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18-Env-B5 Industrial & Hazardous Waste Management · May 2017

Question 12 of 19: Biggest Challenges in Managing Biomedical Waste

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

Notes on this paper

Reference texts: Nemerow & Dasgupta, Industrial and Hazardous Waste Treatment, 2nd ed.; Metcalf & Eddy, Wastewater Engineering: Treatment and Resource Recovery, 5th ed.; Davis & Cornwell, Introduction to Environmental Engineering, 6th ed.; LaGrega, Buckingham & Evans, Hazardous Waste Management, 2nd ed.; CCME, Guidelines for the Management of Biomedical Waste in Canada (1992); Canadian Environmental Protection Act (CEPA), 1999; Canadian Nuclear Safety Commission (CNSC) regulations on radioactive waste under the Nuclear Safety and Control Act; provincial hazardous waste regulations (e.g. BC's Environmental Management Act and Hazardous Waste Regulation).

Question 12: Biggest Challenges in Managing Biomedical Waste (6 marks)

Question text not reproduced: the examination questions are © Engineers and Geoscientists BC. Open the official past paper (linked at the top of this page) to read the question, then follow the worked solution below.

Biomedical waste management challenges arise at every stage from generation to final disposal, and several are structural rather than purely technical:

  1. Segregation compliance at the point of generation. Correct sorting into the recognized categories depends on consistent staff behaviour under time pressure in clinical settings; mixing biomedical waste with general waste is the single most common failure point.
  2. Handling and transportation risk. Sharps injuries and infectious exposure during collection, on-site storage, and off-site transport remain a genuine occupational and public-health hazard.
  3. Treatment capacity and access. Not every facility, especially smaller or rural ones, has convenient access to an autoclave or incinerator, creating pressure to store waste longer than recommended or to under-treat it.
  4. Regulatory fragmentation. The national CCME guideline is non-binding; actual enforceable regulation is set provincially, creating inconsistency in requirements across jurisdictions for facilities that operate in more than one province.
  5. Cost pressure versus proper treatment. Proper treatment and licensed disposal is materially more expensive than treating biomedical waste as general waste, creating an economic incentive for non-compliance that regulation and enforcement must counteract.
  6. Chain-of-custody and tracking. Maintaining an auditable manifest from generation through treatment to final disposal, so waste cannot be diverted or under-reported, is administratively demanding at high-volume facilities.
  7. Public acceptance of treatment/disposal siting. Siting new autoclave, incineration or landfill capacity often faces community opposition (NIMBY), constraining where adequate treatment capacity can actually be built.