Essays about: "phosphorus precipitation"

Showing result 6 - 10 of 43 essays containing the words phosphorus precipitation.

  1. 6. Evaluation of pollutant removal performance of stormwater biofilters in a Swedish climate : Comparison of three different filter media designs

    University essay from Luleå tekniska universitet/Institutionen för samhällsbyggnad och naturresurser

    Author : Anna Träff; [2022]
    Keywords : Stormwater biofilter; stormwater treatment; cold climate; filter media design; low impact development;

    Abstract : In the recent century, a process of urbanization has increased globally. Previously rural or natural land have been converted into impervious surfaces to make way for housing, industries, and roads. This anthropogenic process has resulted in an increased amount of surface runoff from precipitation, so-called stormwater. READ MORE

  3. 7. THE USE OF ALTERNATIVE NORMALIZATION APPROACHES TO UNDERSTAND CHANGES IN SARS-CoV-2 CONCENTRATIONS IN WASTEWATER

    University essay from Luleå tekniska universitet/Institutionen för samhällsbyggnad och naturresurser

    Author : Frida Isaksson; [2022]
    Keywords : wastewater-based epidemiology; SARS-CoV-2; normalization; population estimates; pepper mild mottle virus; clinical cases; infiltration inflow;

    Abstract : Following the detection of SARS-CoV-2 RNA fragments in wastewater in March 2020, the use of wastewater-based epidemiology is rapidly emerging as a non-invasive approach to assessing community wide COVID-19 prevalence. Wastewater-based epidemiology is promoted as a complement to clinical testing in terms of improving public health authorities’ preparedness and supporting them in taking required interventions to protect the public health. READ MORE

  4. 8. Sustainability assessment of urine concentration technologies

    University essay from Uppsala universitet/Institutionen för geovetenskaper

    Author : Matilda Gunnarsson; [2021]
    Keywords : Wastewater treatment; urine concentration; alkaline dehydration; nitrification-distillation; ion-exchange; struvite precipitation; MCA; Avloppsvattenrening; urinkoncentrering; alkalisk urintorkning; nitrifikations-destillering; jonbyte; struvitfällning; MKA;

    Abstract : The majority of the nutrients in household wastewater are found in the urine and in order to facilitate the use the nutrients in the urine as fertilizer, the urine can be can be concentrated. To extract the nutrients from the urine, various technologies for urine concentration are being developed today. READ MORE

  5. 9. 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

  6. 10. Initial nutrient retention capacity in a constructed wetland : Evaluating the effectiveness of a newly constructed wetland to reduce eutrophication symptoms in a Baltic Sea bay in northern Sweden

    University essay from Umeå universitet/Institutionen för ekologi, miljö och geovetenskap

    Author : Elin Eriksson; [2021]
    Keywords : retention; constructed wetland; total phosphorus; total nitrogen; nutrient dynamics; northern latitudes; nutrient mitigation measure;

    Abstract : Since the turn of the last century, a substantial increase in nutrient load to the Baltic Sea is apparent. Adding the ongoing environmental change with raising temperatures and increased precipitation, this will continue to have a prominent environmental impact on our coastal ecosystems, especially in northern latitudes. READ MORE