A certain city has a population equivalent to 123456 treatment plant which will serve the community...

A certain city has a population equivalent to 123456 treatment plant which will serve the community until 2040

. a) Estimate the future population of this city in 2020 and 2040 using constant percent method if the rate constant is 0.0327 /year.

b) Determine the water and wastewater treatment plant design capacities for the period of 2020 to 2040. Use maximum (fmax) and minimum (fmin) factors of 2 and 0.5, respectively (Qmax = fmax Qavg and Qmin = fmin Qavg). Assume an average of 200 L/capita-day is the water consumption rate for the city in 2010 and 80% of the consumed water is collected as wastewater. What is the maximum hourly flow?

c) Determine the daily fire protection water requirement in 2020 and 2040?

d) Estimate the size of a tank for the water treatment plant that can store the raw water for 7 day. Take the depth as 3 m. What would be removal percentages of viruses (diameter = 50 nm) and bacteria (diameter = 1 μm) by this tank? Assume the specific gravity of each micro-organism is 1.05 and the water temperature is 20°

e) Estimate the size of equalization tank for the wastewater treatment plant that can hold the raw sewage for 4 hours. Take the depth as 3 m. What would be the size of the smallest particle size with specific gravity 2.0 that can be 100% removed by this tank? Assume that the water temperature is 20°C

Expert Solution

Ally Wells answered 1 year ago

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