I have always wondered why a septic tank isn’t by default a biogas generator. I did some research today and the answer didn’t turn out to be so simple, apparently there are certain things that are needed to be added to a septic tank to turn it into a biogas generator. First you can’t have chemicals like detergents going into the biogas generator. Second, you need heat for more efficiency. Third you need airtight tanks. There are 4 stages of reactions that take place in a biogas generator only two of them happen in a septic. But the answer to our question in the title is: Yes, with a few tweaks you can turn a septic into biogas generator. But, taking the efficiency factor, is it worth it? Let us know what your experience is on our Facebook page.
Here are some resources for you to read more about the subject: