Essays about: "chemical precipitation"

Showing result 1 - 5 of 70 essays containing the words chemical precipitation.

  1. 1. Bearbetningsmetoders påverkan på markorganismers aktivitet i jorden : i perenna odlingar samt i odlingssystem med mellangrödor

    University essay from SLU/Department of Biosystems and Technology (from 130101)

    Author : Jenny Olofsson; [2021]
    Keywords : markorganismer; respiration; organiskt material; odlingsmetoder; biologiska processer; kemiska processer och fysikaliska processer; perenna odlingssystem; mellangrödor; klimatförändringar; microbial activity; respiration; organic matter; soil tillage methods; biological processes; chemical processes and physical processes; perennial crops; conservation agriculture; intermediate crops; climate change;

    Abstract : Klimatförändringarna, som både påverkat och påverkar vår planet, kräver att mänskliga aktiviteter förändras till mer resurssnåla och systemeffektiva processer. I dessa processer bör markens bördighet vara det centrala, eftersom en bördig mark kan generera stabila skördar och bidra till en långsiktigt hållbar matförsörjning. READ MORE

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

    University essay from Uppsala universitet/Institutionen för geovetenskaper

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

    Abstract : 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. READ MORE

  3. 3. Lagring av skogsflis med och utan täckning : substansförlusters påverkan av nederbörd och vind

    University essay from SLU/Dept. of Energy and Technology

    Author : Daniel Wetterholm; [2021]
    Keywords : biobränsle; bränslekvalitet; substansförluster; fukthalt; data analys; lagring;

    Abstract : In the supply chain for wood chips, storage is a neccesary part due to seasonal demand. During storage there are several mechanisms occuring, cell respiration, biological degradation and thermo-chemical oxidative reaction. All of the mentioned mechanisms lead to increased temperature, loss of dry matter and energy. READ MORE

  4. 4. A Comparative LCA study on the refurbishment of quays with induced mineral deposition technology

    University essay from KTH/Hållbar utveckling, miljövetenskap och teknik

    Author : Remy Prame Joseph Jerald; [2020]
    Keywords : Refurbishment; Induced mineral deposition; Life cycle assessment; Climate change impact; Global warming potential;

    Abstract : A quay is a structure which is constructed along the shoreline for docking purposes. When the quay is constructed using reinforced concrete, damage over time happens under the combined action of chemical and mechanical corrosion of the varied materials. READ MORE

  5. 5. Evaluation of Carbon Source Addition on Denitrification Efficiency : A study in a continuous biological leachate water treatment system.

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

    Author : Isac Ingfeldt; [2020]
    Keywords : denitrification; nitrification; WWTP; carbon source; ethanol; glycerol; Brenntaplus VP1; nitrate; pilot;

    Abstract : In 2014 SÖRAB constructed a continuous biological treatment system (KBR) to handle leachate waterfrom the landfill at the facility in Löt, north of Stockholm. The KBR is mainly focused on removal ofammonium nitrogen which would otherwise be released in to the recipient and contribute toeutrophication and damage to the environment. READ MORE