorus removal at Tivoli wastewater treatment plant

    Master-uppsats, Uppsala universitet/Institutionen för geovetenskaper

    Författare :Sara Rosendahl; [2021]
    Nyckelord :Wastewater treatment plant; phosphorus precipitation; control strategy; feedforward; feedback; ASM2d and primary clarifier model.;

    Sammanfattning : Wastewater compose an environmental risk as it contains high levels of nutrients, including phosphorus. Wastewater treatment plants (WWTPs) reduce phosphorus by using coagulants that precipitate soluble phosphate into metal phosphate, which is separated by settling. LÄS MER

  5. 4. CFD Modeling and Optimization of Primary sedimentation tank

    Master-uppsats, KTH/Vattendragsteknik

    Författare :Aibin Zhang; [2017]
    Nyckelord :VOF model; RNG k-ε model; velocity; turbulence; primary sedimentation tank;

    Sammanfattning : In this project, the flow field characteristics of the simplified 2D rectangular primary sedimentation tank in Syvab wastewater treatment plant were achieved by a transient water-air two phases finite-volume method, applying Volume-Of-Fluid (VOF) model. RNG k-ε turbulence model was also employed to calculate the turbulent kinetic energy and its dissipation rate. LÄS MER

  7. 5. Flytslam i Lövsta avloppsreningsverk : påverkande faktorer och potentiella åtgärder

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

    Författare :Matilde Kamp; [2016]
    Nyckelord :rising sludge; sludge characteristics; settling; wastewater treatment; nitrification; denitrification; intermittent aeration; flytslam; slamegenskaper; sedimentering; avloppsvattenrening; nitrifikation; denitrifikation; intermittent luftning;

    Sammanfattning : Ett avgörande steg i avloppsvattenrening med aktivslammetoden är att slammet kan avskiljas från det renade vattnet. Detta sker oftast i sedimenteringsbassänger. Sedimenteringsproblem är dock vanliga på många avloppsreningsverk, vilket kan leda till att föroreningar följer med utgående vatten. LÄS MER