Sökning: "phosphorus removal"

Visar resultat 11 - 15 av 97 uppsatser innehållade orden phosphorus removal.

  1. 11. Phosphorus reduction in wastewater using microalgae with different phosphorus starvation periods

    Master-uppsats, Luleå tekniska universitet/Institutionen för samhällsbyggnad och naturresurser

    Författare :Fredrika Murby; [2021]
    Nyckelord :;

    Sammanfattning : Anthropogenic induced nutrients in the Baltic Sea have led to 97% of it being eutrophic. Phosphorus is regarded the main regulating nutrient, and nearly 25% of the nutrients coming to the Baltic Sea originate from wastewater treatment plants. LÄS MER

  3. 12. Opportunities for increased nutrient recovery at centralised wastewater treatment plants through urine separation

    Master-uppsats, Uppsala universitet/Institutionen för geovetenskaper

    Författare :Hanna Gustavsson; [2021]
    Nyckelord :Nutrient recovery; urine separation; magnesium ammonium phospahte; MAP; ammonium sulphate; AMS; and DHI s WEST;

    Sammanfattning : Municipal wastewater contains a significant amount of nutrients such as phosphorus (P) and nitrogen (N). Therefore have the interest of recovering these nutrients at wastewater treatment plants (WWTP) increased. Nutrient recovery would generate revenue for the WWTP, as it is possible to sell the products as fertiliser. LÄS MER

  4. 13. Identifying factors that correlate with Enhanced Biological Phosphorus Removal upsets at Lundåkraverket

    Master-uppsats, KTH/Hållbar utveckling, miljövetenskap och teknik

    Författare :Rounak Niranjan; [2021]
    Nyckelord :Enhanced biological phosphorus removal; polyphosphate accumulating organisms; glycogen accumulating organisms; sludge content in aeration basin; nitrates in aeration basin; pH of incoming water; principal component analysis; pairwise correlations; inhibition factors;

    Sammanfattning : The Enhanced Biological Phosphorus Removal (EBPR) process is characterized as the most sustainable process to remove phosphorus from wastewater albeit with high variability in performance efficiency. Thus, unpredictable upsets in the EBPR system is the norm across several wastewater treatment plants throughout Sweden, forcing the hand of the operators to dose higher volume of chemicals to reach the effluent requirements. LÄS MER

  5. 14. Modelling control strategies for chemical phosphorus removal at Tivoli wastewater treatment plant

    Master-uppsats, Uppsala universitet/Institutionen för geovetenskaper

    Författare :Sara Rosendahl; [2021]
    Nyckelord :Wastewater treatment plant; phosphorus precipitation; control strategy; feedforward; feedback; ASM2d and primary clarifier model.;

    Sammanfattning : Wastewater compose an environmental risk as it contains high levels of nutrients, including phosphorus. Wastewater treatment plants (WWTPs) reduce phosphorus by using coagulants that precipitate soluble phosphate into metal phosphate, which is separated by settling. LÄS MER

  7. 15. Skumproblematik i avloppsreningen vid Holmen Bravikens pappersbruk : Orsak och lösningsförslag

    Master-uppsats,

    Författare :Isabelle Björklund; [2021]
    Nyckelord :massa- och pappersbruk; slamsvällning; COD:N:P; Extracellulära polymera ämnen; LSP; PCA; vedkomponenter;

    Sammanfattning : The treatment of industrial wastewater is an important measure to prohibit eutrophication and intoxication of lakes and oceans. Major industries often have location-basedwastewater treatment and to avoid undesired effluents it is essential to make it robust. LÄS MER