Hi @sizzlingmonkeys . Yes you are correct that there is a danger of chemical use, thats another reason we are building a dual chamber system so that if one worm colony is damaged we can switch to the other. Luckily worms are mobile and will move away from negative chemical stimuli. This is all part of the experimentation process
Yes you can use soaps. What im conerned about as with all WWG are soaps containing the persistent biocide, Triclosan
What we will do is provide a basic soap for people to wash hands. Im thinking we can install a basin, a "Wastafel" outside and that water will go to another location, not to the worm digesters.
For cleaning the toilet there is no need to use harsh chemical cleaners. Some vinegar or again just a basic soap, without antibacterial agents will be provided to maintain it.
To assist in toilet health its sueful to flush some activated EM4 ( effective microorganism , mostly lactobacillus) down the system to help it digest the biosolids.
I dod believe the system can handle some chemical cleaners, but keep it simple.
Yes, the Blackwater system works with a flush toilet and that is the star element of this design, merging the flush toilet front end, with the composting back end. I believe that's the the main impediment to the uptake of composting toilets until now, with the other being the price.