权益分类	功能权益	普通用户	{{item.name}}会员
{{category.name}}	{{benefitItem.name}}

バイオフェントン反応を用いた微量有害物質除去に関する研究

生物芬顿反应去除微量有害物质的研究

基本信息

批准号：
13J00767
负责人：
稲垣嘉彦
金额：
$ 1.22万
依托单位：
Waseda University
依托单位国家：
日本
项目类别：
Grant-in-Aid for JSPS Fellows
财政年份：
2013
资助国家：
日本
起止时间：
2013-04-01 至 2015-03-31
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-13J00767/
关键词：
植生浄化技術難分解性物質人工湿地

项目摘要

The possibility of heterogeneous iron catalysts as iron source in bio-Fenton process was studied as well as the application of the process to a pilot-scale constructed wetland in Thailand. As a result, heterogeneous iron catalysts were successfully applied to biological Fenton (bio-Fenton) process in laboratory study; however, this process did not work well in a pilot-scale constructed wetland. Further study will be needed to investigate the optimum conditions for actual wastewater treatment.Iron materials such as colloidal ferrihydrite, ferric ion-exchanged zeolite and magnetite particles were used for this study. A fluorescence probe was used to identify the formations and reaction sites of OH radicals in bio-Fenton process. Strong fluorescence was observed in surface parts in roots of plants. Moreover, in the laboratory batch experiments, a trace organic pollutant was quickly removed after addition of solid iron materials. In field experiments, mefenamic acid and N,N’-diethyl-m-toluamide were selected as target compound because they have been detected in relatively high concentrations. Even colloidal ferrihydrite solution was injected into the wetland, the removals could not be achieved. In addition, no clear relation between consumption of hydrogen peoxide in plants and removals of PPCPs was obtained. Batch experiments using actual wastewater were conducted to confirm that the target PPCPs could be treated. Although a significant decrease of the concentration was observed, it is hard to say the process was effective.

研究了非均相铁催化剂作为生物芬顿工艺中铁源的可能性以及该工艺在泰国中试规模的人工湿地中的应用。结果，多相铁催化剂在实验室研究中成功应用于生物芬顿（bio-Fenton）工艺；然而，这一过程在试点规模的人工湿地中效果不佳。需要进一步研究来调查实际废水处理的最佳条件。本研究使用了胶体水铁矿、三价铁离子交换沸石和磁铁矿颗粒等铁材料。荧光探针用于识别生物芬顿过程中OH自由基的形成和反应位点。在植物根部的表面部分观察到强荧光。而且，在实验室批量实验中，添加固体铁材料后，微量有机污染物很快被去除。在现场实验中，选择甲芬那酸和N,N'-二乙基间甲苯甲酰胺作为目标化合物，因为它们的浓度相对较高。即使将胶体水铁矿溶液注入湿地，也无法实现去除。此外，植物中过氧化氢的消耗量与 PPCP 的去除量之间没有明确的关系。使用实际废水进行批量实验，以确认目标 PPCP 可以得到处理。尽管观察到浓度显着降低，但很难说该过程是有效的。