Learn About No-Mix Toilets Here
No-Mix toilets promote sustainable living. You will find helpful, unbiased information at this website.
In a no-mix toilet, there is a place to pee (in front) and a place
to poo (farther back). Separate piping serves the two areas, designed
to keep pee isolated from poo.
One interesting aspect is that men need to urinate sitting down, or use a separate urinal.
References:
Manufacturer
No-Mix 2
Toilet Trouble