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Composting Toilet Second Chamber


Composting Toilet Second Chamber – Evaporation Chamber

The second chamber in the Sun Mar composting toilet is the evaporation chamber. Compost must be kept moist but not saturated. Excess liquid from the Bio-Drum strains through a stainless mesh screen onto the evaporation chamber. The Sun Mar evaporation chamber maximises evaporation of liquid due to the large surface area combined with heat and moving air.

On all Sun Mar Centrex composting toilets the liquid falls first onto an evaporating tray and then to the main evaporating surface. The tray not only helps oxygenate this liquid, it also traps any peat mix debris, and almost doubles the evaporating surface. Evaporating trays can be removed and cleaned if necessary, through the door opening on the Centrex 2000 composting toilets, and through the drawer access port on Centrex 3000.

For optimum results evaporation is assisted on 230 Volt electric models by a thermostatically controlled heating element. Sealed in a compartment underneath the evaporating chamber, the heater warms the floor of the evaporating chamber without drying out the compost. In non-electric units, although some liquid is evaporated by passive venting, the overflow drains must always be connected.

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