Is the effluent produced by a biogas generator enough to feed plants in a hydroponic system?
I'm looking at various ways to grow food free/almost free in a small space. I would like to grow enough veg to feed myself comfortably.
Hydroponics in a vertical farm set up would allow me to grow lots of veg in a small space, trouble is I now need nutrients to feed my plants.
After much reading, it looks like I could anaerobically digest all my food waste (including meat, diary, plant stems and anything else that decomposes) in a biogenerator.
If I use the resulting liquid effluent, would this alone be sufficient to grow healthy plants. Are all the nutrients they need going to be in sufficient proportion and are they all in an accessible form for plants.
Will I need to add bottled nutrients from a store to top it up?
Another question is if the effluent is safe or a biohazard? My reading so far suggests that most pathogens are killed off in the anaerobic process.
Is there anyone who has tried anything like this already? So far I can only find people who are fertilising crops in soil with the effluent.
Any comments are greatly appreciated.
P.S: for those who do not know what a biogenrator does/is.. a quick description. Its a sealed tank filled with water, waste (shredded) is added, naturally occuring bacteria in the water (not dependent on oxygen to survive) breakdown the waste into their nutrient parts, methane is also produced by the bacteria (methane is CH4, carbon is in the waste and hydrogen is in the water), the methane can be tapped off for burning and the old liquid can also be tapped off, supposedly this liquid is an extremely good nutrient source, though I don't know if it could sustain plants grown hydroponically on its own.