You got me thinking so, I got my wife to surf the net with me. We spent last night looking for compost toilets. Here are the 4 major makers that I found.
Natures Head
http://www.natureshead.net/tin...SKnswCFZNgfgodIB8G-w
Air Head
http://airheadtoilet.com/
Separett
https://www.separett-usa.com/i...terless-toilets.html
C Head
http://www.c-head.com/
All four have advantages. One thing that the C head focused on was taking the urine and directing it into holding tanks instead of the bottle in the front. Every one of the toilets I searched had the capacity to accomplish that task. I don't yet know how easy it would be to have it done. If I were to remove the existing toilet, put a permanent plug in the toilet flange and then fiberglass over the hole, it would improve the size of my wet bath. All of the toilets function stand alone without having to be mounted. They are mounted to make certain that the contents don't spill while driving down the road or for marine applications during rough seas. Once the fiberglass is in place the toilet can be hooked up to the venting, and a pipe installed to the urine collector that would lead to a drain pipe connected to the gray tank under the sink. With the black tank need eliminated, I would then combine the gray and black tanks by installing the external valve. The capacity on my gray is 17 gallons and on the black is 19 giving me a combined tank of 36 gallons. Currently I fill the black tank first. The overall volume going into the black tank would be decreased by 85% giving me the ability to use the freed up tank for shower and other gray water needs.
What am I missing? Has anyone else hooked a composting toilet up to have the liquids continue to drain into the holding tanks? If so, how have you done it?
I should mention that my DW was totally on board. The ability to use the toilet in the winter would be by hooking back to the holding bottle for liquids. She loved the idea.