1. The document is an exam for an environmental engineering course consisting of 3 questions testing knowledge of wastewater treatment processes and calculations. 

2. The first question defines and explains several key terms related to wastewater treatment. The second question requires explaining concepts like the water cycle and biological nutrient removal as well as solving design problems. 

3. The third question involves calculations for a municipal wastewater treatment plant based on design parameters like population served, BOD removal efficiency, and sludge treatment unit specifications. It requires determining influent BOD concentration, sizing primary sedimentation tanks, aeration tanks, and final sedimentation tanks.

الله الرحمن الرحيم مسب College of Engineering: Final-Exam Environmental Engineering Theoretical Exam PDF

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