18-Env-B5 Industrial & Hazardous Waste Management · May 2016
Nivaar worked solution (AI-drafted; not reviewed by a licensed engineer)
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; Basel Convention on the Control of Transboundary Movements of Hazardous Wastes (1989); Canadian Nuclear Safety Commission (CNSC) regulations on radioactive waste; provincial hazardous waste regulations (e.g. BC's Environmental Management Act and Hazardous Waste Regulation).
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.
| Sector | Example source | Associated hazardous waste |
|---|---|---|
| Commerce | Dry-cleaning establishment | Spent chlorinated solvent (perchloroethylene, PCE) still-bottom residue |
| Agriculture | Pesticide/herbicide mixing and rinsing operation | Empty-container rinsate and unused/expired organochlorine or organophosphate pesticide concentrate |
| Small-scale industry | Automotive repair/electroplating job shop | Spent solvent degreasers and metal-plating rinse-bath sludge (chromium, nickel, cadmium) |
| Large-scale industry | Petroleum refinery | Oily API-separator sludge, spent catalysts and tank-bottom residues |
