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Hittade 2 uppsatser som matchar ovanstående sökkriterier.

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. Treatment of Spent Pickling Acid from Stainless Steel Production : A review of regeneration technologies with focus on the neutralisation process for implementation in Chinese industry

   Master-uppsats, KTH/Industriell ekologi

   Författare :Lena Dahlgren; [2010]
   Nyckelord :acid regeneration; acid neutralisation; pickling waste water treatment; environmental effects of stainless steel production; nitrate reduction; High Density Sludge process; HDS process; syraåtervinning; neutralisering; behandling av avlopp från betning; denitrifiering; miljöeffekter av stålproduktion; High Density Sludge process; HDS;

   Sammanfattning : Pickling is a unit operation within stainless steel production, which means treating the steel with hydrofluoric acid (HF) and nitric acid (HNO3), also called mixed acid. The whole process generates waste water streams which have to be treated before released to recipient. LÄS MER