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Dry Toilet And No Smell Whatsoever

Posted by tennentslager , 14 February 2016 · 1,223 views

Apologies for the pic of the loo, warts and all so to speak...
This is the 'seperate' plastic toilet from Sweden that has a front funnel and back void. The thinking is to seperate the solid and liquid waste as it is the combination Of both together that causes the smells we don't like.
Urine runs to a soak away and the solids and toilet paper (and sawdust which helps the drying process and Erm...helps the appearance should you peer into the pit!)end up in the bucket below.
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There is a small fan running constantly which you can just see on the floor behind the urine waste tube.
The fan is powered from our 12v battery and draws next to no power at around 0.1 amps.
This provides an airflow which removes odours and aids the drying process for the solid waste.

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Once the bucket is full it can be sealed with a tight fitting lid and left for 18 months when it will be safe to use as compost. Some folk toss it on the fire but not sure I fancy that job.
Still needs a lick of paint but all in all very pleased this all works as promised in the literature.
As the blog title says there is no smell at all and its really a pleasant smallest room.

The bucket.....surely that must fill up pretty quickly?

Won't you end up with a big stash of full buckets very quickly?
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I did some work on a farm where they had a home made grown up version of this on stilts, with a standard green wheelie bin underneath. I had visions of once they changed the bin, put a bit of domestic rbbish on top, and leave it out on bin day.......

I also "wired" a remote composting public toilet. The wiring was a small solar panel and a small wind turbine to charge a battery to keep a fan running and power a low power light. Building control still insisted on an EIC and I seem to recall it was hard work getting the figurews to fit. There were an awful lot of N/A boxes ticked.
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15 Feb 2016 07:48 AM
The bucket...One for Steamy to formulate an equation I guess.
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16 Feb 2016 09:54 AM

Onoff, on 14 February 2016 - 07:19 PM, said:

The bucket.....surely that must fill up pretty quickly?
Depends on the number of people of course, but not as fast as you might think provided you use a separating system like this, and if you have a good sized compost heap you can put the contents on that (just make sure there's a covering layer of vegetative matter).

An "all in one" bucket on the other hand can fill very quickly (& eats sawdust like it's going out of fashion).
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16 Feb 2016 11:09 AM
Does your fan just vent into the space below a suspended floor, or is there ducting we can't see under there?
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16 Feb 2016 12:32 PM
Hi David,
There is no ducting. Underneath there is rock wool between the joists supported by netting and covered below by teram stapled to the underside of the joists so it just vents into this.
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