Sökning: "p removal"

Visar resultat 1 - 5 av 109 uppsatser innehållade orden p removal.

1. 1. Lifetime CostEffectiveness of Constructed Wetland and Rain Garden Facilities in Relation to Expected  Treatment Performance

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

   Författare :Abdullah Noorhussin Ali; [2023]
   Nyckelord :Stormwater; Total cost; StormTac; Cost-effectiveness;

   Sammanfattning : The purpose of this thesis is to investigate the cost effectiveness of two different stormwater control measure (SCM) facilities, namely a constructed wetland in Boden and a rain garden in Gothenburg (both Sweden), in relation to treatment efficiency and contributing catchment area. The study approach involved collection of data, construction, and maintenance activities with their respective costs, for the two stormwater control measures from commercial and literature data. LÄS MER

3. 2. Finding ways of optimizing coagulant dosage, for a more sustainable wastewater treatment process

   Master-uppsats, Lunds universitet/Kemiteknik (CI)

   Författare :Hanna Sjöman; [2023]
   Nyckelord :Wastewater treatment process; coagulant dosage; COD; machine learning; water and environmental engineering; Technology and Engineering;

   Sammanfattning : The wastewater treatment process at Oatly consists of several treatment steps of which, two are chemical treatment steps involving coagulation followed by flotation to remove phosphorous and COD. The coagulant dosage is mainly determined based on the operator’s experience and supported using results from jar tests. LÄS MER

4. 3. Ecological impacts of dam removal in Swedish inland waters : Effects on water chemistry and fish demography

   Master-uppsats, Karlstads universitet/Fakulteten för hälsa, natur- och teknikvetenskap (from 2013)

   Författare :Johanna Ekman; [2023]
   Nyckelord :biology; ecology; dam removal; Sweden; impact; inland waters; ecosystem; water chemistry; fish demography; Perca fluviatilis; European perch; biologi; ekologi; dammutrivning; Sverige; påverkan; inlandsvatten; ekosystem; vattenkemi; fiskdemografi; Perca fluviatilis; abborre;

   Sammanfattning : Dams play an important role in our society, but their negative impacts on aquatic ecosystems have led to a need for conservation efforts to mitigate the negative effects. In some instances, dam removal has been suggested to be the most economically and ecologically beneficial restoration method to improve longitudinal connectivity. LÄS MER

5. 4. Sand och fyra reaktiva filters avskiljningsförmåga av metaller frånvägdagvatten : Fältstudie under vintertid

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

   Författare :Anders Melander; [2023]
   Nyckelord :Stormwater treatment; Metal removal; Reactive filters; Sand filter; Road runoff; Dissolved metals; Total metals; Dagvattenbehandling; Metallavskiljning; Reaktiva filter; Sandfilter; Vägavrinning; Lösta metaller; Totala metaller;

   Sammanfattning : Dagvatten från urbana områden utgör en ökande utmaning för växande städer, eftersom det för med sig metallpartiklar och andra föroreningar från hårdgjorda ytor till närliggande vattenförekomster. Dessa föroreningar kan härstamma från källor som fordonstrafik och korrosion av metallstrukturer. LÄS MER

7. 5. Potential for Enhanced Biological Phosphorus Removal in an activated sludge system for greywater

   Master-uppsats, Lunds universitet/Kemiteknik (CI)

   Författare :Mehrzad Ghassemi; [2022]
   Nyckelord :Greywater; EBPR; Phosphorus; Biological treatment; Water and environmental engineering; Technology and Engineering;

   Sammanfattning : As the world's population grows, concerns about water scarcity and rising pollution such as phosphorus and nitrogen have increased significantly. Greywater has been considered by researchers as an ideal alternative to fresh water for decades, and several projects have been implemented to treat and recycle it for various reuse purposes. LÄS MER