Essays about: "urea sanitation"

Showing result 6 - 10 of 13 essays containing the words urea sanitation.

  1. 6. Fate of pharmaceuticals and perfluoroalkyl substances during source separated wastewater treatment

    University essay from SLU/Dept. of Aquatic Sciences and Assessment

    Author : Alina Koch; [2015]
    Keywords : pharmaceuticals; PFASs; source separated systems; blackwater; latrine; anaerobic degradation; urea sanitation; fate;

    Abstract : In the past decade, water reuse and nutrient recycling of wastewater has gained more attention as sustainable water cycle management solutions, driven by the increasingly noticeable resource restrictions of the 21st century. One of these possible solutions is source separated treatment of latrine or blackwater for nutrient recovery. READ MORE

  3. 7. Optimised ammonia sanitation of sewage sludge

    University essay from SLU/Dept. of Energy and Technology

    Author : Franziska Häfner; [2014]
    Keywords : ammonia; urea; sanitisation; compost; sewage; sludge; Enterococcus faecalis; Escherichia coli; Salmonella Typhimurium; Ascaris suum; somatic coliphages;

    Abstract : The usage of sewage sludge as an organic fertiliser offers a way to recycle nutrients and organic matter for a sustainable agriculture. Sewage sludge is rich in plant nutrient like nitrogen, phosphorus, potassium and micronutrients. READ MORE

  4. 8. Blackwater sanitization with urea in Sweden : sanitization effect and environmental impact

    University essay from SLU/Dept. of Energy and Technology

    Author : Brenda Vidal Estévez; [2014]
    Keywords : blackwater; ecological sanitation; fertilizers; urea treatment; system assessment;

    Abstract : The increasing global population is placing pressure on the water resources and nutrients needed for food production, while increasing the amount of waste generated and the environmental contamination. Technical solutions and changes in the social perception of the environmental problems are needed to address these problems. READ MORE

  5. 9. Optimerad hygienisering vid kompostering av avloppsslam

    University essay from SLU/Dept. of Energy and Technology

    Author : Linda Dunder; [2013]
    Keywords : Avloppsslam; Kompostering; Hygienisering; Kretslopp; Näringsåterföring; Patogener; Urea; Ammoniak; Sewage sludge; Composting; Sanitation; Nutrients; Recycling; Pathogens; Ammonia;

    Abstract : The aim of this study was to in laboratory experiments investigate how addition of urea, ECOX and structural materials can optimize sanitization during composting of sewage sludge. Today we strive for a sustainable society and the importance of closing the nutrient loop increases. READ MORE

  6. 10. Urine drying with ash and lime at temperatures 20-60°C : nutrient recovery from source separated urine

    University essay from SLU/Dept. of Energy and Technology

    Author : Shanta Dutta; [2012]
    Keywords : Urine; drying; evaporation; treatment; ammonia; ammoniumnitrogen; nutrient; recycling; recovery; urea hydrolysis; fertilizer; ecological sanitation; eco-san; agriculture;

    Abstract : Utilization of source-separated urine in agricultural production has been practiced and different treatment options have been developed in last two decades. The purpose of this study was to develop a drying technique for untreated human urine added to ash and lime as drying agent at temperature 20-60°C. READ MORE