摘要
以2-甲基异茨醇(MIB)为典型嗅味物质的代表物,采用单独臭氧氧化去除水体中嗅味物质.考察臭氧去除MIB的效能及其影响因素.结果表明,臭氧可以有效地去除水体中痕量MIB.随着水体pH增加,O3对MIB的去除率大幅度增加,同时臭氧对MIB的去除率不受MIB初始质量浓度的影响;羟基自由基抑制剂(叔丁醇和重碳酸盐)能够抑制臭氧对MIB的氧化效果.这一结果表明,在O3氧化水中MIB过程中,除O3分子氧化MIB外,O3在水中自分解产生具有强氧化性的羟基自由基(HO.)具有协同氧化作用;通过对以蒸馏水为本底和以松花江江水为本底所配置MIB水样氧化效能的比较,发现臭氧可以作为一种有效的氧化剂,对天然水体中嗅味物质MIB进行氧化去除.
2 -Methylisoborneol, a representative taste and odor compound, was selected to degradate by ozone in drinking water treatment. The efficiency and influence factors were studied. Ozonation can remove MIB effectively. The removed percents of MIB by ozone increased with pH increasing. At the same time, the removal efficiency of MIB was not affected by the initial concentration of MIB. The inhibitor （ bicarbonate and t- BuOH） can restrain the removal efficiency. This result showed that MIB was oxidized by HO - generated from O3 decomposition except for the direct ozonation. Compared the different water qualities on ozonation of MIB, ozone can be considered as an effective oxidant for preoxidating MIB which existed in the natural water.
出处
《哈尔滨工业大学学报》
EI
CAS
CSCD
北大核心
2007年第10期1583-1586,共4页
Journal of Harbin Institute of Technology
基金
国家自然科学基金资助项目(50008004)
哈尔滨工业大学特聘教授骨干梯队资助项目
