Sökning: "Municipal wastewater treatment"

Visar resultat 11 - 15 av 70 avhandlingar innehållade orden Municipal wastewater treatment.

  1. 11. Ammonium Feedback Control in Wastewater Treatment Plants

    Författare :Linda Åmand; Bengt Carlsson; Peter Vanrolleghem; Uppsala universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; aeration control; ammonium feedback control; biological nitrogen removal; full-scale experiments; gain scheduling control; PI control; process control; repetitive control; wastewater treatment; Elektroteknik med inriktning mot reglerteknik; Electrical Engineering with specialization in Automatic Control;

    Sammanfattning : The aeration process is often the single largest consumer of electricity in a wastewater treatment plant. Aeration in biological reactors provides microorganisms with oxygen which is required to convert ammonium to nitrate. Ammonium is toxic for aqueous ecosystems and contributes to eutrophication. LÄS MER

  3. 12. Communities of microalgae and bacteria in photobioreactors treating municipal wastewater

    Författare :Ivo Krustok; Monica Odlare; Emma Nehrenheim; Jaak Truu; Catherine Legrand; Mälardalens högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Energy- and Environmental Engineering; energi- och miljöteknik;

    Sammanfattning : Everyone who uses water produces wastewater. This inevitability creates several problems that increase with the growth of the population and industry. LÄS MER

  4. 13. Co-digestion of microalgae and sewage sludge - A feasibility study for municipal wastewater treatment plants

    Författare :Jesper Olsson; Eva Thorin; Sebastian Schwede; Emma Nehrenheim; Raúl Muñoz Torre; Mälardalens högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Microalgae; Anaerobic digestion; dewaterability; BMP-experiments; Energy- and Environmental Engineering; energi- och miljöteknik;

    Sammanfattning : The increased emissions of anthropogenic greenhouse gases over the last 100 years is the reason for the acceleration in the greenhouse effect, which has led to an increase of the globally averaged combined land and ocean surface temperature of 0.85 °C between 1880 and 2012. LÄS MER

  5. 14. Wastewater treatment from pharmaceutical substances with filamentous fungi

    Författare :Brigita Dalecka; Gunaratna Kuttuva Rajarao; Talis Juhna; Paul Van der Wielen; Lima Nelson; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Filamentous fungi; municipal wastewater; pharmaceutical substances; fungal fluidized bed pelleted bioreactor; nutrients; diclofenac; ketoprofen; Trametes versicolor; Aspergillus luchuensis; Filamentösa svampar; kommunalt avloppsvatten; läkemedelsrester; bioreaktor; näringsämnen; diklofenak; ketoprofen; Trametes versicolor; Aspergillus luchuensis; Mikroskopiskās sēnes; sadzīves notekūdeņi; farmaceitiskās vielas; mikroskopisko sēņu bioreaktors; diklofenaks; ketoprofens; Trametes versicolor; Aspergillus luchuensis; Bioteknologi; Biotechnology;

    Sammanfattning : The ever-increasing concern about the widespread occurrence of pharmaceutical substances in the aquatic environment has been recognized as an emerging environmental issue as it can cause undesirable effects on the ecosystem and human health. The current wastewater treatment methods are not designed to treat municipal wastewater from the contamination of various pharmaceutical substances. LÄS MER

  7. 15. Wastewater treatment and biomass generation by Nordic microalgae : growth in subarctic climate and microbial interactions

    Författare :Lorenza Ferro; Christiane Funk; Francesco Gentili; Luísa Gouveia; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Microalgae; Wastewater; Nitrogen; Phosphate; Biomass; Lipids; Subarctic Climate; Light; Temperature; Bacteria; Photoautotrophy; Heterotrophy; Mixotrophy; HRAP; Metabarcoding; Microbial Communities; Alpha-diversity; Environmental Factors; Biochemistry; biokemi; mikrobiologi; Microbiology;

    Sammanfattning : Nordic native microalgal strains were isolated, genetically classified and tested for their ability to grow in municipal wastewater. Eight of the isolated strains could efficiently remove nitrogen and phosphate in less than two weeks. Two of these strains, Coelastrella sp. LÄS MER