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.
关键词
脱硫废水/零排放/膜技术/多效闪蒸/高温旁路烟气蒸发
Key words
Desulfurization wastewater/Zero release/Membrane technology/Multi-effect flash steaming/High temperature bypass gas evaporation
维普
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