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Investigating the Reduction of Sewage Sludge Volume in Kish slandRefineries with the Help of Mud Eating Worms

Heidari, Moosa | 2014

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 46224 (53)
  4. University: Sharif University of Technology, International Campus, Kish Island
  5. Department: Science and Engineering
  6. Advisor(s): Hashemian, Jamal
  7. Abstract:
  8. A major environmental challenge for wastewater treatment in Iran and other countries is the disposal of excess sludge produced during the biological process. This project has been developing and testing a technology that will help to overcome this challenge in Kish Island wastewater plant. Results demonstrate it can perform highly effective treatment of municipal wastewater while producing low levels of sludge.Applicationofvermifiltrationfor treatment of wastewater sludge using the Eiseniafetida earthworm species. The earthworms’ gut acted as a biofilter whereby there was reduction in the sewage wastewater’s solid and liquid organic and inorganic wastes through ingestion and expelling these as vermicompost. Earthworms’ body works as a ‘biofilter’and they have been found to remove The sewage sludge total dissolved solid (TDS) and total suspended solids (TSS) decreased by 75%and 91% respectively through vermifiltration. Vermifiltration significantly decreased the wastewater’s physicochemical parameters compared to an ordinary biofilter without earthworms’ presence. Vermifiltration technology can therefore be applied as an environmentally friendly technique for reduces
    wastewater’s physicochemical and microbiological parameters
  9. Keywords:
  10. Biofilter ; Kish Island ; Activated Sludge ; Waste Treatment ; Vermicomposting Process ; Vermicompost Worms ; Vermi Filtration Technology ; Earth Worm

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