Research on the Drinking - and Waste - Water Treatment with Adsorptive Ozonation for its Practical Use

吸附式臭氧氧化处理饮用水和废水的研究及其实用化

• 批准号: 16310052
• 负责人: SAKODA Akiyoshi
• 金额: $ 9.22万
• 依托单位: University of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2004
• 资助国家: 日本
• 起止时间: 2004 至 2005
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-16310052/
• 关键词: ozone; adsorption; zeolite; water treatment; 浄水処理; 排水処理

A model experiment revealed that the adsorptive ozonation using USY zeolite enhanced the phenol decomposition by means of the adsorptive concentration of phenol into USY micropores. And the oxidation of coexisting Br- was not enhanced, suggested that the selective ozonation of phenol is possible by adsorptive ozonation using USY zeolite. While, the ozonation rate was decreased for phenol dissolved in river water. Furthermore, the phenol adsorption capacity was decreased with increase in total river water loading for the USY-packed bed.The breakthrough characteristics of 2-methylisoborneol (2-MIB) for USY zeolite packed bed was also investigated. The results suggested that the coexisting of river water shortened the breakthrough time of 2-MIB. And this shortening effect was decreased by the ozonation of river water.Batch adsorption experiment using river water suggested that the trihalomethane formation potential (THMFP) dissolved in river water adsorbed on USY zeolite.The long-term adsorptive ozonation treatment experiment using river water suggested that the adsorptive ozonation using USY was effective for decomposition of THMFP and fulvic acid like compounds dissolved in river water. And the deterioration of the decomposition activity with time elapsed was also observed.

模拟实验表明，USY沸石吸附臭氧氧化通过USY微孔对苯酚的吸附富集，促进了苯酚的降解。同时，对共存的Br-的氧化没有增强作用，表明USY沸石对苯酚的选择性臭氧氧化是可能的。臭氧对河水中溶解态苯酚的氧化速率降低。研究了USY沸石填充床对2-甲基异山梨醇（2-MIB）的穿透特性。结果表明，河水的存在缩短了2-MIB的穿透时间。静态吸附实验表明，USY沸石对溶解于河水中的三卤甲烷生成势（THMFP）具有良好的吸附作用;长期吸附臭氧化实验表明，USY沸石对溶解于河水中的THMFP和富里酸类化合物具有良好的吸附作用。并且还观察到分解活性随时间流逝而劣化。