The use of wastes as substitute fuels in other processes, for example shredded tire in cement production, can also reduce consumption of fossil fuels but, like incineration, is controversial. It may be a more efficient use of tires to crumb them for incorporation in the material used for road building. Ferrous metals can be recovered by electromagnetic means from municipal waste incinerator ash, but the scrap is of a lower grade than if it were pre-sorted. Research is taking place to establish if incinerator ash is suitable for recovery and use, to reduce the amount of residue to be land filled - but incorporating it into building blocks is unlikely to win wide acclaim. It may be possible to vitrify ash into a slag suitable for use in road construction, but who is calling for incineration in the first place? Indeed, recycling must take place - the UK has one of the worst records in Europe. Clearly new incineration plants are not essential, and could quickly become redundant, causing a problem for councils with long contracts, as waste reduction and recycling are made easier for us and take a firmer hold in our way of life.
TYPES OF INCINERATION PLANT.
BIS plant .
Static hearth incineration plant with a capacity ranging from 50,000 to 1,600,000 Kcal/h. In their basic design, this kind of plant is designed to burn wastes, which do not contain halogenated constituents, but flue gas filtration (de-dusting) and heat recovery are available.
BIS CREM plant.
This kind of plant is basically similar to the BIS static hearth incinerator, but it is equipped for an easy recovery of ashes. Ash containers may be built-in at the bottom of the cremator for spillage free ash collection, while the plant remains hot.
BI plant .
Rotary kiln incineration plant with a capacity ranging from 500,000 to 9,000,000 Kcal/h per stream. The plant is designed to process a wide variety of wastes and is equipped with our own tailor-made design of closed-loop, wet flue-gas scrubbing system.
