Essays about: "fosforrening"

Showing result 1 - 5 of 7 essays containing the word fosforrening.

  1. 1. A literature study on measurement methods for calculating the FeO activity in slag

    University essay from KTH/Materialvetenskap

    Author : Rebecca Rosén; [2020]
    Keywords : ;

    Abstract : During the time we live in, climate change is more important than ever. HYBRIT, formed bySSAB, LKAB, and Vattenfall, is an initiative set out to make the steel production fossil free, by developing a novel process that produce direct reduced iron (DRI) using hydrogen as reagent. Electric arc furnaces (EAF) will then be employed to melt the DRI. READ MORE

  3. 2. Mapping spontaneous biological phosphorus removal in a membrane bioreactor process without the anaerobic condition : Investigating the effect of alternative external carbon sources

    University essay from KTH/Hållbar utveckling, miljövetenskap och teknik

    Author : Ross Roberts; [2020]
    Keywords : enhanced biological phosphorus removal; PAO; anoxic; carbon source; ethanol; ORP;

    Abstract : Phosphorus removal in wastewater treatment is commonly achieved by chemical precipitation, enhanced biological phosphorus removal (EBPR) or a simultaneous combination of the two. A defined anaerobic condition is widely regarded as the critical element to sustain EBPR. However, this study demonstrates that EBPR is indeed occurring in a 4. READ MORE

  4. 3. Mapping of spontaneous biological phosphorous removal in MBR-process

    University essay from KTH/Skolan för kemi, bioteknologi och hälsa (CBH)

    Author : Benjamin Fridh; [2020]
    Keywords : Polyphosphate poly-P ; Phosphorous;

    Abstract : An unexpected biological removal of phosphorous in IVL Hammarby Sjöstadsverket pilot membrane bioreactor (MBR) wastewater treatment process was investigated by three distinct methods. a) Investigation and quantification of the biological phosphorous uptake (bio-P) capacity by phosphate release tests (PRT), b) validation of bio-P occurrence by granular polyphosphate (poly-P) staining and microscopy and c) metagenomic community structure analysis to map the sludge habitat. READ MORE

  5. 4. 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

  6. 5. Phosphorus and Nitrogen Removalin Modified Biochar Filters

    University essay from Uppsala universitet/Institutionen för geovetenskaper

    Author : Ylva Stenström; [2017]
    Keywords : biochar; modified biochar; phosphorus filter; wastewater; batch adsorption experiment; nitrogen filter; COD; Tot-P; Tot-N; biokol; impregnerat biokol; fosforfilter; avloppsvatten; skakexperiment; kvävefilter; COD; Tot-P; Tot-N;

    Abstract : Onsite wastewater treatment systems in Sweden are getting old and many of them lack sufficient phosphorus, nitrogen and organic carbon reduction. Biochar is a material that has been suggested as an alternative to the common sand or soil used in onsite wastewater treatment systems. READ MORE