Excess liquid drains from the compost tank (after treatment) into a small pumpwell, and is recyled back to top of compost tank for loss by evaporation through the continuos venting system. This arrangement is suitable for low humidity climates and/or low utilisation toilet systems, subject to evaluation by Clivus Multrum Australia.
The liquid remains within a "closed system" and there is no liquid discharge to a land application. If recircualtion pump fails to operate, any accumulationg liquid will back up into the larger compost tank which acts as a reserve storage to prevent spillage, and will provide visual indication o ffault at next maintenance inspection of the compost tank.
Low voltage DC system does not require special expertise to maintain it, and utilises marine components for corrosion resistance and ready availability. Submersible low-voltage pump and float-switch are mounted on a lift-out frame in the pumpwell for eay removal and maintenance.
Float-switch control of pump will recirculate approx. 10 litres per cycle, depending on size of well.