Price varies with CV, numbers of items for presorting and checking, difficult materials requiring slow feed through the plant. It is assumed that very high cost waste for incineration, such as PCBs, is not going to landfill at present and therefore the highest rates have been excluded. On site energy recovery reduces cost compared to combustion systems, partly because the wastes are chosen to be suitable for the process. Savings to be made are in collection and transport costs and use of energy by producer, rather than by the waste management company. Gasification probably being used in conjunction with on-site use of liquid wastes.
Pyrolysis needs a use for residues.
These are other thermal systems. Prices very variable, partly to do with ability to use final products. Costs are for whole process, including secondary treatment or landfill of vitrified product. Lowest costs will be for plasma systems with high value metal recovery and vitrification with product recycled as building materials. There is insufficient detail in the waste stream data available to enable a comprehensive quantitative assessment of treatment and disposal costs.