环境工程学报2025，Vol.19Issue(4)：815-823,9.DOI:10.12030/j.cjee.202405116
芬顿氧化技术同步降解典型嗅味物质2-MIB和GSM效果
Simultaneous degradation of typical odor substances 2-MIB and GSM by Fenton oxidation technology
摘要
Abstract
In response to the frequent occurrence of odor substances in drinking water sources,to effectively meet the strict requirements for typical odor substances 2-methylisoborneol(2-MIB)and geosmin(GSM)under the new national standard background(≤10 ng·L-1),the study systematically investigated the simultaneous degradation and risk control effects of Fenton oxidation technology on 2-MIB and GSM,including researches on influencing factors,degradation kinetics analysis,and exploration of actual water source treatment effects.Results from simulated water and actual water source experiments both demonstrated that Fenton oxidation technology could rapidly and efficiently degrade and remove 2-MIB and GSM simultaneously.When the concentrations of 2-MIB and GSM were 100 ng·L-1,under the reaction conditions of a relatively loose initial solution pH(5.0±0.2),low Fe2+dosing concentration(2.0 mg·L-1)and Fe2+∶H2O2 molar ratio(1∶2),Fenton oxidation technology could achieve simultaneous control of odor substances below 10 ng·L-1 within 5 minutes.After 20 minutes of reactions,the degradation rates of 2-MIB and GSM in water could reach as high as 97.1％and 98.2％,respectively,effectively controlling the risk of odorants.The degradation process involved a series of reactions such as dehydration,addition,dehydrogenation,demethylation,and ring opening.Results of actual water source treatment from seven reservoirs showed that Fenton oxidation technology could effectively control the high concentrations of 2-MIB and GSM(concentration range 80～125 ng·L-1)in raw water below 10 ng·L-1.Due to the influence of co-existing substances in raw water,the demand for its chemicals increased(Fe2+dosing concentration required to be 3.0 mg·L-1).关键词
芬顿氧化技术/2-MIB/GSM/影响因素/降解机理/实际水源Key words
fenton oxidation technology/2-MIB/GSM/influencing factors/degradation mechanisms/actual water source分类
环境科学引用本文复制引用
闫韫,宋洪星,梁恬哲,董文艺,王宏杰,韩琦..芬顿氧化技术同步降解典型嗅味物质2-MIB和GSM效果[J].环境工程学报,2025,19(4):815-823,9.基金项目
深圳市科技计划资助项目(JCYJ20220531091403007) （JCYJ20220531091403007）
