Solid Waste Engineering
3rd Edition
ISBN: 9781305635203
Author: Worrell, William A.
Publisher: Cengage Learning,
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Chapter 8, Problem 8.2P
To determine
The life of landfill for user population of
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Estimate 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 6.1 m (20 ft) 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 waste
Estimate 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 waste
State FOUR (4) factors to be considered in landfill design
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- List THREE (3) characteristics of sanitary landfill that differ from open dumping.arrow_forwardDemonstrate THREE (3) major differences between conventional landfill and sanitary landfill with the aid of diagram.arrow_forwardEstimate the life of a landfill (years) given a population of 250,000 people, 40 acre, a maximum depth of 50 feet below ground, a pit slope of 1:3 and final slope of 1:4. The coversoil occupies 22% of the compacted volume. There is a 42% diversion rate, the waste is compacted to 1,270 lb/yd3, the population is stable and generates 6.2 lb/capita/day. The landfill area is square and the max height of the landfill is 33 yd.arrow_forward
- Secure landfills require all but ONE of the following? a. Single liners b. Ground water monitoring C. Financial guarantees for post closure activities d. A Leachate collection systemarrow_forward5. 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…arrow_forwardAssume that a solute has a D* of 2.03 x 10-9 m2 / Sec and that w is equal to 0.5. If landfill leachate with a chloride concentration is next to a clay liner that is 2 m thick and the concentration of chloride is 2315 mg/L, what would be the chloride concentration at the outside of the liner after 50 years of diffusion. ? ignore any effects of advection. Defining a "release" from the landfill as a concentration exceeding 1 mg/l, how long will it take for a release to occur bt diffusion alone? Provide answer in years to the nearest tenth, Eg: 10.3arrow_forward
- Design of Sanitary Landfillarrow_forward10.5. 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.arrow_forwardAn MSW landfill has inactive cells covered with an intermediate cover of 1 m of sandy-loam soil. The soil is washed before use, thus it is at 100% field capacity when applied. The local 10-year average weather data is as follows. Month Precipitation ET in in Jan 7.8 3.1 Feb 7.1 3.4 Mar 6.0 4.4 Apr 3.3 5.1 May 1.1 6.3 Jun 1.1 7.0 Jul 1.1 7.4 Aug 1.5 6.9 Sep 4.0 5.8 Oct 5.0 4.8 Nov 5.5 3.6 Dec 7.0 3.0 Determine percolation (PER) through the intermediate cover in a 12-month starting from the month of July.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,