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18-Env-A6 Solid Waste Engineering and Management: May 2017

Nivaar worked solution (AI-drafted; not reviewed by a licensed engineer)

  1. Question 1 Considerations for Collection System Design
  2. Question 2 Leachate Treatment Processes
  3. Question 3 Strategy to Reduce Greenhouse Gas Emissions
  4. Question 4 Source Separation vs. MRF Separation
  5. Question 5 Sanitary Landfill Cross Section
  6. Question 6 Moisture Content and Density of MSW
  7. Question 7 Hazards of Methane in Landfill Gas
  8. Question 8 Strategy to Extend Landfill Life
  9. Question 9 Life-Cycle Analysis of a Composting Facility
  10. Question 10 Issues in Implementing a Composting Facility
  11. Question 11 Steps in Composting
  12. Question 12 Factors Limiting Vegetation Growth on Landfills
  13. Question 13 Variables Governing Landfill Gas Production
  14. Question 14 Energy Content of Refuse
  15. Question 15 Risk Analysis for a Landfill Project
  16. Question 16 Advantages and Disadvantages of Sanitary Landfills

Start with Question 1 →

National Examination, May 2017 — 04-Env-A6 / 18-Env-A6, Solid Waste Engineering and Management. 3 hours duration, closed book, non-communicating calculator permitted. All 16 questions constitute a complete paper (100 marks total).

Reference texts: Tchobanoglous, Theisen & Vigil, Integrated Solid Waste Management: Engineering Principles and Management Issues; Vesilind, Worrell & Reinhart, Solid Waste Engineering; Davis & Cornwell, Introduction to Environmental Engineering (6th ed.); CCME, Guidance Document on Landfill Gas Management; ISO 14040/14044, Environmental Management — Life Cycle Assessment.

Q6 below is solved from the six printed per-component rows, which are unambiguous exam-given data — see the callout at Q6 for the arithmetic. Table 2's "5.800 kJ/kg" organics value (period instead of comma) is read as 5,800 kJ/kg.