Solid Waste Engineering
3rd Edition
ISBN: 9781305635203
Author: Worrell, William A.
Publisher: Cengage Learning,
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Chapter 3, Problem 3.7P
To determine
Estimated time to collect recyclables
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Street is 1000 foot long and homes are 50 feet apart on both sides of the road. Two person crew are employed to collect the recyclables in green roll out containers. It takes 30 seconds to empty the contents to each green container into the truck and set out amount of 12 kgs . Estimate the total time to collect recyclables.
Calculate the number of stops in each trip of 1.50 h of refuse collection for the following data
v= velocity = 15 km/h – 4.17 m/s
d= distance= 750 m
n = number of containers to empty per stop=1
tc= time to empty one bin/container= 650 s
A filter plant has 3 filters, each measuring 10 x 7 ft. One filter is out of service, and the other filters together are capable of filtering 280 gal/min. How many gallons per square foot per minute for each filter?
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- A 5-liter bucket takes 30 seconds to fill from a spring source. If the average daily water consumption per person is 60 liters: A.) Determine the total daily water demand in liters/day of the community of 261 people B.) Determine the daily yield in liters/day C.) Determine if its daily yield is sufficient to the water demand of the community of 361 people. D.) Determine the rate of flow in liters/second. E.) Determine the number of people in the community so that its daily yield is exactly sufficient to the water demand. Only round off once in final answer. Round off to 4 decimals.arrow_forwardCalculate length of the pipe required to bring down the concentration of chlorine from 6x105 CFU/L to the permissible value of 2500 CFU/L. It is given that the velocity of flow through the pipe is 0.7 m/s and the rate constant is 0.25 per min.arrow_forwardAlthough gas station owners lock their tanks at night, a gas station owner was the victim of theft because his employee had a key to the tank. The owner of the gas station wants to bury the gasoline so deep that no vacuum pump will be able to extract it. He has hired a general contractor to dig the holes for the tanks. What is the minimum gasoline surface depth ℎ2 needed to prevent siphoning by any pump? Assume the specific gravity of gasoline is 0.733 and that the tank is not sealed. (You can ignore the drop rate of the gasoline level inside of the tank.) ℎ2= The gas station owner balks at the contractor's estimate. He neither has the funds nor approval from the city to dig that deeply. However, the contractor tels him that the best a thief could hope to have at his disposal is a 212‑mbar vacuum pump. Anything better would be enormously expensive. Given this information, how deep ℎ2 would the gasoline have to sit below the surface to keep it safe from thieves? ℎ2=arrow_forward
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Solid Waste EngineeringCivil EngineeringISBN:9781305635203Author:Worrell, William A.Publisher:Cengage Learning,
Solid Waste Engineering
Civil Engineering
ISBN:9781305635203
Author:Worrell, William A.
Publisher:Cengage Learning,