Concern about the environmental damage caused by acid deposition has lead to national programmes to reduce acid precursor emissions. In the UK, a retrofit programme of flue gas desulphurisation (FGD) to three 2,000 MW coal-fired power stations has been announced, with up to four new stations equipped with FGD likely to follow by the year 2000. Whilst the positive effects of acid deposition abatement are recognised there has been considerable concern over the negative aspects of the programme arising, particularly, from the raw material requirements of an FGD plant and the need to dispose of waste products. A careful choice of the most appropriate technology can significantly reduce the negative impacts but such a choice can only be made after an environmental assessment of the national FGD programme.
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