Situation: The town of Waterville has the following past population data projected beyond 1990. Year 1900 1910 1920 1930 1940 ...
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Civil Engineering
Situation: The town of Waterville has thefollowing past population data projected beyond 1990.
Year 1900 1910 1920 1930 1940 1950 1960 1970 1980 1990
Population 10,240 12,15018,430 26210 22,480 32.410 45,050 57,200 64,030 77,320
The average water consumption (including every possible sector)is 160 gal/cap-day in 2005. The town has a wastewater treatmentplant (WWTP) with a treatment capacity of 20 MGD. Due to the rapidgrowth of the population, the town is planning to build a new WWTPassuming that the old WWTP will not be used anymore after the new WWTP is operating.
Requirements: You are hired by the town as anengineer to do the planning. You need to (1) estimate the futurepopulations using any reasonable method; (2) estimate the futurewastewater generation rate (e.g., in the units of gal/cap-day); (3)estimate the initial year and design year of the new WWTP; (4) theaverage, maximum, and minimum daily and hourly flow rates for theinitial and design year under both dry and wet weather conditions;(5) assume that the wastewater generated by the town is of mediumstrength, estimate the BOD5, COD, SS, VSS, TKN, Total P,and alkalinity (as CaCO3) in the raw wastewater to betreated by the new treatment plan.
Situation: The town of Waterville has thefollowing past population data projected beyond 1990.
Year 1900 1910 1920 1930 1940 1950 1960 1970 1980 1990
Population 10,240 12,15018,430 26210 22,480 32.410 45,050 57,200 64,030 77,320
The average water consumption (including every possible sector)is 160 gal/cap-day in 2005. The town has a wastewater treatmentplant (WWTP) with a treatment capacity of 20 MGD. Due to the rapidgrowth of the population, the town is planning to build a new WWTPassuming that the old WWTP will not be used anymore after the new WWTP is operating.
Requirements: You are hired by the town as anengineer to do the planning. You need to (1) estimate the futurepopulations using any reasonable method; (2) estimate the futurewastewater generation rate (e.g., in the units of gal/cap-day); (3)estimate the initial year and design year of the new WWTP; (4) theaverage, maximum, and minimum daily and hourly flow rates for theinitial and design year under both dry and wet weather conditions;(5) assume that the wastewater generated by the town is of mediumstrength, estimate the BOD5, COD, SS, VSS, TKN, Total P,and alkalinity (as CaCO3) in the raw wastewater to betreated by the new treatment plan.
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