Question

i need help on one last thing. it is...

Determine the area required for a new landfill site with a projected life of 30 years for a population of 250,000 generating 2.02 kg per person per day. The density of the compacted waste is 470 kg /m3. The height of the landfill is not to exceed 15 m. Assume the land fill will be a rectangular cube.

Answer 1

@campbell_st

Answer 2

well find the amount of waste over the 30 year period...for the population

divide it by the compaction factor...

this will give the volume needed for the waste

divide the volume by 15.... to get the area needed...

Answer 3

don't know what i'md oing sorry

Answer 4

ok... so how much waste does the population generate in a day...?

Answer 5

250000*30=7500000/470

Answer 6

250 000 * 30 = the population over 30 years

how much waste do they create per day

250 000 * 2.02

then how much per year

250 000 *2.02 *365

how much in 30 years

250000 *2.02*365*30 = total waste

now divide by the compaction factor to find the volume

Answer 7

i'm getting11765425.53?

Answer 8

is that the volume...?

if it is... divide by 15 to get the area.

Answer 9

I divided by 15 as that is the maximum height ... so you are actually finding the minimum area...

Answer 10

if i divide by 15 i get 368650000

Answer 11

well the volume is correct... but the area seems incorrect...

V = Area x height

so

Area = Volume/height

\[A = \frac{11765425.53}{15}\]

Answer 12

784361.702

Answer 13

thats what I got... so we may have both made the same mistakes... or its correct...

Answer 14

don't forget the area units in your answer

Answer 15

ok

Answer 16

thanks

Answer 17

glad to help