A landfill is to be designed to serve a population of 200000 for a period of 25 years. The solid waste generation is 2kg/person/day. The density of the uncompacted SW is 100 kg/ m³ and a compaction ratio of 0.4 is suggested.

A landfill is to be designed to serve a population of 200000 for a period of 25 years. The solid waste generation is 2kg/person/day. The density of the uncompacted SW is 100 kg/ m³ and a compaction ratio of 0.4 is suggested.

Solid Waste Engineering

3rd Edition

ISBN:9781305635203

Author:Worrell, William A.

Publisher:Worrell, William A.

Chapter8: Landfills

Section: Chapter Questions

Problem 8.2P

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Daily 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.
10.5. Estimate the thickness of a clay layer that would be required to limit the flow of leachate from the bottom of a landfill to a value of 1.0 mm/d. Assume the hydraulic conductivity of the clay material is 5 x 10-8 m/s and that the surface of the groundwater is 0.68 m below the surface of the leachate collected in the bottom of the landfill.
5. Landfill Leachate Management A pre-RCRA landfill was lined with 6 ft of clay at the bottom. The cover of the landfill consists of 4 ft of clay. During a recent survey, it was found that the cover was at 60% of its maximum storage capacity. An unusual wet season experienced by the region raises concern about leachate production in the landfill. The weather data of last month (Feb) is as follows: Precipitation, P = 12.2 in %D Evapotranspiration, ET = 3.6 in Runoff coefficient of clay, R = 0.20 Field capacity, FC = 0.35 PWP = 0.20 a) Determine the amount of percolation through the cover in the month of Feb and the final storage capacity of the cover at the end of Feb. (Hint: PER = (P – R - ET) – ASLC) b) Contingency plan requires the landfill engineer to estimate the breakthrough time should leachate is produced at the bottom of the landfill. Estimate the breakthrough time in years, assuming porosity of the clay, a, is 0.20. Hydraulic conductivity, K, is 1.5 x 1010 ft/s, and the…
10.4. Estimate the maximum flow of leachate from the bottom of a landfill lined with a 0.2 m thick clay layer. Assume the groundwater table is coincident with the bottom of the clay layer and that the depth of leachate in the landfill is 0.5 m above the clay layer. The hydraulic conductivity of the clay material is 5.0 × 10-8 m/s.
Design of Sanitary Landfill
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.
Determine the area required for a new landfill site with a projected life span of 35 years, for a population of 200,000 generating 2.02 kg /capita/day. The density of the compacted waste is 470kg/m³. The height of the landfill cannot exceed 16 m.
Example 10.6 Find the amount of land required in a sanitary landfill to dispose of urban waste of city of 120 000 in population, knowing that Amount of waste generation = 2.2 kg/capita/d Density of solid waste as discarded= 200 Kg/m3 Compaction factor in landfill = 0.3 Refuse is filled into a depth of about 4 m. The landfill site is to be used for 5 years including 25% for other services (access roads, storages...etc
a landfill contains leachate with a chloride concentration of 2135mg/l. the landfill has a clay liner that is 2m thick and has a tortuosity coefficient of 0.5. the diffusion coefficient for chloride is 2.3×10-⁹. after 50years what would be the chloride concentration just outside of the clay liner? assume theres no ground water gradient across the liner
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.
Problem-52, Disposal & Design of Sewage System (Civil) A landfill is to be designed for the population of 2,00,000. The solid waste generation is 1 kg/person/day. The density of uncompacted fill is 100 kg/m3. The compaction ratio is 3 and volume of landfill is 0.020 km3. The ratio of cover to compacted fill is 0.4. Calculate the number of years this landfill can be used.