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Situation: The town of Waterville has the following past population data projected beyond 1990 Year Population...


Situation: The town of Waterville has the following past population data projected beyond 1990 Year Population 10,240 12,150 18,430 26210 22,480 32.410 45,050 57,200 64,030 77,320 1900 1910 1920 1930 1940 1950 1960 1970 1980 1990 The average water consumption (including every possible sector) is 160 gal/cap-day in 1998. The town has a wastewater treatment plant with a treatment capacity of 30 MGD. Due to the rapid growth of the population, the town is planning to build a new wastewater treatment plant Requirements: You are hired by the town as an engineer to do the planning. You need to (1) estimate the future populations using any reasonable method; (2) estimate the future wastewater generation rate (e.g., in the units of gal/cap-day); (3) estimate the initial year and design year of the new wastewater treatment plant; (4) the average and peak hourly flow rates for the initial and design year under both dry and wet weather conditions; (5) assume that the wastewater generated by the town is of medium strength, estimate the BODs, COD, SS, VSS in the raw wastewater to be treated by the new treatment plan.
Situation: The town of Waterville has the following past population data projected beyond 1990 Year Population 10,240 12,150 18,430 26210 22,480 32.410 45,050 57,200 64,030 77,320 1900 1910 1920 1930 1940 1950 1960 1970 1980 1990 The average water consumption (including every possible sector) is 160 gal/cap-day in 1998. The town has a wastewater treatment plant with a treatment capacity of 30 MGD. Due to the rapid growth of the population, the town is planning to build a new wastewater treatment plant Requirements: You are hired by the town as an engineer to do the planning. You need to (1) estimate the future populations using any reasonable method; (2) estimate the future wastewater generation rate (e.g., in the units of gal/cap-day); (3) estimate the initial year and design year of the new wastewater treatment plant; (4) the average and peak hourly flow rates for the initial and design year under both dry and wet weather conditions; (5) assume that the wastewater generated by the town is of medium strength, estimate the BODs, COD, SS, VSS in the raw wastewater to be treated by the new treatment plan.
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Solution Yeast Increment 1900 10 9 20 19 30 19 HO 1950 1960 9-10 986 ga o 10, 210 /2, 150 18430 26, 210 22, 480 32,40 45,050 S, 20o 6y, 030 11, 320 19 16 628 0 180 3180 30 12-6 HO 12150 , 6830 13290 ppilakon forecast,6 yec。in 셔8 in Popula tion afton n decades peson populalion no、of decades 1998-1990 113 20 t 0.8% 828 2 0 94883, 945.2) future coaste coter gual? GoX 83945 13 4312x 0b om 5 to lo The ulimate des priod, shou ld be a0yea? on the cede eCommodali

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