Due to a tiny fan (like the one in a computer) air is always being drawn out of the ‘solids’ bank and vented outside the boat.ĭepending on your, erm, frequency of use it’s difficult to say just how often you’ll have to empty the ‘solids’ bank. That’s not the case with one you’d install on your boat though. Anyone who’s been to a festival that’s used composting toilets would be forgiven for thinking that the smell would drive you off the boat. On that subject, and possibly the most asked question, is whether there’s a stink. There are a few reasons for this the air pockets it creates helps with aerobic decomposition, it improves the carbon to nitrogen ratio (which is important if you plan to put your compost to work) and, perhaps most importantly if you’ve a sensitive nose, it reduces odour. This can be in the form of sawdust (pet bedding), peat moss or coconut coir to name a few. Some designs recommend the addition of a carbon additive. Once you’ve made your deposit in the ‘solids’ compost bank, microorganisms get to work helping it decompose. Most models, if not all, have two openings. The big difference with boat borne composting systems is what goes in to the mix – human waste. It’s the last of these that this article concentrates on. Increasingly common though are composting toilets. There’ll be those using cassette toilets (Elsans), some with pump out systems and some with the relatively new incinerating toilets. ![]() As a boater you’ll have come across others on the water who dispose of their waste differently.
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