Sökning: "pollutant removal"

Visar resultat 1 - 5 av 33 uppsatser innehållade orden pollutant 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. Change in uptake and transfer of zinc in the food chain when predatory fish disappear from the system

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

   Författare :Sara Westerström; [2023]
   Nyckelord :Aquatic food web; Food chain structure; Trophic transfer; Decline of top predators; Stage-structured biomass model; Pollutants; Heavy metals; Zinc; Akvatisk födoväv; Födovävsstruktur; Trofisk överföring; Minskning av toppredatorer; Stegstrukturerad biomassamodell; Föroreningar; Tungmetaller; Zink;

   Sammanfattning : There is a widespread distribution of possibly toxic heavy metals, such as zinc, in aquatic ecosystems. Simultaneously aquatic food webs are changing due to declining predatory fish stocks. LÄS MER

4. 3. Modelling the full-scale N2O emissions from wastewater treatment plants for identifying mitigation strategies

   Master-uppsats, Lunds universitet/Kemiteknik (CI)

   Författare :Naga Deepika Peddamudium; [2023]
   Nyckelord :Modelling; simulation; ASM2dISS; N2O production pathways; N2O emission factor; mitigation strategies; water and environmental engineering; Technology and Engineering;

   Sammanfattning : Nitrous oxide (N2O) emissions, which primarily originate from the biological nitrogen removal process, dominate the release of greenhouse gases (GHGs) in wastewater treatment plants (WWTPs). N2O production occurs through dynamic microbial pathways that have a significant impact on the environment compared with other GHG emissions. LÄS MER

5. 4. Towards finding model pollutants for predicting CEC adsorption on biochars : The suitability of using dyes as proxies for CEC removal efficiency to enable wastewater reuse

   Kandidat-uppsats, Umeå universitet/Kemiska institutionen

   Författare :Alexandra Aveling; [2022]
   Nyckelord :;

   Sammanfattning : This study evaluated the use of common dyes as model pollutants for adsorption on biochar. Pollutant removal efficiency of five dyes and three CECs on three different biochars (SWP-550, SWP-700, NDG-SW) was evaluated, using both UV-VIS spectrophotometry and LC-MS/MS, to examine similarities and differences in adsorption performance. LÄS MER

7. 5. Evaluation of pollutant removal performance of stormwater biofilters in a Swedish climate : Comparison of three different filter media designs

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

   Författare :Anna Träff; [2022]
   Nyckelord :Stormwater biofilter; stormwater treatment; cold climate; filter media design; low impact development;

   Sammanfattning : In the recent century, a process of urbanization has increased globally. Previously rural or natural land have been converted into impervious surfaces to make way for housing, industries, and roads. This anthropogenic process has resulted in an increased amount of surface runoff from precipitation, so-called stormwater. LÄS MER