[1]袁鹏飞,刘亚琦,张寒旭,等.硅藻土负载纳米Fe3O4催化臭氧处理渗滤液膜滤浓缩液混沉出水[J].华侨大学学报(自然科学版),2020,41(2):215-222.[doi:10.11830/ISSN.1000-5013.201911032]
　YUAN Pengfei,LIU Yaqi,ZHANG Hanxu,et al.Nano-Fe3O4/Diatomite Catalytic Ozone Treatment of Leachate Membrane Filtration Concentrate[J].Journal of Huaqiao University(Natural Science),2020,41(2):215-222.[doi:10.11830/ISSN.1000-5013.201911032]
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硅藻土负载纳米Fe3O4催化臭氧处理渗滤液膜滤浓缩液混沉出水()
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《华侨大学学报（自然科学版）》[ISSN:1000-5013/CN:35-1079/N]

卷:
第41卷
期数:
2020年第2期
页码:
215-222
栏目:
出版日期:
2020-03-20

文章信息/Info

Title:
Nano-Fe3O4/Diatomite Catalytic Ozone Treatment of Leachate Membrane Filtration Concentrate
文章编号:
1000-5013(2020)02-0215-08
作者:
袁鹏飞;  刘亚琦;  张寒旭;  何争光
郑州大学 水利科学与工程学院, 河南 郑州 450001
Author(s):
YUAN Pengfei;  LIU Yaqi;  ZHANG Hanxu;  HE Zhengguang
College of Hydraulic Science and Engineering, Zhengzhou University, Zhengzhou 450001, China
关键词:
纳米Fe3O4/硅藻土;  催化臭氧氧化;  膜滤浓缩液;  羟基自由基
Keywords:
nano-Fe3O4/diatomite;  catalytic ozone oxidation;  membrane filtration concentrate;  hydroxyl radicals
分类号:
X703.1
DOI:
10.11830/ISSN.1000-5013.201911032
文献标志码:
A
摘要:
以垃圾渗滤液膜滤浓缩液混沉出水为研究对象,制备硅藻土负载纳米Fe3O4作为催化剂催化臭氧处理浓缩液.考察溶液初始pH值、臭氧体积流量和催化剂投加量对处理效率的影响.结果表明:在溶液初始pH值为7,臭氧体积流量为1.0 L·min-1,催化剂投加量为0.8 g·L-1,反应时间为90 min时,化学需氧量(COD)和UV254去除率分别为67.8%和86.3%.对进出水进行三维荧光光谱(3D-EEM)和气相色谱-质谱联用(GC-MS)分析的结果表明:经催化臭氧氧化处理以后,浓缩液中的腐殖酸、富里酸和色氨酸等难降解物质大幅度减少;烷烃类、酚类和杂环类物质质量分数下降,烷烃类衍生物质量分数上升;硅藻土负载纳米Fe3O4催化臭氧对于浓缩液有着较好的处理效果.
Abstract:
The effluent from the landfill leachate membrane filtration concentrate was used as the research object, and the diatomite-loaded nano-Fe3O4 was prepared as a catalyst to catalyze the ozone treatment concentrate. The effects of initial pH of solution, volumetric flow rate of ozone, and dosage of catalyst on treatment efficiency were investigated. The results showed that when the initial pH of the solution was 7, the volumetric flow rate of ozone was 1.0 L·min-1, the dosage of catalyst was 0.8 g·L-1, and the reaction time was 90 min,the chemical oxygen demand(COD)and UV254 removal rates were 67.8% and 86.3%, respectively. 3D-EEM and GC-MS analyses of the influent and effluent water showed that after the catalytic ozonation treatment, the refractory substances such as humic acid, fulvic acid and tryptophan in the concentrate were greatly reduced; the mass fraction of alkanes, phenols and heterocyclics decreased, while alkane deravatives increased. It is indicated that the diatomite-loaded nano-Fe3O4 catalyzed ozone has a good treatment effect on the concentrate.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期: 2019-11-12
通信作者: 何争光(1963-),教授,博士,博士生导师,主要从事水污染控制理论与技术、水处理高级氧化技术,以及新技术、新工艺和新材料开发的研究.E-mail:hezhengguang163@163.com.
基金项目: “十三五”国家科技重大专项水专项(2017ZX07602-001-002)
更新日期/Last Update: 2020-03-20