Question
Asked Sep 28, 2019

A landfill receives 10000tons/day of waste. This receipt rate increases  10% per year. The landfill is closed at the end of the fourth year. Using the exponential model calculate the yearly gas production for 20 years after opening. What is the peak peak gas production in m3/yr.

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Step 1

Consider landfill emission constant as 0.305 per year.

Consider generation potential as 100 m3/tonne.

Step 2

Find the mass of wet waste per year for year 1 using the relation;

M (10,000tonnes/day) 365 days
1 year
10,000x 365 tonnes/day
=3,650,000 tonnes/day
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M (10,000tonnes/day) 365 days 1 year 10,000x 365 tonnes/day =3,650,000 tonnes/day

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Step 3

Calculate the mass of wet waste per year for year 2, 3, and 4 by adding 10 % increment of receipt rate.

Similarly, calculate and...

Year Mass of wet waste per year (tons)
3,650,000
4,015,000
4,416,500
4,858,150
1
2
3
4
Sum
16,939,650
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Year Mass of wet waste per year (tons) 3,650,000 4,015,000 4,416,500 4,858,150 1 2 3 4 Sum 16,939,650

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