Essays about: "Acidic wastewater"

Found 5 essays containing the words Acidic wastewater.

1. 1. Hydrolysis of waste activated sludge from pulp and paper mills : effect on dewatering properties and biogas potential by utilizing existing side streams

   University essay from Linköpings universitet/Tema Miljöförändring

   Author : Louise Hjalmarsson; [2021]
   Keywords : hydrolysis; dewatering properties; biogas; sludge; waste activated sludge;

   Abstract : A big challenge within pulp and paper mills is the large quantities of waste activated sludge (WAS) that is produced during the wastewater treatment. The WAS is made up of biological cells and extra polymeric substances (EPS) and can bind a large amount of water causing difficulties to dewater the WAS. READ MORE

3. 2. Volatile fatty acid production and application as external carbon source for denitrification

   University essay from KTH/Hållbar utveckling, miljövetenskap och teknik

   Author : Cora Michelle Döhler; [2020]
   Keywords : VFAs; co-fermentation; primary sludge; food waste; denitrification; external carbon source; MBBR;

   Abstract : By rethinking wastewater treatment plants (WWTPs) as resource recovery facilities, it is possible to de- velop the next generation of WWTPs. Moreover, it allows to accomplish environmental goals, such as reducing the CO2 footprint, and comply with increasing effluent standards regarding the concentration of nitrogen in a more sustainable way. READ MORE

4. 3. Dephosphorisation of Acidic Wastewater : Aimed to allow the recirculation of byproducts as slag builders

   University essay from KTH/Skolan för industriell teknik och management (ITM)

   Author : Henrik Welander; Martin Palm; [2018]
   Keywords : Phosphorus removal; Use of Polonite®; Sustainable Metallurgy; Recycling; Neutralization of Wastewater.; Fosforrening; Användning av Polonite®; Hållbar Metallurgi; Återvinning; Neutralisering av Avfallsvatten.;

   Abstract : This study was conducted to evaluate if Polonite® could remove Phosphorus from Sandvik’s wastewater that naturally forms during steelmaking, and hence be proficiently used as a precursor of the neutralization process of said steel plant. Currently lime (CaO) is mixed with the wastewater which creates clean water and sediments, that later need to be landfilled. READ MORE

5. 4. Neutralizing acidic wastewater from the pickling process using slag from the steelmaking process : A pilot study in project "Neutralsyra"

   University essay from KTH/Materialvetenskap

   Author : Julia Brännberg Fogelström; Amelie Lundius; Hedda Pousette; [2017]
   Keywords : Slag; Neutralization; Lime; Lime Concentrate; Acidic wastewater; pH; Landfill; Byproducts; Slagg; Neutralisering; Kalk; Kalkkoncentrat; Surt avfallsvatten; pH; Deponi; Restprodukter;

   Abstract : Properties and origins of two byproducts from steelmaking plants, slag and acidic wastewater, are investigated in this report. The slags' suitability as neutralizing agents of acidic wastewater from the pickling process, with regard to amount of slag required and the environmental impact of the produced byproducts is investigated. READ MORE

6. 5. Fate of Heavy Metals in Waste to Energy (WtE) Processes

   University essay from KTH/Skolan för kemivetenskap (CHE)

   Author : Ninus Chamoun; Viktor Kjellvertz; William Mahajan; Yuanchao Song; [2016]
   Keywords : Wastewater treatment; Removal of heavy metals; Precipitation; Condensate treatment; Modelling with PHREEQC and Medusa;

   Abstract : This study was made to increase the understanding of how heavy metals in the aqueous phase are removed at low initial concentrations in different pH and Eh values. The reaction that has been studied is mainly hydroxide precipitation and adsorption in a condensate treatment. READ MORE