Fudgey
Master of Disaster
You know, I was thinking about some of the water and wastewater problems on the exam.
I think the questions could be a little less dry if they gave more backstory to them.
A city generates 10,000 gpd of municipal wastewater per day. On the day of the city chili cookoff however, a peaking factor of 3.1 is applied. 5,000 gpd of industrial discharges from a paint factory are also present. Bob at the plant loves to smell the paint.
Or, something like this...
Bill is the owner of a topless car wash. He doesn't mind hard customers, but the hard water is killing his equipment. Assume Misty and the girls can wash 8 cars per hour, and each washing uses 25 gallons of water. If the initial hardness of the water is 250 ppm as CaCO3, how much lime must be added per day to achieve a final hardness of 50 ppm as CaCO3? Lime is available for $49/1,000 lbs at 66% purity.
I just think it would make things more interesting, you know?
I think the questions could be a little less dry if they gave more backstory to them.
A city generates 10,000 gpd of municipal wastewater per day. On the day of the city chili cookoff however, a peaking factor of 3.1 is applied. 5,000 gpd of industrial discharges from a paint factory are also present. Bob at the plant loves to smell the paint.
Or, something like this...
Bill is the owner of a topless car wash. He doesn't mind hard customers, but the hard water is killing his equipment. Assume Misty and the girls can wash 8 cars per hour, and each washing uses 25 gallons of water. If the initial hardness of the water is 250 ppm as CaCO3, how much lime must be added per day to achieve a final hardness of 50 ppm as CaCO3? Lime is available for $49/1,000 lbs at 66% purity.
I just think it would make things more interesting, you know?
