Solid Waste Engineering
3rd Edition
ISBN: 9781305635203
Author: Worrell, William A.
Publisher: Cengage Learning,
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Chapter 2, Problem 2.3P
To determine
The maximum compaction attainable in the landfill.
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A sanitary landfill is being designed to handle solid waste generated by the town of Pietro, at a rate of 40 Mg/day. It is expected that the waste will be delivered by compactor truck on a 5 days/week basis. The density as spread is 129 kg/m3. It will be spread in 0.8 meter layers and compacted to 0.3 meters. Assuming 2 such lifts per day and a daily cover of 0.13 meters, box your answer
the annual volume of landfill consumed in cubic meters. Ignore the soil volume between the stacks. Answer in two decimal value.Also In your solution Compute also the daily horizontal area covered by the solid waste.
1. A sanitary landfill has available space of 16.2 ha at an average depth of 10 m. Seven hundred sixty-five (765) cubic meters of solid waste are dumped at the site 5 days per week. This waste is compacted to twice its delivered density. Draw a mass balance diagram and estimate the expected life of the landfill in years.
A sanitary landfill has available space of 16.2 hectares at an average depth of 10 m. 765 m3 of solid waste are dumped daily at the landfill 5 days per week. This waste is compacted to twice its delivered density. Draw a mass balance diagram and estimate the expected life of the landfill in years.
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- Determine the area (m2) required for a new landfill site with a projected life of 10 years for a population of 100,000 generating 2.00 kg/capita-day. The density of the compacted waste is 400 kg/m3. The height of the landfill cannot exceed 10 meters.arrow_forwardA landfill that is 12 ha in area has a liner of thickness 0.9 m. Each year 1700 m3 of leachate is collected. The hydraulic conductivity ofthe liner is 3.9 × 10-10 m · s-1. What is the head of water above the liner? Select one: a. 2 m b. 3 m c. 1 m d. 4 marrow_forwardA leachate collection system is being designed for a 10 acre landfill. If the drainage rate through the waste to be collected in the perforated pipe is 1.5 inches/day, determine the expected leachate from the landfill in ft3 /s.arrow_forward
- Estimate the theoretical production of landfill gas (CH4 only) from the degradation of 20.3 kg of rapidly decomposable MSW. Assume the density of methane is 0.7177 kg/m3. Note:Hand written solution should not be used.arrow_forwardEstimate the area and volume of landfill to handle the solid waste from Warriorville for20 years. Based on a 10 yd sample of waste collected from an existing landfill during normal off‐loadingoperations. Assume the following:1. Population of 14,5662. Average solid waste generation rate of 2.42 lbs cap‐1 d‐13. Average uncompacted density of 9.03 lbs ft34. cell height of 8 ft 5. recommended depths of cover will be used6. normal compaction7. characterization of Warriorville solid waste based on a based on a 10yd dumpster sample isdescribed belowWaste Composition Mass (lbs)Food waste 56.5Paper and Cardboard 120.8Plastic 10.1Rubber, leather, wood 26.7Textiles 23.1Metals (90% Ferrous) 45.2Glass 30.6Miscellaneous 54.5arrow_forwardDaily cells for a landfill are operated so that the following conditions are maintained: thickness of daily cover= 0.2 m; slope (horizontal:vertical)= 3:1, working face for refuse= 30 m; height of refuse= 3 m; and volume of daily refuse= 1,800 m^3/day. The landfill is interested in reducing requirements for daily cover soil over its 20 year life and is considering three options (that is, have a lower Vs/Vr). Which option should be the best? Why? Option 1: Increase height of refuse to 4 m. Option 2: Increase daily refuse volume to 2000 m3/day. Option 3: Decrease working face to 20 m.arrow_forward
- At a landfill site, leachate accumulated over a clay liner contains a chlorite concentration of 1,000 mg/L. What would be the chlorite concentration at a depth of 3 m after 100 years of molecular diffusion? Given: D*=1.015 x 10-9 m2/sarrow_forward3. A MSW facility is designed to handle solid waste generated by a town at a rate of 75,000 kg/d. The waste is delivered by compactor truck 4 days/week, and 30% of the waste is recycled. The density of the disposed waste before compaction is 120 kg/m3. The waste is compressed to a compaction ratio of 4.0. Daily cover takes up 20% of the total landfill cell volume, and a single lift is 3.5 m high. Engineers have designed the landfill for two lifts, and a total of 6.0 hectares are available for this MSW landfill. Calculate how long (in years) it will take to fill up this landfill as designed.arrow_forwardHow many cubic yard of solid waste can be placed on a regulation soccer field (200 ft × 300 ft) subject to the following constraints and conditions? Slope of all landfill faces = 3 to 1 Covered material will be excavated from the site Neglect cover material requirements Lift height = 10 ft Maximum height of landfill = 20 ft Waste generation rate = 4.1 lb/capita day Community population = 80,000 How many soccer fields would be required per year to dispose of the waste from the community, assuming the in-place specific weight of the waste is 1,000 lb/yd3?arrow_forward
- A municipality with a population of 120,000 is under state mandate to recycle 20% of the solid waste generated by its citizens. The remaining 80% will be landfilled. The per capita waste generation rate is 2.2 kg/day. The landfilled waste in-place maximum compacted density is 820 kg/m3, and the soil-cover-to-compacted-waste ratio is 1:4 by volume. The landfill covers a rectangular area 400 m by 500 m. The maximum landfill height cannot exceed 25 m with 1:1 side slopes. What is the operating life of the landfill?arrow_forwardEstimate the life of a landfill for a user population of 10,000. The available area for the are-type landfill is 10 acres. The water table is estimated at 6.1m(20ft) below the ground surface. The pit must have side slope of 1:3 and the final surface must have a slope of 1:4. Assume that soil (used as daily cover) occupies 20% of the compacted volume of wastearrow_forward(a) In the town of Abesim, it is determined that the per capita waste generation rate is 1.4 kg (3.1 lb) per person per day. The collection is conducted once per week by the municipality. If the density of MSW in a typical trash container is 150 kg/m3, how many 120 L (30 gal) containers would be needed for a family of four? (b) From (a), collection trucks have a capacity of 11.5 m3 (15 yd3), which can compact the waste to a density of 420 kg/m3. How many customers can a truck handle in a single run, before departing for the transfer station?arrow_forward
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ISBN:9781305635203
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