16-Civ-A3 Elementary Environmental Engineering: December 2016

Paper format. National Exams, December 2016 — 98-Civ-A3 Environmental Engineering. Three hours; closed book with one candidate-prepared 8 × 11 double-sided aid sheet; approved Casio or Sharp calculator only. Seven problems are printed, each worth 20 marks, and any five constitute a complete paper (maximum 100 marks). All seven are solved here, because the set is intended as a study resource rather than an exam script. Section marks are shown in brackets at the left margin of each question and are reproduced below.

Reference texts.

• Davis, M.L. & Cornwell, D.A., Introduction to Environmental Engineering, 5th ed., McGraw-Hill — mass balances, reactor kinetics, hardness, water and wastewater unit processes.
• Mihelcic, J.R. & Zimmerman, J.B., Environmental Engineering: Fundamentals, Sustainability, Design, 3rd ed., Wiley — sustainability, life-cycle thinking, growth and pollution linkages, professional ethics.
• Metcalf & Eddy / AECOM, Wastewater Engineering: Treatment and Resource Recovery, 5th ed., McGraw-Hill — activated sludge variants, disinfection, effluent reuse.
• Crittenden, J.C. et al. (MWH), Water Treatment: Principles and Design, 3rd ed., Wiley — sedimentation, filtration, oxidation, adsorption.
• Health Canada, Guidelines for Canadian Drinking Water Quality (GCDWQ); CCME, Canadian Environmental Quality Guidelines; Impact Assessment Agency of Canada, Impact Assessment Act (S.C. 2019, c. 28) practitioner guidance.

Question 1: Material Balance, Reaction Kinetics and Microbiology (20 marks)