I am thinking of starting a small farm and trying to focus on making a sustainable ecological system. Need some holes poked in my plan before they poke through my wallet:)
http://www.prairieswine.com/pdf/3418.pdf A french study where they used three equal sized ponds/raceways to treat/use Swine manure. First Algal raceways then daphnia ponds and finally the fish pond. Was thinking basically the same system with a few tweaks.
First an array of salchicha biodigesters. An array of them to prevent contamination- so i know the effluent will be safe.
Effluent to Algae, solids to black soldier fly's/ worms
For the Algae probably a closed photoreactor instead of the raceways, again to prevent contamination. Maybe like this http://images.thecarconnection.com/med/wastewater-biofuel-algae-cir... or this https://www.youtube.com/watch?v=Cvi_70sZV-c
For the Daphnia, possibly something like a stacked shrimp raceway but shallower. Looking for something that will be easy and gentle to harvest. http://www.popsci.com/science/article/2011-09/new-shrimp-farming-te...
Looking at raising Sacramento perch in an aquaponic system. They are native to my area so I am hoping it will be easier to provide ideal conditions. I am sure the fry will eat the Daphnia, not so sure as they get older. Was thinking of also growing mosquito fish on the daphnia as a live feed for the older Sac perch.
Here is a study saying Barramundi's growth improved on them. http://onlinelibrary.wiley.com/doi/10.1111/j.1365-2109.2010.02595.x...
Daphnia are used to clean water in waste treatment plants, does the biodgester-algae-daphnia provide enough pathogen break or should I dry the algae first, Ive read this reduces the nutrient content.
Any thoughts would be much appreciated.