[Greenbuilding] Composting Toilet

[Lynelle Hamilton]

Hi John,

Actually, I DO like it, although I don't know if the tradespeople will.  
My daughter and I made something similar for their camping trips (4 
girls under 9 mean a lot of trips to the loo at night).

Thanks!

Lynelle


On 2017-07-11 6:19 PM, John Salmen wrote:
>
> Your not going to like this suggestion – all I can say is they are 
> cheap, the technology works extremely well for composting - and as a 
> reference I had a very motivated vegan client in Portland (ad Dr. no 
> less) who used these in all of the bathrooms of his turn of the 
> century house.
>
> http://www.appropedia.org/How_to_make_and_use_a_sawdust_toilet
>
> this plan is decent and works surprisingly well – no bins to empty – 
> but I would spend a little mental energy on drilling out and attaching 
> some venting (computer fan works well).
>
> I designed and built quite a few toilet systems decades ago. Not an 
> easy thing if you are trying to make everything work. It is difficult 
> to make a vented, liquid tight system – which is why commercial 
> composting toilets are basically useless. If they deal with liquid 
> they use heat – baked poop. I did design a very nice toilet for a 
> client that circulated liquid as a spray that both denitrifies and 
> allows for some evaporation (it was a handpump – similar to a flush 
> handle and children especially enjoyed that feature). This was a 
> permanent installation that is still in use 20 years later but was 
> expensive. The venting was complex but was essentially a well designed 
> chimney. It was a flip system (2 containers – each lasted one year 
> allowing the previous years collection to be emptied after a year – a 
> dry compost at that point).
>
> Ironically I think the bucket system is the best. Like a large dog 
> poop bag – but with better followup.
>
> For the 5 gal. bucket toilet - Swap the buckets out as soon as you 
> want to – buy as many buckets as you need. Seal with lids (leaving the 
> vent hole open) and date the buckets – leave them for 1 year or so and 
> then use as a tree fertilizer – can give them a shake every now and 
> then but mouldering is effective.
>
> Jjohn
>
> *From:*Greenbuilding 
> [mailto:greenbuilding-bounces at lists.bioenergylists.org] *On Behalf Of 
> *Lynelle Hamilton
> *Sent:* Tuesday, July 11, 2017 2:41 PM
> *To:* Green Building
> *Subject:* [Greenbuilding] Composting Toilet
>
> Hi All,
>
> Has anyone had any experience with self-contained composting toilets? 
> I am putting one in my temporary living space, while I build. I may 
> leave the unit in the structure afterward. I'd prefer one that does 
> not require specialized venting parts (some do) and that does not 
> require a drain to send liquids to the outside, but will consider one 
> if the unit is clearly a better choice.  I've looked at Sun-Mar, Excel 
> and one from Sutherland Ontario, but have no idea which models perform 
> well. It's for one person. Cost, of course, is a factor!
>
> Many thanks!
>
> Lynelle
>
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