Dry Composting toilets treat sewage matter by using predominantly aerobic
bacteria. The following features of Nature-Loo
dry composting toilets illustrate this process:
1. Heat provides an ideal environment for aerobic bacteria to
thrive. The temperature within the toilet system will dictate whether
mesophilic organisms (below 40C), or thermophilic organisms (above
40C) are dominant. The system should move through both of these phases.
Some models use an electric heating element to speed the evaporation
and composting process. A thermostatically controlled heater will
use 3 kWh / day of power.
2. Moisture content must be kept between 45-70%, and systems
are designed to drain excess urine, which maintains humidity within
the main chambers. The water treatment unit being trailed at the Newton
House permits the drainage of the excess urine from the Nature-Loo
toilet into the Waterpac
water treatment unit.
3. Dark containers are used for compost bins in order to protect
light sensitive organisms and to absorb heat into the contents of
the chamber.
4. They are typically ventilated with a fan, to exhaust odors
and to aerate the pile. A low wattage electric 12v (44 kWh / year)
fan draws air through the compost chamber and pile and out a vent
to aid aeration.
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