Abstract:

Limestonegypsum wet desulfurization technology was widely used in the flue gas desulfurization process of coalfired power plants, but the desulfurization waste water produced in the process is of high salinity, heavy metal, complex composition, corrosivity and is vulnerable to scale. It is one of the most difficulttreated waste water from thermal power plants.Resources，characteristics，traditional treatments and reusing methods of  desulfurization waste water were described.The main technical route and application status of desulfurization waste water zeroemission were introduced, and so did its research direction in the future. It was considered that an optimum desulfurization waste water zeroemission technical route for a power plant should be designed based on its water quality and quantity.Bypass flue duct gas evaporation technology is applied well and of economic advantages, which provides a direction for desulfurization waste water recycling and lowcost treatment.

Key words:

font-size: 10.5pt, mso-spacerun: 'yes', mso-font-kerning: 1.0000pt">coalfont-size: 10.5pt, mso-spacerun: 'yes', mso-font-kerning: 1.0000pt">font-size: 10.5pt, mso-spacerun: 'yes', mso-font-kerning: 1.0000pt">fired power plants, desulphurization waste water, zero emission, waste water treatmentfont-size: 10.5pt, mso-spacerun: 'yes', mso-font-kerning: 1.0000pt">