ISSN:
1747-6593
Source:
Blackwell Publishing Journal Backfiles 1879-2005
Topics:
Energy, Environment Protection, Nuclear Power Engineering
Notes:
Electricity generation in the UK is dominated by fossil fuels, principally coal. In order to reduce emissions of sulphur dioxide to the atmosphere new fossil fuel-fired power stations will be equipped with flue-gas desulphurization (FGD) facilities, and in the short term the Central Electricity Generating Board proposes to retrofit FGD systems to 6000 MW of its coal-fired generation capacity, including the 4000-MW station at Drax. The first generation of these plants will be based on the limestone-gypsum process.In addition to the product gypsum the process generates a liquid effluent as a result of the need to remove chloride from the process inter alia to protect gypsum quality. This effluent also contains other contaminants such as metals, fluoride and nitrate, and a mathematical model has been developed to predict effluent volumes and composition as a function of different coal, limestone and process water combinations. The model also calculates the effect of the discharge of this effluent on a receiving watercourse, both untreated and following treatment based on neutralization and precipitation/sedimentation.The paper discusses the development of the mathematical model and the impact of treated FGD effluent on power station cooling-water discharges, via which the effluent would normally be discharged, for both once-through and recirculating cooling systems used at coastal and inland stations respectively.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1111/j.1747-6593.1989.tb01517.x
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