Large-scale production of biogas
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I believe that large-scale biogas production can be integrated with sewage treatment plants; every county has such plants. The biogas slurry and residue resulting from fermentation can be used as fertilizer and returned to the fields, while biogas can supply the energy needs of the residents in the county
I think your idea is great! The source of raw materials for biogas is very important, and how to utilize them is also a crucial issue.
The energy density in wastewater is too low; however, when combined with organic waste, straw, etc., it is possible to carry out large-scale biogas fermentation
Biogas projects are good, but they are a bit difficult to implement: 1. Source of raw materials； 2. How to utilize biogas slurry (transportation costs) ； 3. Reuse of biogas slurry.
I hope comrades will make further efforts to work together to make biogas technology more mature!