Sökning: "chemical oxygen demand COD"

Visar resultat 16 - 20 av 47 uppsatser innehållade orden chemical oxygen demand COD.

  1. 16. Wastewater from a biodiesel plant: characterization of streams and suggestions for treatment options

    Master-uppsats, Lunds universitet/Kemiteknik (CI)

    Författare :Linnea Andersson; [2017]
    Nyckelord :water engineering; environmental engineering; avloppsteknik; vattenförsörjningsteknik; Technology and Engineering;

    Sammanfattning : Biodiesel is an important alternative to ordinary diesel when limiting the effects on the climate. However, the production path of biodiesel produces a wastewater with a high chemical oxygen demand (COD) and it needs to be cleaned. The aim of this study was to characterise biodiesel wastewater as well as to suggest treatment options. LÄS MER

  3. 17. Inhibition of Nitrification in Industrial Wastewater - Identification of Sources

    Master-uppsats, Lunds universitet/Kemiteknik (CI)

    Författare :Vidar Aspelin; Jennifer Ekholm; [2017]
    Nyckelord :nitrite; nitrate; industrial wastewater; inhibition of nitrification; additivity; nitrifikationshämning; water engineering; environmental engineering; vattenförsörjningsteknik; avloppsteknik; Technology and Engineering;

    Sammanfattning : The discharge of industrial wastewaters (WWs) to wastewater treatment plants (WWTPs) can be problematic due to their sometimes elevated concentrations of toxic compounds compared to municipal wastewater. Also, industrial WWs often contain compounds that are unique to the specific production, and the receiving WWTP is not always designed to remove these compounds. LÄS MER

  4. 18. Evaluation of the effect of different SCOD/TN ratios in a mainstream nitritation process

    Master-uppsats, Lunds universitet/Kemiteknik (CI)

    Författare :Doaa el Halabi; [2017]
    Nyckelord :Partial nitrification; nitritation; microscreen; filtration; Chemical oxygen demand; moving bed biofilm reactor; Partial nitrification anammox; PNA.; Technology and Engineering;

    Sammanfattning : Avloppsvatten är rikt på organiskt material, det organiska materialet har med fördel använts för biogasproduktion. Den traditionella kvävereningsprocessen kräver organiskt material, därför har ett extern organiskt material använts. LÄS MER

  5. 19. Hydrodynamic cavitation applied to anaerobic degradation of fats, oils and greases (FOGs)

    Master-uppsats, Linköpings universitet/Tema Miljöförändring

    Författare :Johan Lunnbäck; [2016]
    Nyckelord :FOG; Hydrodynamic cavitation; Anaerobic digestion; Pre-treatment; Oil emulsion;

    Sammanfattning : To increase profitability for biogas production, new innovative substrates and condition of operations needs to be implemented. At the current state, fats, oils and greases (FOGs) represent a promising substrate even though it brings operational challenges to the anaerobic digestion process. LÄS MER

  7. 20. Biodiesel and Hydrogen Production : A Study of Nostoc sp. in Pulp and Paper Wastewater

    Uppsats för yrkesexamina på avancerad nivå, Umeå universitet/Institutionen för tillämpad fysik och elektronik

    Författare :Duane Kimani; [2016]
    Nyckelord :Bioenergy; Hydrogen Production; Biodiesel; Cyanobacteria; Wastewater treatment;

    Sammanfattning : The modernized world is over-consuming low-cost energy sources that strongly contributes to environmental stress. As a consequence, the interest for environmentally friendly alternatives has increased immensely. One such alternative is utilizing the diazotrophic nature of the heterocystous filamentous cyanobacteria Nostoc sp. LÄS MER