A sanitary landfill with a surface area of 6000 m2 receives a yearly rainfall amount of 300 mm. About 20 percent of this precipitation is runoff and does not infiltrate the surface. A leachate collection system, which is installed underneath the landfill, is 90 percent effective at collecting and treating any water that infiltrates the surface of the landfill. Assuming consistent yearly rainfall amounts, what is the volume of leachate, in m3, that the landfill will be able to treat per year? *

An area where waste material and garbage's are buried in the soil layers and covered with soil for disposing of wastes is called a landfill.

The 1296 of volume is required for treating the landfill.

The volume can be estimated as:

Given,

Then,

Volume (v) of water that falls on the landfill:

v = Area x depth of water

20% of this precipitate is runoff:

Total volume = V

Effective amount of treatment = 90% of 1440

Therefore, 1296 is the volume.

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1296 of water

Explanation:

Area of landfill is 6000

Rain fall depth is 300 mm = 300 x m

volume of water that fall on the landfill is area x depth of water

v = 6000 x 300 x = 1800 of water

20% of this precipitate is runoff i.e 0.2 x 1800 = 360

total volume that infiltrates is 1800 - 360 = 1440

the leachate treatment is 90% effective in treating infiltrates, i.e 90% of 1440 = 0.9 x 1440 = 1296 of water water is treated yearly