Trace organic contaminants abatement by permanganate/bisulfite pretreatment coupled with conventional water treatment processes: Lab- and pilot-scale tests

Jie Chen; Jinfeng Ling; Bo Sun; Jian Wang; Baoxue Zhou; Xiaohong Guan; Yuankui Sun

doi:10.1016/j.jhazmat.2020.123380

Trace organic contaminants abatement by permanganate/bisulfite pretreatment coupled with conventional water treatment processes: Lab- and pilot-scale tests

J Hazard Mater. 2021 Jan 5:401:123380. doi: 10.1016/j.jhazmat.2020.123380. Epub 2020 Jul 6.

Authors

Jie Chen¹, Jinfeng Ling¹, Bo Sun², Jian Wang³, Baoxue Zhou⁴, Xiaohong Guan⁵, Yuankui Sun⁶

Affiliations

¹ State Key Laboratory of Pollution Control and Resources Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, PR China.
² Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environment Science & Engineering, Shandong University, Qingdao, 266237, PR China.
³ Yixing Water Group, Wuxi, Jiangsu, 214200, PR China.
⁴ Shanghai Institute of Pollution Control and Ecological Security, Shanghai, 200092, PR China; School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, PR China.
⁵ State Key Laboratory of Pollution Control and Resources Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, PR China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai, 200092, PR China; International Joint Research Center for Sustainable Urban Water System, Tongji University, Shanghai, 200092, PR China.
⁶ State Key Laboratory of Pollution Control and Resources Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, PR China; Shanghai Institute of Pollution Control and Ecological Security, Shanghai, 200092, PR China; International Joint Research Center for Sustainable Urban Water System, Tongji University, Shanghai, 200092, PR China. Electronic address: yksun03@163.com.

PMID: 32763684
DOI: 10.1016/j.jhazmat.2020.123380

Abstract

Bisulfite-activated permanganate (PM/BS) process has proven to be a promising method for trace organic contaminants (TrOCs) abatement. However, to our knowledge, most previous studies on PM/BS process were limited in synthetic water at lab-scale. Hence, the performance of TrOCs abatement by PM/BS process was investigated in real waters in this study, and for the first time, its feasibility as a pretreatment process was evaluated at pilot-scale. The lab-scale results indicated that almost all tested TrOCs could be completely removed from pure water, while their removal efficiencies varied widely from ∼20 % to ∼90 % in real waters. Correlation analysis suggested that TrOCs abatement decreased linearly with increasing concentration of dissolved organic matter (DOM) and halide ions in real waters. The TrOCs with electron-donating groups were more likely to be decomposed in PM/BS process. The PM/BS pretreatment produced MnO₂ and decreased the aromatic signal of the DOM, which enhanced the removal of DOM during subsequent coagulation-sedimentation processes. Comparing with ozonation, chlorination, and permanganate processes, PM/BS process showed some advantages in terms of TrOCs abatement and operating costs. Furthermore, the pilot-scale experiment confirmed that PM/BS process combined with traditional water treatment processes could achieve excellent TrOCs abatement (greater than 84%).

Keywords: Bisulfite; Permanganate; Pretreatment; Real water; Trace organic contaminants.

Publication types

Research Support, Non-U.S. Gov't