CE 453 Homework 1 Due: September 2, 2009 1. Problem 2-3 in the textbook. 2. Problem 2-9 in the textbook. 3. A biologically-treated wastewater from town “A” is discharged into a river. A car manufacturing company located 5 miles downstream is discharging its wastewater containing toxic metals into the river. Town “B” is located 15 miles downstream of the car company and uses the river water for drinking purposes. (a) Discuss the mechanism(s) by which the river cleans itself. (b) What would happen in the river water if the car company doesn’t treat its wastewater before discharging it into the river?
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