A review on treatment of disinfection byproduct precursors by biological activated carbon process  

作　　者：Jie Fu Ching-Hua Huang Chenyuan Dang Qilin Wang 

机构地区：[1]School of Environmental Science and Engineering,Huazhong University of Science and Technology,Wuhan 430074,China [2]School of Civil and Environmental Engineering,Georgia Institute of Technology,Atlanta,GA 30332,United States [3]Center for Technology in Water and Wastewater,School of Civil and Environmental Engineering,University of Technology Sydney,Sydney,New South Wales 2007,Australia

出　　处：《Chinese Chemical Letters》2022年第10期4495-4504,共10页中国化学快报（英文版）

基　　金：the support by National Natural Science Foundation of China(Nos.91851110 and41701541);Hubei Provincial Natural Science Foundation of China(No.2020CFA106)。

摘　　要：Disinfection by-products(DBPs)in water systems have attracted increasing attention due to their toxic effects.Removal of precursors(mainly natural organic matter(NOM))prior to the disinfection process has been recognized as the ideal strategy to control the DBP levels.Currently,biological activated carbon(BAC)process is a highly recommended and prevalent process for treatment of DBP precursors in advanced water treatment.This paper first introduces the fundamental knowledge of BAC process,including the history,basic principles,typical process flow,and basic operational parameters.Then,the selection of BAC process for treatment of DBP precursors is explained in detail based on the comparative analysis of dominant water treatment technologies from the aspects of mechanisms for NOM removal as well as the treatability of different groups of DBP precursors.Next,a thorough overview is presented to summarize the recent developments and breakthroughs in the removal of DBP precursors using BAC process,and the contents involved include effect of pre-BAC ozonation,removal performance of various DBP precursors,toxicity risk reduction,fractional analysis of NOM,effect of empty bed contact time(EBCT)and engineered biofiltration.Finally,some recommendations are made to strengthen current research and address the knowledge gaps,including the issues of microbial mechanisms,toxicity evaluation,degradation kinetics and microbial products.

关 键 词：Disinfection byproduct precursor Biological activated carbon Formation potential Natural organic matter Empty bed contact time OZONATION 

分 类 号：TU991.2[建筑科学—市政工程] TQ424.1[化学工程]