Essays about: "digested sludge"

Showing result 21 - 25 of 34 essays containing the words digested sludge.

1. 21. Greenhouse gas emission from drying and rewetting stored sewage sludge

   University essay from SLU/Dept. of Energy and Technology

   Author : Xi Yang; [2013]
   Keywords : Sevage; sludge; storage; methane; nitrous oxide; carbon dioxied; drying; rewetting;

   Abstract : Sludge produced from wastewater treatment plants is not only rich in nutrients such as nitrogen (N) and phosphorus (P), but also contains toxic organic contaminants and pathogenic organisms which can be potentially hazardous to health of plants, animals and humans. In order to minimize the pathogen contamination in sludge before land application, a minimum of one year of sewage sludge storage has been proposed by Swedish Environmental Protection Agency. READ MORE

3. 22. Use of Manganese Compounds and Microbial Fuel Cells in Wastewater Treatment.

   University essay from KTH/VA-teknik, Vatten, Avlopp och Avfall

   Author : Junli Jiang; [2011]
   Keywords : Digested Sludge; Manganese Compounds; Microbial Fuel Cell; Potassium Permanganate;

   Abstract : Manganese compounds have a high potential for treating wastewater, both for utilizing its oxidation, flocculation ability and catalyst ability in anaerobic nitrification. The promising use of manganese compounds (such as permanganate and manganese dioxide) is regarded as an effective method of treating organic compounds in wastewater from municipal and industrial wastewater. READ MORE

4. 23. Towards Sustainable Phosphorus Management : Material Flow Analysis of phosphorus in Gothenburg and ways to establish nutrient recycling by improving urban wastewater systems

   University essay from Institutionen för geovetenskaper

   Author : Helena Borgestedt; Ingela Svanäng; [2011]
   Keywords : phosphorus; phosphorus cycle; Material Flow Analysis; nutrient recycling; environmental quality objectives; wastewater system; sludge; ashes; fertilizers; Gothenburg; urine diversion; kitchen grinders; fosfor; fosforcykel; substansflödesanalys; näringsåtervinning; miljömål; avloppssystem; slam; aska; gödselmedel; Göteborg; urinsortering; köksavfallskvarnar;

   Abstract : All life forms require the nutrient phosphorus and it cannot be substituted by any other element. The global cycle of phosphorus is special among the major biogeochemical cycles, since it has no significant gaseous compounds and only closes every 10-100 million years. READ MORE

5. 24. Methane potential of sewage sludge to increase biogas production.

   University essay from KTH/VA-teknik, Vatten, Avlopp och Avfall

   Author : Lourdes Maria Rodriguez Chiang; [2011]
   Keywords : Anaerobic digestion; Methane potential; Biogas production; Sewage sludge; BMP;

   Abstract : Sewage sludge is treated with the biological process of anaerobic digestion in which organic material of a substrate is degraded by microorganisms in the absence of oxygen. The result of this degradation is biogas, a mixture mainly of methane and carbon dioxide. READ MORE

6. 25. Study on one-stage Partial Nitritation-Anammox process in Moving Bed Biofilm Reactors: a sustainable nitrogen removal.

   University essay from KTH/VA-teknik, Vatten, Avlopp och Avfall

   Author : Andrea Bertino; [2011]
   Keywords : Anammox Biofilm; Deammonification; CANON; Moving Bed Biofilm Reactor; Re-ject water;

   Abstract : In the last decade, several novel and cost-effective biological nitrogen removal technologies have been developed. The discovery of anaerobic ammonium oxidation (Anammox), about 15 years ago, has resulted in new opportunities for research and development of sustainable nitrogen removal systems. READ MORE