Composting Toilets vs. Holding Tank - Page 7 - SailNet Community
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post #61 of 114 Old 10-24-2013
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Re: Composting Toilets vs. Holding Tank

Building your own composter for under $50 is not all that difficult. I raised the lid around the big hole 3/8th of an inch, leaving little chance of liquids entering the solids chamber.

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post #62 of 114 Old 10-24-2013
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Re: Composting Toilets vs. Holding Tank

Every "composting" toilet on a boat is just a wet/dry separated holding tank.

A real composting toilet would need about a hundred yards of inclined ramp under it, so the feces could actually compost during the 90 days it took to get to the bottom of the ramp. The same way it needs about 90 days in every actual composting toilet.

Buy a box of clumping kitty litter, skip the coconut husks, the separators, and the flies. Let's face it guys, there are no composting toilets on boats. What comes out is just dried feces, not compost at all.
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post #63 of 114 Old 10-24-2013
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Re: Composting Toilets vs. Holding Tank

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....What comes out is just dried feces, not compost at all.
It occurs to me that the reason a "composter" doesn't stink is that there is ample air introduced. Aerobic bacteria doesn't smell, it's low Ox anaerobic bacteria that smells. Use the same high Ox solution on a holding tank and no smell there either.


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post #64 of 114 Old 10-24-2013
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Re: Composting Toilets vs. Holding Tank

We bought a Natureshead at the boat show. I met some people who had one and they convinced me.
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Re: Composting Toilets vs. Holding Tank

And indeed there are a number of threads online saying that if you've got an adequate vent line on the holding tank, or better yet, two vents lines (fore and aft, etc. to ensure airflow) the tank is unlikely to stink, for just that reason.
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post #66 of 114 Old 11-15-2013
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Re: Composting Toilets vs. Holding Tank

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Maybe I should sell parks Canada a separator seat-bowl, so theirs will work. Maybe I should suggest they take a mold off mine, and make their own.
A footrest in the right place deals with the extra height issue.
I have been using a separator seat- composting head for several years now, and, like most people using them, I would never put a conventional head and holding tank in my boat.
I am thinking of going that route. what brand do you have?
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post #67 of 114 Old 11-15-2013
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Re: Composting Toilets vs. Holding Tank

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I've thought of this a bit lately and I don't think I understand the problem. WHY should raw excrement be such a big problem in landfills? As I understand it, they are built with heavy barriers underneath to keep from contaminating ground water (because, right or wrong, bad things are always going to be thrown in land fills). But, more than that, it seems to me that the half cooked compost recipe will be just as likely to continue cooking in a landfill as out of it, although perhaps slower (but maybe not...don't landfills get very warm, and doesn't the extra heat speed decomposition? Or does getting buried remove too much oxygen?).

Not having children, I also wonder what the recommendation would be for disposing of baby diapers, if the trash is not a good idea. And has millions upon millions of dirty diapers caused any kind of problem?

I think it was the c-head guy, but maybe someone else, who suggested "treating" the waste in a pickle bucket with bleach in order to legally be allowed to dump it. What are your views on this?

Not intending to be snarky, and these are serious questions. Leaving aside any legal restriction, I'm looking at the moral and ethical impact of dumping the waste.
yeah. I have to say I don't know what would be so terrible about t. it's crap. millions of animals and humans have crapped all over the globe. it's called fertilizer. farmers dump it in their fields to grow your food. it turns to dirt. it's not radioactive waste.
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Re: Composting Toilets vs. Holding Tank

Human crap and wild animal crap couldn't be more different. From pharmaceuticals to additives, by comparison, our excrement is toxic.

I'm no tree hugger and I'm even more upset at the illogical marine discharge laws (meaning the prohibition of dumping in harbors makes sense, but there is no science to the 3 mile limit for what amounts to a gallon of actual waste). However, I can't deny that human waste has both bacteria and chemicals that are a larger issue than a bear crapping berries in the woods.


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Re: Composting Toilets vs. Holding Tank

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I did not know that. I thought only crap from sick people had the pathogens and while all crap was full of bacteria it wasn't necessarily harmful.

I read an article that some folks take poop pills to reintroduce beneficial bacteria back into their gut.
Asians have been fertilizing rice patties with human feces for centuries. I don't seem to notice their populations being decimated by feces born pathogens.
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post #70 of 114 Old 11-15-2013
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Re: Composting Toilets vs. Holding Tank

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Human crap and wild animal crap couldn't be more different. From pharmaceuticals to additives, by comparison, our excrement is toxic.

I'm no tree hugger and I'm even more upset at the illogical marine discharge laws (meaning the prohibition of dumping in harbors makes sense, but there is no science to the 3 mile limit for what amounts to a gallon of actual waste). However, I can't deny that human waste has both bacteria and chemicals that are a larger issue than a bear crapping berries in the woods.
it's not illegocial.. it keeps it from washing up on the beaches. Remember the Candybar incident in Caddyshack?

It also gives the idiots a target to shoot for, otherwise they -would- be dumping their tanks just off of the beaches (most likely because they would think it is funny)

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