What I can do is sort of break it down for you as to the profit centers:
1. The gas itself, a commodity so we know the value there.
2. The effluent comes off in two streams:
a. Cellulose fiber. Separated and cleaned., it can be used for bedding for the animals and reduces sores and stressd, which in turn gives higher production along with eliminating bedding material costs. It can also be used for landscaping, fiberboard, or anything where cellulose fiber is used.
b. No nutrients are lost so the liquid can be applied as fertilizer. Being composted by the digester is it pH balanced, does not burn, run off, or smell. Result is a reduced fertilizer bill.
c. The water can be cleaned up and recycled, reducing the water bill.
3. The CO2 is separated out. That can be compressed and sold or fed to algae.
4. The sulfur is separated out and can be sold or field applied as a nutrient.
5. Makes the farmer compliant with manure management practices and allow him to expand.
6. Gas can be used on site or used to generate electricity to lower utility bills.
Of course this is municipal with lots of chemicals in the waste but still most of the benefits apply.
Sounds great - too good to be true?
What are the drawbacks? I’m sure there must be critics - what do they say against it?