Composting toilets

https://www.ogotoilet.com.au/
I have purchased the one on the left for our new build OKA and it did occur to me that it could be portable (although needs 12V), but they now have another that might suit you better?
Cheers,
Peter
OKA196 motorhome

What happens to the 'compost', would solids break down in a week time frame? Solids (compost) could not be disposed of in the conventional sewerage setups?
Do you dig a hole and bury?

I have a OGO and like it. It's advertised as 25 solids uses which is rubbish, I get about 10. Maybe a 6 year old could get 25 uses but not an adult. I double bag it just to be safe and throw it up the tip with my household rubbish that goes to landfill, it's only compost.

I would hope that those that have composting toilets are exceptionally particular how they bag theirtoilet contents. In caravan parks manybins are transfered bin to bin before it leaves the park. A burst bag is going to upset the cleaning staff?

This one is portable, gets some good reviews by campers on youtube.https://www.trelino.com/en-au/products/trelino%C2%AE-evo-s

Might want to have a look at this one as it’s a bit cheaper
https://www.joolca.com.au/products/gottago

It's not clear what question you're really asking. The pros and cons of a composting toilet have been debated extensively online, and a little searching will find plenty of information. Those who have one, like me, are almost universally happy with them. Those against generally don't like the idea, or have reservations about the disposal of the compost waste, as per some of the comments in this thread. I don't share those concerns, based on my experience.

Of course the urine bottle needs to be emptied on a fairly regular basis, so the benefits for those who simply go from caravan park to caravan park and are always close to a dump point are debatable. But not all CPs have a dump point, and if you want to go off-grid and away from a dump point, then the composter is a big advantage.

You asked about portable. The two most commonly used units - Nature's Head and OGO - are not really portable. They're significant units that require 12V power for a fan and have a vent tube that has to be routed somewhere.Kimberley had an option in their now discontinued Kamper whereby the NH unit was carried in a gullwing compartment, and set up in an ensuite tent, but I'm not aware of any other brand doing that. A NH gets a bit heavy as it fills.

More recently some brands have introduced more compact composting toilets. OGO have one, there is a brand called Cuddy that I'm aware of, and I was told by Ultimate that they now have the option of a Trelino, that fits in the compartment where a portapotty unit would otherwise go. It sounds like you should research these. I have not seen any commentary on them, most people want / have installed units.

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Does anyone else remember the days when railway carriage toilets emptied directly onto the tracks? You could look down and see the sleepers whizzing past.
I cannot imagine what the gangers thought about that practice.
There was always a sign that requested "Please do not use the toilet whilst the train is at the station".

Back wen i were a lad we had the night cart come by imagine the mahogany brown stains emptying those.
Side note i luv it wen these posts go sideways to positive banter.