Solid Waste Engineering
3rd Edition
ISBN: 9781305888357
Author: Worrell
Publisher: Cengage
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Chapter 2, Problem 2.9P
To determine
The time required to fill up the smith center.
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- Briefly describe how the moisture content of waste is determined.arrow_forwardThe City of Forty-Five (population 465,565) has requested your assistance in evaluating its solid waste collection system. Determine the mean time per collection stop plus the mean time to reach the next stop, the number of pickup locations per load, and the minimum number of trucks the city must own. The City of Forty-Five collection data are as follows: Average truck capacity = 12.5 m3; Average observed compaction ratio = 2.87 Crew size = 2; Number of pickups = 1 /wk (no rear-of-house service) Average number of cans per stop = 2.63/wk at 0.1136 m3/can Average number of residents per stop = 5 Average uncompacted density = 105.76 kg/m3 Average transport time to disposal site including delays and dumping = 1.78 h/trip Average number of trips to disposal site = 2/d; Rest breaks = 2 at 28.0 min Average maintenance downtime = 37.0 min/d; Average workday = 8.00 h Average percent of trucks out of service for major repairs = 15.0% Number of workday per week = 5arrow_forwardAccording to the Worrell and associates, the bulk density of refuse compacted in a landfill without cover ranges from__. lb/yd³. 600 to 900 750-1250 150 to 250 1200 to 1400arrow_forward
- Describe the features of Municipal solid waste.arrow_forward1. A certain material having a specific gravity of 3.52 in a 250 mL beaker was found to have weigh 484 g. What is the porosity of the material? a. 0.68 b. 0.38 c. 0.45 d. 0.29 2. The width of an apron conveyer with a capacity of 75 tons/hr and speed of 50 A. 220 mm B. 370 mm C. 070 mm D. 460 mm 3. The diffusivity of water in air at 10 deg. F and 1 atm in cm2/sec is A. 0.256 B. 0.273 C. 0.404 D. 0.581arrow_forwardQ2 bHow can you determine chloride content in a waste water sample?arrow_forward
- What is the difference between advection and diffusion? In what circumstances might diffusion become a significant, if not dominating, leakage channel in a landfill? Simple computations and drawings might be used to illustrate your point.arrow_forwardA yard waste composting windrow has a triangular cross section and is 10 feet wide at the base and 10 feet high at the peak and 100 feet long. You may assume the waste has a specific weight of 400 Ib/yd^3 as placed in the windrow. The waste material is 40-percent biodegradable and has the ultimate composition of C60H95040N. Determine the amount of oxygen required to stabilize the waste (show all work for full credit). Assume the aerobic degradation can be expressed as: (4a + b - 2с + За 02 b - 3d aco, + ("). H20 + dNH3 CaH¿0̟Na + 4 2arrow_forwardDetermine the volume of a 200-foot by 175-foot concrete slab. The slab is 5 inches thick. Express the answer in cubic yards and include 10% waste.arrow_forward
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