Most composting systems are fairly passive. Neither yourself nor the system does any work, except for maybe a small army of worms. Some modern composters help Mother Nature along a bit.
For the home user:
This first unit is literally a kitchen composter. You hide it in a kitchn cupboard and connect it to mains electricity, of which it uses very little. There are three sizes of Nature Mill from an 8 litre per week capacity upto 15 litres. Food waste is put into a hopper along with an equal volume of compressed sawdust pellets. This is the same mixture of green and brown that standard garden compost bins should work to. After some days the waste is turned into compost. All the work is done by the Nature Mill gently moving the waste around to speed up the composting process.
For more information Nature Mill website opens in a new window
For commercial use:
The Wiggly Ridan works in a similiar manner but is designed for outside use and is powered by turning a handle. The ridan will handle 200 litres of organic waste each week. This again is an equal mix of food waste and brown materials such as paper, wood chips, leaves or cardboard. After a short while it will create ready to go compost for your garden. This solution is ideal for restaurants with kitchen gardens or for schools. It is estimated that about 80% of the volume is lost in the composting process. This equates in the long term to an average of 40 litres of compost production each week. This may not sound much but think of close to 160 large bags of garden centre compost (125 litre) per year at full capacity.
For more information the Wiggly Wigglers website opens in a new window