The impact of water quality on the formation of halogenated benzoquinones and the adsorption efficiency by activated carbon  

作　　者：Yongjing Wang Song Gao Xinyu Yan Songtao Wang Ruolin Zhang Yan Zhou Lianhai Ren Cheng Li 

机构地区：[1]State Environmental Protection Key Laboratory of Food Chain Pollution Control,Beijing Technology and Business University,Beijing 100048,China [2]Institute of Scientific and Technical Information of China,Beijing 100038,China [3]Institute of Quality Standard and Testing Technology,Beijing Academy of Agriculture and Forestry Sciences,Beijing 100097,China [4]Key Laboratory of Cleaner Production and Integrated Resource Utilization of China National Light Industry,Beijing Technology and Business University,Beijing 100048,China

出　　处：《Journal of Environmental Sciences》2024年第1期693-702,共10页环境科学学报（英文版）

基　　金：supported by the National Natural Science Foundation of China (Nos.51608011 and 42007350);the National Key Research and Development program of China (Nos.2019YFC1906303,2019YFC1906000-4,and 2019YFD1100304);the Natural Science Foundation of Beijing Municipal (No.8202010)。

摘　　要：Halogenated benzoquinones(HBQs)could cause bladder cancer,but there were few related studies on the generation and control.In this study,the impact of different precursors,pH,bromide concentration,and algae-derived organic matters on the formation of HBQs and the removal efficiency by activated carbon were investigated.It was found that the chlorination of bisphenol A produced the most 2,6-dichloro-1,4-benzoquinone(2,6-DCBQ),reaching 14.86μg/L at 1 hr,followed by tyrosine,2-chlorophenol,P-hydroxybenzoic acid,trichlorophenol,and N-methylaniline.The production of 2,6-DCBQ increased first and then decreased from 0 to 36 hr(chlorination doses 0-20 mg/L),indicating that HBQs were unstable in water.Trihalomethanes(THMs)were detected during chlorination,and the concentration increased with prolongation of reaction time.2,6-DCBQ production decreased and 2,6-dibromo-1,4-benzoquinone(2,6-DBBQ)production increased with increment bromide concentration and the bromide promoted the formation of tribromomethane.The production of 2,6-DCBQ decreased with increase of pH,and the maximum production was 141.38μg/L at pH of 5.Microcystis aeruginosa,Chlorella algae cells,and intracellular organic matters(IOM)could be chlorinated as potential precursors for HBQs.The most amount of 2,6-DCBQ was generated from algae cells of Microcystis aeruginosa,followed by Chlorella algae cells,Microcystis aeruginosa IOM,and Chlorella IOM.This study compared the removal efficiency of HBQs by granular activated carbon(GAC)and columnar activated carbon(CAC)under different carbon doses and initial concentrations of HBQs.It was found that the removal efficiency by GAC(80.1%)was higher than that by CAC(51.8%),indicating that GAC has better control for HBQs.

关 键 词：HBQS DBPS Drinking water Algae derived organic matters Activated carbon 

分 类 号：TU991.2[建筑科学—市政工程]