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proposal

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  • 1. LAGOONING OF WASTEWATER
    A Casestudy in Phuentsholing
    TsheringChoden
    WangmoGhalley
    TshunduRabgay
    Yoesel Dorji
    Project mentor : Director Dr. ChekiDorji
  • 2. OUTLINE
  • BACKGROUND
    Types of wastewater treatment technologies:
    Chemical treatment:
    • Causes environmental pollution
    • 8. Requires more energy and uneconomical
    2. Natural/Biological treatment:
    • Terrestrial system
    • 9. Wetland system
    • 10. Aquatic system: Lagoon system
    • Lagoon system:
    • 11. Lagoon systems are cost effective to design, construct, operate and maintain.
    • 12. Effectively remove pollutants and pathogens promoting hygiene in the area.
  • LITERATURE REVIEW
    • Hobson, John,U.K., Good Practice Guidance and Uncertainty Management in National Greenhouse Gas Inventories ;CH₄ and N₂O emission from wastewater handling
    • 13. Methods for monitoring and estimating methane emissions from sludge treatment.
    • 14. Hotter climates: anaerobic processes are more likely to be employed.
  • A Natural Wastewater Treatment Program, Carolina Bays(1993)
    • Design of a soil filter treatment plant(wetland) with the innovative use of willows and poplars instead of reeds as vegetation and a composter for the direct composting of solids.
    William J. Oswald, Advance integrated wastewater pond system
    • Proper design of treatment plant to eliminate sludge and lower the power-use incorporating methane fermentation and photosynthetic oxygenation.
  • OBJECTIVES
    • To design a community based Lagoon system that can provide low cost sanitation and environmental protection.
    • 15. To determine the quality of wastewater.
    • 16. To determine the discharge of wastewater of CST.
    • 17. To determine the bearing capacity of the designated site.
  • METHODOLOGY
    SITE SELECTION
    • BEARING CAPACITY OF SOIL
    • 18. PERMEABILITY TEST
    CHARACTERIZATION OF WASTEWATER
    • DETERMINATION OF SEWAGE DISCHARGE
    • 19. POPULATION SURVEY
    DETERMINATION OF DESIGN LIMITS
    DESIGN OF TREATMENT PLANT
    • LAGOON PONDS
    • 20. SLUDGE DISPOSAL AREA
    • 21. DRAINAGE SYSTEM
    • 22. ECOLOGICAL POND
    PLANT TREATMENT ESTIMATION
  • 23. EXPECTED OUTCOMES
    • Design a lagoon treatment plant that generates no offensive smells, and have minimum effect on environment.
    • 24. Application of theoretical knowledge.
    • 25. Determine the characteristics of waste water in the CST campus.
  • WORK PLAN
  • 26. THANK YOU!!

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