I agree, it is reaaly important to avoid feeding rats. I keep all kitchen waste indoors until it is rotten and never put fresh food waste outside. Compost should be enclosed in a green cone or similar, and have a metal mesh base, if there is any danger of rats digging in from below. Compost worms do most of the work and they will appear if the composter is on the earth, or can be brought in from an existing compost heap. Anglers' brandlings are compost worms. Food waste, rotting, should be mixed with garden waste, and even torn paper or card, to avoid it getting wet and acid.
Another large MSW composter is the Lahore Composting Facility in Lahore, Pakistan, which has a capacity to convert 1,000 tonnes of municipal solid waste per day into compost. It also has a capacity to convert substantial portion of the intake into Refuse-derived fuel (RDF) materials for further combustion use in several energy consuming industries across Pakistan e.g., in cement manufacturing companies where it is used to heat up the Cement Kiln systems. This project has also been approved by the Executive Board of the United Nations Framework Convention on Climate Change (UNFCCC) for reduction of emission of methane gas into the climate and has been registered with a capacity of reducing 108,686 metric tonnes CO2 equivalent per annum.
Ethical dilemma: Is it safe to compost food waste? This article appeared on p63 of the Observer Magazine section of the Observer on Sunday 17 August 2008. It was published on guardian.co.uk at 00.01 BST on Sunday 17 August 2008. It was last modified at 00.04 BST on Sunday 17 August 2008. It was first published at 00.04 BST on Sunday 17 August 2008.
A typical household throws away an estimated 474 pounds of food waste each year. Put another way, that is about 1.5 lbs per person a day in the U.S. Food scraps generated by all households in the United States could be piled on a football field more than five miles (26,400 feet) high!