Research and application progress in zero discharge treatment technology of desulphurization wastewater from coal-fired power plants
This article provides an overview of the generation and water quality characteristics of flue-gas desulfurization wastewater from coal-fired power plants.It compares two zero-discharge treatment technologies for desulfurization wastewater:one based on pretreatment+nanofiltration+reverse osmosis+evaporative crystallization and the other based on multi-effect evaporation concentration+high-temperature flue gas evaporation.The membrane-process route mature and reliable,capable of realizing the resource utilization of inorganic salts,but it has higher investment and operating costs.The thermal-process route does not require softening pretreatment,is simple to operate and maintain,and can achieve the complete recovery and utilization of water,offering a broad application prospect.
Desulfurization wastewaterZero releaseMembrane technologyMulti-effect flash steamingHigh temperature bypass gas evaporation
万方数据
维普
