Zero-liquid discharge technologies for desulfurization wastewater: A review. (1st November 2022)

• Record Type: Journal Article
• Authors: An, Wenhao; Zhao, Jun; Lu, Jiangang; Han, Yi; Li, Dong
• Is Part Of: Journal of environmental management. Volume 321(2022)
• Publication Date: 2022-11-01
• Subjects: Desulfurization wastewater -- Zero-liquid discharge -- Bipolar membrane -- Electrodialysis -- Economic analysis; Environmental policy -- Periodicals; Environmental management -- Periodicals; Environment -- Periodicals; Ecology -- Periodicals; 363.705
• DOI: 10.1016/j.jenvman.2022.115953
• Languages: English
• ISSNs: 0301-4797

Abstract

Abstract: Zero-Liquid Discharge (ZLD) has received a lot of attention due to water scarcity and pollution. This article reviews the treatment of desulfurization wastewater in pretreatment, concentration and solidification with the trend of zero-liquid discharge in China. We summarize the advantages, disadvantages, performance, benefits and other characteristics of different ZLD technologies. Membrane-based technology is an effective means of recycling wastewater in ZLD systems. Therefore, we focus on the application of bipolar membrane electrodialysis (BMED) in desulfurization wastewater and high-salt wastewater treatment, discussing its limitations and solutions. In addition, several Chinese ZLD cases and economic analysis are introduced. It is believed that ZLD will become a new trend in desulfurization wastewater treatment in the future. Therefore, exploring new materials and technologies with low cost and high efficiency is the focus of future work. Highlights: Zero-liquid discharge technologies for desulfurization wastewater are compared. The applications of bipolar membrane technology in wastewater treatment are emphasized. Economic analysis of several industrial cases is made.