Recent Advances in Zero Discharge Treatment Technologies for Desulfurization Wastewater in Coal-Fired Power Plants: A Mini-Review

作者：Binsheng Liao, Xianyang Zeng, Zhongqian Ling, Sanmei Zhao, Bin Li, Xinlu Han · 发表于：Processes · 年份：2025 · DOI：10.3390/pr13040982 · 被引用次数：12 · 研究领域：Membrane Separation Technologies、Membrane-based Ion Separation Techniques、Industrial Gas Emission Control

Zero Liquid Discharge (ZLD) is a wastewater management strategy that eliminates liquid waste while maximizing water use efficiency. This article reviews the primary ZLD technologies used for desulfurization wastewater (DWW) treatment in coal-fired power plants. These technologies include the thermal process and the membrane process. The thermal process includes “concentrated crystallization” technology and “gas evaporation and drying” technology. The paper also highlights recent advances in membrane technology for power plant wastewater treatment. The advantages and limitations of each technique are discussed. Membrane technology is considered a promising solution for wastewater recycling, while thermal technology offers easy operation and maintenance without the need for pretreatment. Finally, the paper outlines possible future directions for the treatment of DWW.