Sökning: "Wastewater"

Visar resultat 31 - 35 av 941 uppsatser innehållade ordet Wastewater.

  1. 31. Bräddning av avloppsvatten : Möjlighet till rening för att skydda recipienten

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

    Författare :Marcus Dahlqvist; Hampus Lind; [2023]
    Nyckelord :Overflow; pumping stations; sewage; pipeline network; sustainable development; multicriteria analysis; treatment methods; Bräddning; pumpstationer; avlopp; ledningsnät; hållbar utveckling; multikriterieanalys; reningsmetoder;

    Sammanfattning : Rapporten handlar om olika reningstekniker vilka kan användas för att behandla avloppsvatten som släpps ut vid bräddning innan det når recipienten. Rapporten beskriver först vad bräddning är och även vilka problem som kan uppstå när orenat vatten släpps ut och vad det eventuellt kan innehålla. LÄS MER

  3. 32. TRACKING WASTEWATER EMISSIONS IN RIVERS ENTERING GULF OF BOTHNIA COAST

    Master-uppsats, Umeå universitet/Institutionen för ekologi, miljö och geovetenskap

    Författare :Helen Mkandawire; [2023]
    Nyckelord :Nutrients inputs; wastewater; coastal waters; Gulf of Bothnia; wastewater emissions; nutrient transportation; marine water; nutrient loading; eutrophication.;

    Sammanfattning : The Gulf of Bothnia consists of two sub-basins in the northern Baltic Sea: the Bothnian Sea (salinity 4-5‰) and Bothnian Bay (salinity 2-3‰). Changing nutrient concentrations and signs of eutrophication has recently been observed in the Gulf of Bothnia. LÄS MER

  4. 33. Constructed wetland for post-treatment of phosphorus in wastewater : An initial assessment of potential design and application to a small-scale water treatment plant in Åre municipality, Sweden

    Kandidat-uppsats, Mittuniversitetet/Institutionen för naturvetenskap, design och hållbar utveckling (2023-)

    Författare :Johan Arnemo; [2023]
    Nyckelord :: cold climate; ecological engineering; free water surface wetland; horizontal subsurface wetland; phosphorus treatment;

    Sammanfattning : In recent years, the treatment of phosphorus in Nyland's water treatment plant (located in Åre municipality) has been substandard. The problem has persisted despite attempts to lower the concentration to meet the emission requirements. LÄS MER

  5. 34. Experimental Study of Flow Fields in Moving Bed Biofilm Reactors

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

    Författare :Shea Nee Chew; [2023]
    Nyckelord :Moving bed biofilm reactors; Biofilm carriers; Mechanical mixing; Mixer configurations; Carrier mixing; Biofilmsreaktorer med rörlig bädd; Biofilmsbärare; Mekanisk blandning; Blandarkonfigurationer; Bärarblandning;

    Sammanfattning : With the rise in global energy prices, as well as energy consumption being the largest source of greenhouse gas emissions, biofilm-based systems utilized for wastewater treatment, such as moving bed biofilm reactors (MBBRs), have grown in popularity for their lower energy consumption compared to conventional activated sludge processes. However, this technology requires large amounts of energy to constantly distribute and suspend its biofilm carrier within the reactor by either aerators or mechanical mixers. LÄS MER

  7. 35. Dioxins: An Easy Problem to Solve or a Hard-Fought Battle for the Environment? a Case Study of How and Why the Pulp and Paper Industry in Sweden Transitioned Away From Chlorine-Bleaching

    Master-uppsats, Lunds universitet/Sociologiska institutionen; Lunds universitet/Sociologi

    Författare :Marcus Aronsson; [2023]
    Nyckelord :environmental sociology; ecological modernization; treadmill of production; middle-range; industrial transition; Social Sciences;

    Sammanfattning : The situation for the environment is in many ways dire. However, amidst all the negative environmental developments it is easy to neglect the successes that have actually happened. LÄS MER