Hey folks!
working on my first design, and planning to install a biofilter system for greywater leading into mulchpits next to an edible fence.
Now since we are in the Berlin area, where the winters can get down to -5°C, I was wondering if there's a way to insulate the pipes with mulch? Thinking here about the same process which heats up the hugelcultures.
So the concrete idea is to lay the pipes underground (sandy soil) and fill mulch around the pipe (bottom, sides, top) and top it up with the sand, for the distance they need until they reach the mulch pits, where the water is to be processed by microorganisms and feeding an edible fence.
I got the idea from the milkwood farm in australia and saw other people using the same system. Oasis design gave me the idea of the "mulch-insulation" for the pipe. Does that really generate enough heat to keep the are around the pipe above 0°C?
Thanks for inputs people! Cheers,
Robert