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A landfill initially received 10,000 tons/day of waste. This receipt rate increases 10% per year. The landfill is closed at the end of the fourth year. Calculate the yearly gas production for 20 years after opening. What is the peak gas production in m3/yr.

Question
  1. A landfill initially received 10,000 tons/day of waste. This receipt rate increases 10% per year. The landfill is closed at the end of the fourth year. Calculate the yearly gas production for 20 years after opening. What is the peak gas production in m3/yr.
check_circleAnswer
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 ra...

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

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