I saw something online about some of the byproducts of BSFL. The leachate (the liquid by product?) can be diluted into a liquid fertilizer, much like one of the by products for an anaerobic digester. I saw people using the solid waste from them (name?) as a feed for their worms. I also saw someone using bsfl waste (solid? Maybe liquid?) In their anaerobic digesters and I may have seen something that did the reverse, that is digest first. I also know that BSFL digest tanks sometimes become anaerobic which is good for the bacteria, but bad for the larvae, right?
What I like about BSFL is they can eat pretty much anything and quickly and produce food for my chickens. What I don't like is that they can't eat grass clippings, leaves, paper, cardboard, and other high cellulose items.
What I like about biogas production is that we would be capturing the gases for further use, but it may have issues with cardboard and paper (though I believe non Woody garden clippings are fine). It would bother me to produce gas in a composting system that isn't being collected, assuming there is enough to collect. Also, it seems to be able to handle less chicken manure.
I've looked into worms and crickets as well. I'd feed the crickets to chickens, but probably not the worms (seems like a lot of work.) I could use crickets to break down high cellulose items, but if I'm loosing gas, why bother? And since they don't really eat cardboard, I'd rather not bother since I'd really like to get rid of that without burning it.
So I have many questions. First I guess would be, how are you mixing biogas with other composting methods? Does anyone think a hybrid system that allows anaerobic digestion and BSFL would be possible? That is, could we successfully separate out the material for further digestion from the larvae., Without losing the larvae? I'm willing to do some work to do this and willing to use other bugs in the process. Like BSFL-worms (add in cellulose here)-anaerobic digester. Or perhaps an aerated section for bsfl to live in and an anaerobic section for further digestion with gas being collected and combined for both? And how do you dispose of your cardboard and paper?
I'm not sure about any of the rest, but cardboard and paper are good food for composting worms, which shouldn't be hard to raise at all.
I even saw a near trick for collecting them.
A half a banana in the bin with no other food scraps will draw them like a magnet.
Generally in life, a dual system does not excel at both.
For instance, dual-purpose sheep. I had them, and they did not make the best meat sheep with high weight conversions, nor did they make the most wool like the real wooly breeds. They made better than average wool, and they made better carcasses than true wool breeds of sheep, but they did not excel at each one.
And most things are that way.
I would think with biogas you would really have to have the system excel otherwise it just would not be worth doing, nor produce much biogas. Plus, you are introducing more complexity into an already complex system. That just increases the level of difficulty, and increases the risk of failure.