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Introduction:
Incineration is seen by some to be an attractive alternative to Landfill
for waste disposal. As with other environmental processes there are strong
emotional expressions of support or opposition from groups and individuals,
apparently based on scientific and logical reasoning. From our observations
of the arguments, the strongest pointer is that the 'punch up' illustrates
that efforts, attitudes and resources would be better directed towards
minimising waste and facilitating recycling. Nowhere is this more true
than in the UK which has a dismal record and not much in the way of promise
for the future.
Current Perceived Policies in the UK:
It does seem that the current administration saw the development
of existing incinerators and the creation of many new ones, around
the UK as a strategy to reduce the need for landfill sites. Landfill
sites are expensive and have a short life-cycle (eg 15 years),
they do have a potential for energy reclamation but not on a large
scale with current technologies. In some areas there is no space
left and presumably this state of affairs will get worse as existing
ones become full. An estimate of the size of of the problem can
be seen from predictions by Friends of the Earth as to
how many new or expansions of existing incinerators will be needed
in England alone [see link to UK Environment News]. We
stopped counting at 70 sites and no doubt this is not an accurate
figure but it gives us some feel about the scale.
Now, however, the official view may have to change in the face
of research by the US Environmental Protection Agency.
The Agency reported dioxins, produced by waste incineration have
been identified as the cause of many cancers, the worst component
being TCDD (aka Agent Orange). It did appear at that stage that
John Prescott and therefore Michael Meacher were somewhat ruffled
by the news.
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Some Arguments For Incineration:
Claimed advantages of incineration include the reduction of
landfill space needed, length of useful life, cost effectiveness,
safe disposal of some toxic pollutants, production of energy from
the burning waste (and CHP has been used in European cities [see
link to NSCA]), ability to reclaim metals such as aluminium,
and the usefulness of the residue eg for road building [see
the link to Technical Aspects of Incineration]. The arguments
are largely defensive because incineration in the past has been
justifiably criticised. However, these criticisms have led to
an undeniable improvement in the technology, regulation and processes
used, making incineration safer and more environmentally friendly.
It also seems to be true that a waste incinerator designed, built
and operated to the new standards (which could also produce energy)
would be much better at controlling pollution than a site built
primarily to produce energy.
Sheffield University Waste Incineration Centre (SUWIC)
[see link] is central to the Engineering Research Network
funded by the UK Engineering & Physical Sciences Research Council
(EPSRC). They say that although it is increasingly agreed
in the clean technology community that the thermal treatment of
the waste materials represents one of the best overall environmental
options, this view is not generally accepted by the public because
of the fear of the unknown effects of dioxins/furans. The network
aims to place industrial expertise in this field on a firm and
rigorously based foundation.
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Some Arguments Against Incineration:
Antagonists of incineration counter the arguments strongly and
those people living near to an incinerator plant or a proposed
site are particularly concerned. That is not surprising and even
those who do not feel threatened by proximity might heed the Camelot
slogan 'it could be you'. For sure in the future, if expansion
occurs as predicted, you are more likely to be in the vicinity
of an incinerator than to win a major prize in the lottery.
The opponents argue that toxic gases will escape, especially when
temperatures are not exactly maintained, and very fine particulates
will be discharged despite the promised filtering and scrubbing
which ideally should take place. These are extremely pernicious
contaminates which pass from the atmosphere into animal systems,
including humans (bioconcentration). The toxic gases include dioxins
which are regarded as carcinogenic and also oestrogenic (leading
to lowered fertility in males) [see link to Birmingham FoE].
There will also be large quantities of greenhouse gases, not normally
classed as toxic, such as carbon dioxide emitted.
Further, it is argued, the ash (and fly-ash from the filters)
will contain poisonous compounds containing heavy metals and this
has to be disposed of some way. These residues may account for
about 25% of the original waste. If it is used for road and path
construction it poses a definite risk especially where water allows
the compounds to be leached into the the ground. Even if deposited
in landfill sites similar dangers exist.
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What Should be Done?
Such a stand-off, when both methods appear to be unacceptable, requires
some lateral thinking. Not that the imagination needs to be stretched
very far. Way back in 1993 a Royal Commission on Environmental Pollution
issued a four stage decision procedure [see the Birmingham Link]
of which the first two stages state: 1 Wherever possible, avoid
creating wastes, 2 Where wastes are unavoidable, recycle them if
possible. We cannot find any fault with these strategic recommendations
but would you know about them? It is interesting to look at how
the UK has compared with other countries in the recycling stakes
[see link to Friends of the Earth]. In 1998, Switzerland,
the Netherlands, Austria, Norway, Sweden, the USA, Germany, Finland,
Canada and Denmark had household recycling rates ranging from 28%
to 52% (some figures predate 1998) and by comparison the England/Wales
figure was 8%. Statistics for glass and steel recycling also put
the UK at or near the bottom of similar lists (Canada and US not
quoted).
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Summary:
Never have we seen a better argument for national leadership to
provide a strategy, backed with the resources, to foster a culture
which reduces waste and provides facilities for recycling. The cost
of building and operating incinerators or providing landfill sites
is very significant. If substantial parts of these funds were to
be diverted towards waste minimisation and encouraging recycling,
the need for waste disposal could be enormously reduced, apart from
reducing the dangers which arise from both incineration and landfill.
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Postscript: In Newcastle upon Tyne
grassroots groups and trade unions were celebrating a success in
'community democracy', writes Hilary Wainwright (Guardian,
Environment, 26 Nov 2003). A coalition of individuals and groups
known as the 'Ban Waste' partnership was formed after the
1999 Byker incinerator scandal (high levels of toxicity in the city's
allotments) and it appears that in Nov 2003 they convinced the city
council that incineration should not form part of its waste strategy
but it should commit to expanding recycling. The strategy included
winning householders over and also proposing that the ubiquitous
SITA should be replaced by the local firm Holystones.
Some of the material on the Ban Waste site makes scary reading,
why not go and look at www.banwaste.org.uk/.
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