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Old 03-17-2015, 09:41 AM   #1
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Starbucks composting toilet

We have looked at so many videos of composting toilets that are heads are swimming with ideas.
One couple uses coffee grounds from Starbucks mixed with sawdust. Is anyone here doing that? I saw it but can't figure how you dry the grounds so they don't end up moldy while you wait to use them in the composting toilet. The ones I saw were dry. Maybe a food dehydrator?
I want to work out the problems before I go trying something and have a moldy smelly mess to deal with in a bathroom that is near the bed and kitchen if you know what I mean.
As a woodworker (by hobby) I have plenty of sawdust. Its the additives I want to figure out.
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Old 03-17-2015, 09:47 AM   #2
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I think a piece of tin in the sun may do the job.
I don't think it would get moldy if you used freshly used grounds and dried them immediately.
Maybe a screen bottom shallow rectangular box would be the best way to go. set it out on a sunny day and it wouldn't take too long.
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Old 03-17-2015, 12:20 PM   #3
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I'm going the composting route as well, from the research that I've done it seems that toilets that separate the urine work best. I will likely go with Natures Head.
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Old 03-17-2015, 03:20 PM   #4
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Best use of Starbucks coffee that I've ever seen.
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Old 03-17-2015, 04:08 PM   #5
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just wondering why people are choosing to use a composting toilet? personally I don't like them, had one many years ago at year round camp. Putting in a rv toilet not that big a deal. but that's just me.
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Old 03-17-2015, 06:51 PM   #6
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I'm glad you asked that question - I am wondering why as well, however I'm currently on track to use a dehydrating, not composing toilet.

The nature's head toilet is primarily dehydrating, and secondary treatment through composting is done by emptying the storage box into an outdoor compost pile.

My main interest in this direction is the fact that I can store a lot more poop and use a lot less water by using a dehydrating toilet as opposed to the classic black water holding tank system.

What are your thoughts?


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Originally Posted by gbstewart View Post
just wondering why people are choosing to use a composting toilet? personally I don't like them, had one many years ago at year round camp. Putting in a rv toilet not that big a deal. but that's just me.
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Old 03-17-2015, 07:07 PM   #7
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I guess I'm like Al Bundy. I have to hear the bwoooshh!
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Old 03-17-2015, 07:19 PM   #8
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Quote:
Originally Posted by aaronsb View Post
I'm glad you asked that question - I am wondering why as well, however I'm currently on track to use a dehydrating, not composing toilet.

The nature's head toilet is primarily dehydrating, and secondary treatment through composting is done by emptying the storage box into an outdoor compost pile.

My main interest in this direction is the fact that I can store a lot more poop and use a lot less water by using a dehydrating toilet as opposed to the classic black water holding tank system.

What are your thoughts?
not to crazy about that as well. it just seems that there's something else go wrong, just something wrong about dehydrating a turd into beef jerky.
To me a simple rv toilet works well, with a good size black tank. they are simple to dump, and if you had to you can use a grinder pump and pump up to a 100 feet away into any sewer line, or out house.
but thats just me, do what you want, I'm sure it will work just fine.
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Old 03-17-2015, 07:55 PM   #9
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I totally get the desire, but I think these composting systems make more sense for people that are going off-grid for a while, or want to be super self-sufficient. Our current black water tank is the last thing to fill up, and it's common in a lot of campers to work out systems where you can dump the grey over to the black for extra storage. RV toilets use very little water because they just dump straight down (it's just rinsing the bowl, really, and providing a bit of "transport" for what's down there), and poop doesn't take a lot of space. I bet we could go several weeks without filling it, and there's 5 of us...

Love the macerator pump idea. We've seen plenty of big rigs with them and I'm tired of dumping our black water tank using a stanky hose that's hard to store, easy to crack, etc. The macerator is one of the things we're splurging on in our build.

But we roam around a lot - we don't plan to spend more than a week or two in any one spot. We'll boondock a bit, but usually not more than a few days. Your mileage may vary.
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Old 03-17-2015, 09:09 PM   #10
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I looked at many alternatives before I went with the macerating toilet idea. First, you don't have to worry about the large "solids" settling to the bottom as the mascerating pump turns it all into a fine slurry. Second, you don't have to worry about where you put the toilet vs the black water tank. The mascerating pump built into the toilet will pump your business anywhere under the bus you want. You don't have to rely on gravity alone. Third, you don't have to worry about the smells that some non-traditional toilets have as a problem. Some people say no problem while others say they would not go the non-traditional route again. I have not heard about one negative comment concerning macerating toilets. I am sure they are out there, but not at the volume I have seen on non-traditional methods of toileting. Fourth, we also hate the huge sewer hose you need to use with most toilets. The mascerating toilet combined with a mascerating pump at your sewer hookup under the bus insures you can pump your black and gray water as much as 150 feet away and 25 feet uphill.

Our mascerating pump setup will use a collapsible 1" hose that will expand from a 7' length to over 21'. Much better than those giant sewer hoses that most RVs use. I also installed a 47 gallon black water tank that should easily last several weeks in a pinch.

In the final analysis, it really depends on your personal choices and desires. Go with what works for you and use all of the various experiences from your fellow skoolies as a guide in your decisions. The path through the minefields of skoolie conversions has already been charted for you by those coming before. Follow the path wisely and your results will be incredible.
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