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23-Chem-B2 Environmental Engineering: May 2013

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

  1. Question 1 Phosphorus removal, BOD test analysis, and dissolved air flotation
  2. Question 2 Soil remediation and effluent-monitoring statistics
  3. Question 3 Particulate air control, ammonia toxicity, and buffer strips
  4. Question 4 Fabric filters, absorption, and catalytic reactors for particulates, gases and vapours
  5. Question 5 Gaussian plume dispersion of a power-plant SO₂ stack
  6. Question 6 Photochemical smog, halogenated-hydrocarbon control, and odour control
  7. Question 7 pH control / ion exchange / RO design principles, and activated sludge process design

Start with Question 1 →

Paper format. EGBC 04-Chem-B2 Environmental Engineering, May 2013, 3 hours, closed-book with a candidate-prepared double-sided 8½×11-inch aid sheet. Seven problems, each worth 20 marks; candidates attempt any five, and only the first five answers in the workbook are marked. All seven problems are solved below as a complete study resource.

Reference texts: G. Tchobanoglous, F. L. Burton & H. D. Stensel (Metcalf & Eddy), Wastewater Engineering: Treatment and Reuse (4th ed., McGraw-Hill) — BOD kinetics, dissolved air flotation, activated-sludge design, phosphorus removal; M. L. Davis & D. A. Cornwell, Introduction to Environmental Engineering (5th ed., McGraw-Hill) — air pollution control, ion exchange, reverse osmosis, soil remediation; L. Theodore & A. J. Buonicore / C. D. Cooper & F. C. Alley, Air Pollution Control: A Design Approach — fabric filtration, absorption, catalytic oxidation, odour control; S. P. Turner, Workbook of Atmospheric Dispersion Estimates (2nd ed., CRC Press) — the Gaussian plume model and Pasquill–Gifford stability classes. Canadian context follows the Canadian Environmental Protection Act (CEPA 1999), the Canadian Council of Ministers of the Environment (CCME) Municipal Wastewater Effluent guidelines, and provincial air/water permitting practice (e.g. BC Environmental Management Act and Metro Vancouver air-quality bylaws), which govern effluent/emission limits, monitoring frequency, and buffer-strip / best-management-practice programs referenced throughout.