Sökning: "BNR"

Hittade 3 uppsatser innehållade ordet BNR.

1. 1. Potential of waste-derived VFAs-bearing effluents as an external carbon source for MBBR denitrification of domestic wastewater

   Magister-uppsats, Högskolan i Borås/Akademin för textil, teknik och ekonomi

   Författare :Seyed Reza Manafi Khosroshahi; [2022]
   Nyckelord :Volatile fatty acids; Denitrification; Wastewater treatment; Biological nutrient removal; Nitrate removal; Electron accepter; Carbon source; Electron doner; Moving bed biofilm reactor; Nanofiltration; VFA concentration; Discharge standards; Carriers; acclimatization; VFAs; MMBR; NF; WWTP; BNR;

   Sammanfattning : In conventional wastewater treatment plants, methanol, ethanol, and acetate are used as carbon source for the denitrification process in the biological nutrient removal. However, growing concern regarding economical costs and carbon footprints from the fossil-based production of these chemicals have forced the companies to look for other alternatives. LÄS MER

3. 2. Evaluating the suitability of carbon source from fermentation of primary filter sludge for biological nutrient removal

   Master-uppsats, Lunds universitet/Kemiteknik (CI)

   Författare :Sanna Sahlin; [2021]
   Nyckelord :Wastewater treatment; batch activity tests; NUR tests; anaerobic P release tests; EBPR; denitrification; removal rates; internal carbon source; fermentate; water and environmental engineering; Technology and Engineering;

   Sammanfattning : Traditional biological nutrient removal (BNR) processes in wastewater treatment require access to easily biodegradable carbon in order to achieve sufficient removal. However, a lot of the carbon in the influent wastewater is not directly available for BNR bacteria but need to undergo hydrolysis first. LÄS MER

4. 3. Production of volatile fatty acids by hydrolysing sludge from Sjölunda WWTP

   Master-uppsats, Lunds universitet/Kemiteknik (CI)

   Författare :Simon Gidstedt; [2017]
   Nyckelord :wastewater treatment plant; WWTP; activated sludge; primary sludge; sludge; batchwise hydrolysis; hydrolysis; Volatile fatty acids; VFA; water engineering; environmental engineering; Chemistry;

   Sammanfattning : The biological nutrient removal (BNR) processes at Wastewater Treatment Plants (WWTPs) require easily degradable carbon, such as volatile fatty acids (VFAs), to work efficiently. Because of economical, and environmental reasons it is desired to utilize the organic content in the incoming wastewater instead of using an external carbon source. LÄS MER