两种异臭化合物β-环柠檬醛和β-紫罗兰酮在氯化过程中消毒副产物的生成及其影响因素  

Formation and Influence Fators of DBPs of Two Odorous Compounds β-Cyclocitral and β-Ionone during Chlorination Process

作　　者：郑旭辉 安娜[1] 高乃云[1] 吴敏[1] 徐斌[1] ZHENG Xuhui;AN Na;GAO Naiyun;WU Min;XU Bin(State Key Laboratory of Pollution Control and Resource Reuse,College of Environmental Science and Engineering,Tongji University,Shanghai 200092,China)

机构地区：[1]同济大学环境科学与工程学院污染控制与资源化研究国家重点试验室

出　　处：《净水技术》2020年第1期52-57,74,共7页Water Purification Technology

基　　金：国家自然基金(51608372);国家“十三五”水专项(2017ZX07207004)

摘　　要：以两种异臭化合物β-环柠檬醛和β-紫罗兰酮作为前体物,进行氯化试验。研究两种前体物在25℃恒温黑暗条件氯化24 h后消毒副产物(DBPs)的生成及影响因素。试验结果表明,β-环柠檬醛和β-紫罗兰酮氯化后均会生成三氯甲烷(TCM)、二氯乙醛(DCAL)、三氯乙醛(TCAL)、二氯丙酮(DCP)和三氯丙酮(TCP),且加氯量、pH和腐植酸浓度均会影响两种前体物氯化后消毒副产物的生成量。两种前体物的试验结果有一定的相似性,随着加氯量的增加,TCM、DCP、TCP的生成量均增加;随着pH的增大,TCM的生成量增加,DCP和TCP的生成量减少,碱性条件会抑制DCAL的生成,而酸性条件会抑制TCAL的生成;随着腐植酸浓度的增加,TCM的生成量增加。Taking β-cyclocitral and β-ionone as precursors,chlorination of two odorous compounds was investigated.Formation and influence factors of disinfection by-products(DBPs)of two odorous compounds after chlorination in a dark condition at 25℃ for 24h were studied.The results showed thatβ-cyclocitral andβ-ionone were transformed into trichloromethane(TCM),dichloroacetaldehyde(DCAL),trichloroacetaldehyde(TCAL),dichloropropanone(DCP),trichloropropanone(TCP).The formation of DBPs during the chlorination of two odorous compounds was influenced by chlorine dosage,pH value and the concentration of humic acid.Some similarities between two precursors were studied.The amount of TCM,DCP and TCP increased with the increasing of chlorine dosage.The amount of TCM increased and the amount of DCP and TCP decreased with the increasing of pH value,and alkaline condition inhibited the formation of DCAL,while acidic condition inhibited the formation of TCAL.Besides,the amount of TCM increased with the increasing of the concentration of humic acid.

关 键 词：异臭化合物 β-环柠檬醛 Β-紫罗兰酮 消毒副产物 前体物 

分 类 号：TU991[建筑科学—市政工程]