Sökning: "on-site wastewater treatment systems"

Visar resultat 1 - 5 av 13 uppsatser innehållade orden on-site wastewater treatment systems.

  1. 1. Fertiliser derived from human urine : novel media for alkaline urine dehydration

    Master-uppsats, SLU/Dept. of Energy and Technology

    Författare :Christopher Friedrich; [2021]
    Nyckelord :nutrient recovery; fertiliser; urine drying; source separation; magnesium oxide; calcium hydroxide;

    Sammanfattning : Every year, each human excretes approximately 4 kg of nitrogen, 1 kg of potassium and 0.3 kg of phosphorus through their urine. In conventional wastewater treatment, these nutrients are usually not recovered for agricultural production, although they can enhance plant growth. LÄS MER

  3. 2. Assessment of on-site wastewater treatment systems in unsewered communities in Jordan

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

    Författare :Hani Yahya Ali Shubail; [2020]
    Nyckelord :Constructed wetland; Decentralized wastewater treatment; Jordan; On-site wastewater treatment system;

    Sammanfattning : Centralized wastewater treatment systems need substantial funds besides high-cost operation and maintenance programs, which could be considered unsuitable for low-income developing countries. As a solution, it becomes the trend towards on-site wastewater treatment systems (OWTs) due to its cost-effectiveness and flexibility of implementation and management. LÄS MER

  4. 3. Survey of systems for utilizing produced biogas in asmall-scale wastewater treatment plant: Storvreta, Uppsala

    Kandidat-uppsats, KTH/Energiteknik

    Författare :Daniel Frisk; Deniz Pektas; [2018]
    Nyckelord :;

    Sammanfattning : Den här rapporten ämnar att ge en analys över energibehovet av ett mindre reningsverk samt hur utnyttjandet av den biogas som produceras vid reningen kan ökas. Energi-analysen kommer att inbegripa reningsverkets värme- och elbehov i nuläget samt hur hur det kan komma att utvecklas inom den närliggande framtiden. LÄS MER

  5. 4. Evaluation of sustainability criteria for small-scale wastewater treatment facilities

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

    Författare :Edvard Nordenskjöld; [2017]
    Nyckelord :On-site sewage facilities; phosphorus; micropollutants; multi-criteria analysis; precipitation; adsorption; full-scale; wastewater treatment; Enskilda avlopp; fosfor; mikroföroreningar; multi-kriterie analys; utfällning; adsorption; fullskala; avloppsrening;

    Sammanfattning : There are about 700,000 on-site sewage facilities (OSSFs) in Sweden, almost a quarter of which amount only to septic tanks for sludge collection and removal, with no form of post-treatment. All these OSSFs contribute about 10 % of the total anthropogenic phosphorus (P) load from Swedish coasts to the Baltic Sea. LÄS MER

  7. 5. Function of soil-based on-site wastewater treatment systems - Biological and chemical treatment capacity

    Master-uppsats, KTH/Mark- och vattenteknik

    Författare :Linnéa Tjernström; [2017]
    Nyckelord :;

    Sammanfattning : On-site wastewater treatment systems are among the main Swedish anthropogenic sources of nutrients causing euthropication of the Baltic Sea. Among on-site systems in Sweden almost half have septic tank treatment followed by a soil-based system, in which the wastewater is treated through soil filtration. LÄS MER