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          About Clivus Multrum™

          WCTNZ® is proud to distribute Clivus Multrum™ systems throughout New Zealand

          The Clivus Multrum™ process works on the same principle as an ordinary garden compost bin. Waste is collected in the composting chamber along with carbon rich material such as wood shavings to obtain a good carbon/nitrogen ratio for composting. Here the materials gradually decompose in the chamber's aerated environment. Baffles and air channels in the tank control air flow and this accelerates the composting process. A continuously operating fan pulls air down the toilet fixture and out through a vent stack creating a completely odourless bathroom at all times.

           

          Unique design for better performance

          Clivus Multrum™ is the most reliable and efficient composting toilet because of its superior design.

          An aerated micro-environment is crucial to any composting process and is maintained through the drawing effect of the ventilation fan and air channels through the compost pile. This unique system ensures complete decomposition of the waste during its long residence time.

          A large inspection door is also unique to the Clivus and allows the user to easily check that the system is functioning efficiently.

          Another design feature of the Clivus composting chamber is that access to the old and new compost is kept separate. The older, fully composted material settles to the bottom of the chamber where it is easily removed via the front access hatch.

           

          A continuous composting process

          The Clivus system is based on a “continuous” composting process in one large chamber, as against multiple smaller chambers that require a restart of the process after emptying. As the organic material decomposes it reduces in volume by up to 90%. The compost pile is therefore always “shrinking in the middle” whilst new material is being added to the top, and finished compost is removed from the bottom of the pile when appropriate.

           

          Advantages of a continuous composting process

          • As only one large composting chamber is used, the contents are in a more stable environment and are kept moist through normal use. In "batch" systems where the full chamber must be moved away while the next chamber is being filled, the first chamber often dries out and does not fully decompose. This problem does not arise with a Clivus!
          • There is little risk of overfilling the composting chamber due to the Clivus' great capacity, which makes it very tolerant of extremes in the rate of usage.
          • Only a relatively small and manageable amount of finished compost is removed at any one time. This means there is no heavy lifting or moving of smelling bins.
          • A larger area of compost bed means there will be greater liquid evaporation without the use of heaters. Urine is well-treated by passing through the larger compost bed and converted to an innocuous liquid.
          • The relatively simple design of the Clivus renders it far less susceptible to mechanical problems than other systems.