Sökning: "QMRA"

Visar resultat 1 - 5 av 10 uppsatser innehållade ordet QMRA.

  1. 1. Hydraulic Modeling and Quantitative Microbial Risk Assessment of Intrusionin Water Distribution Networks Under Sustained Low-Pressure Situations

    Master-uppsats, Uppsala universitet/Luft-, vatten- och landskapslära

    Författare :Maryam Shakibi; [2022]
    Nyckelord :drinking water distribution network; EPANET; hydraulic modelling; low pressure; pathogen intrusion; Quantitative Microbial Risk Assessment QMRA ; distributionsnät för dricksvatten; EPANET; hydraulisk modellering; lågtryck; patogen inläckage; Kvantitativ mikrobiell riskbedömning QMRA ;

    Sammanfattning : Drinking water systems aim to remove, reduce, and prevent microbial contamination in water by usingmultiple barriers from catchments to consumers. Water distribution networks are vulnerable tocontamination from external sources if they lose their physical or hydraulic integrity. LÄS MER

  3. 2. A Risk Assessment Framework to Evaluate the Effect of Climate Change on Drinking Water Quality

    Master-uppsats, Uppsala universitet/Institutionen för geovetenskaper

    Författare :Shivam Gusain; [2022]
    Nyckelord :Climate change; quantitative microbial risk assessment; systematic review; drinking water;

    Sammanfattning : The impact of climate change on drinking water is one of the fastest-growing challenges within the water sector. Microbial contamination of drinking water has been a serious issue for decades now and will exacerbate in the coming future. LÄS MER

  4. 3. A Quantitative Microbial Risk Assessment Associated with Cross-Connections in the Drinking Water Network in Combination with Hydraulic Modeling

    Master-uppsats, Uppsala universitet/Institutionen för geovetenskaper

    Författare :Fatin Alzuhairi; [2022]
    Nyckelord :EPANET; QMRA; Water distribution network; Health risk analysis; Cross-connections and backflow; Low pressure; Water quality; Simulation; Pathogen; EPANET; QMRA; vattendistributionsnät; hälsoriskanalys; korskoppling; lågtryck; vattenkvalitet; simulering; patogen;

    Sammanfattning : Drinking water companies have the technology and responsibility to deliver safe and high-quality drinking water to the water distribution systems network (WDN). However, many events within the WDN, such as cross-connections and backflow, might degrade water quality and pose public health risks to consumers. LÄS MER

  5. 4. Pathogen inactivation and quantitative microbial risk assessment for Peepoo sanitation system, Kibera

    Master-uppsats, Uppsala universitet/Institutionen för geovetenskaper

    Författare :Linnea Eriksson; Lisa Sundberg; [2020]
    Nyckelord :Quantitative microbial risk assessment; ammonia sanitisation; faeces; risk assessment; inactivation model; pathogen; Ascaris; E. coli; Campylobacter; Enterococcus; sanitation system; sanitisation technology;

    Sammanfattning : Unsafe sanitation systems poses a risk for pathogen transmission, wherefore it is important to both inactivate pathogens present in human excreta and conduct safe sanitation systems from use to end-use. The Peepoo toilet, using ammonia sanitisation, have been suggested as a low-cost sanitation solution and is implemented in schools in Kibera, an urban slum in Kenya. LÄS MER

  7. 5. Development of monitoring program for water safety in small-scale water treatment plants in rural areas of Ecuador

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Institutionen för geovetenskaper

    Författare :Tone Sigrell; [2018]
    Nyckelord :Safe water; Quantitative microbial risk assessment; QMRA; Sustainable water access; Water quality monitoring; kvantitativ mikrobiell riskanalys; QMRA; hållbar dricksvattenförsörjning; vattenkvalitétsövervakningsprogram;

    Sammanfattning : Globally a major health concern according to the World health organization (WHO, 2011) is gastro-intestinal infections caused by fecally contaminated water. The access to drinking water has increased due to international efforts, however the long-term sustainability and safety of the water accessed have gained criticism, and many water sources have proven to be both contaminated (UN, 2016) and badly managed (WHO, 2016a). LÄS MER