12 Jan 2004 20:42:27 Anonymous
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I think environmentally it is better to have one larger vehicle of many compartments instead of collecting things seperately with many vehicles as it uses less petrol, but I suppose that they make it harder to add new materials for collection. It would be easier for the public to put everything in one bin, have it collected as this and then sorted at an MRF.
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It is the way they are split that dictates the various benefits and problems. For example, some are split half and half. In one side of the vehicle goes wet materials - organics, nappies etc, and in the other side goes dry - newspapers, clothes, cans, bottles etc. This method allows the wet slimey stuff to be kept separate from the dry valuable stuff.
So, the benefits are the cleaner the dry stuff the easier it is to sell and the more money you should get from it.
Problems arise due to the number of splits, as the more the vehicle has, the more it costs because there are more bins to lift and pay for. The message is also far more more complicated to the householder as you have to explain in detail what to do. Also, the vehicle fills up much earlier because one chamber may fill quicker than another.
These papers are helpful but quite detailed:
http://www.scotland.gov.uk/library5/environment/sepwastesumm.pdf
http://www.watermagazine.com/jc/kerbside.pdf
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