[1]侯森,马翠,贾胜勇,等.牛粪炭@Fe3O4催化臭氧处理煤气化废水的特性实验[J].华侨大学学报(自然科学版),2019,40(3):356-362.[doi:10.11830/ISSN.1000-5013.201902009]
　HOU Sen,MA Cui,JIA Shengyong,et al.Study on Treatment of Coal Gasification Wastewater by Catalytic Ozonation of Cow-Dung Based Activated Carbon@Fe3O4[J].Journal of Huaqiao University(Natural Science),2019,40(3):356-362.[doi:10.11830/ISSN.1000-5013.201902009]
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牛粪炭@Fe3O4催化臭氧处理煤气化废水的特性实验()
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《华侨大学学报（自然科学版）》[ISSN:1000-5013/CN:35-1079/N]

卷:
第40卷
期数:
2019年第3期
页码:
356-362
栏目:
出版日期:
2019-05-20

文章信息/Info

Title:
Study on Treatment of Coal Gasification Wastewater by Catalytic Ozonation of Cow-Dung Based Activated Carbon@Fe3O4
文章编号:
1000-5013(2019)03-0356-07
作者:
侯森;  马翠;  贾胜勇;  何争光
郑州大学 水利与环境学院, 河南 郑州 450001
Author(s):
HOU Sen;  MA Cui;  JIA Shengyong;  HE Zhengguang
School of Water Resources and Environment, Zhengzhou University, Zhengzhou 450001, China
关键词:
高级臭氧氧化;  羟基自由基;  煤气化废水;  化学需氧量去除率;  UV254去除率
Keywords:
advanced ozonation;  hydroxyl radical;  coal gasification wastewater;  chemical oxygen demand removal rate;  UV254 removal rate
分类号:
X703
DOI:
10.11830/ISSN.1000-5013.201902009
文献标志码:
A
摘要:
采用催化臭氧氧化工艺处理煤气化废水生化出水.以廉价牛粪为原料制作生物活性炭,通过共沉淀法制得磁性催化剂牛粪炭@Fe3O4,并研究pH值、臭氧及催化剂投加量对催化效果的影响.实验结果表明:在臭氧体积流量为0.6 L·min-1,质量浓度为4.45 mg·L-1,催化剂投加量为2 g·L-1,初始pH值为7.2的条件下,化学需氧量(COD),UV254的去除率分别达到72.4%,91.4%.利用三维荧光光谱(3D-EEM)和5日生化需氧量(BOD5)测定分析,催化臭氧体系对废水中的有机物质具有良好的去除效果,出水可生化性显著提升.利用电子顺磁共振波谱仪(EPR)检测分析,牛粪炭@Fe3O4可以促进催化臭氧化体系·OH的产生.
Abstract:
The catalytic ozonation process was used to treat the biological pretreated coal gasification wastewater. The bioactive carbon was made from cheap cow dung. And the magnetic catalyst cow-dung based activated carbon@Fe3O4 was prepared by co-precipitation method. The effects of pH value, ozone and catalyst dosage on the catalytic performance were studied. The results showed that chemical oxygen demand(COD)and UV254 removal rate reached at 72.4% and 91.4% respectively under the conditions of ozone inlet rate 0.6 L·min-1, ozone concentration 4.45 mg·L-1, catalyst dosage 2 g·L-1 and initial pH value 7.2. The results of three dimensional-excitation matrix fluorescence spectroscopy(3D-EEM)and five-day biochemical oxygen demand(BOD5)showed that the catalytic ozone system had a good removal effect on the organic matter in wastewater, and the biodegradability of effluent was significantly improved. Electron paramagnetic resonance spectrometer(EPR)test confirmed that cow-dung based activated carbon@Fe3O4 could improve the effect of ozone treatment by promoting the production of ·OH.

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备注/Memo

备注/Memo:
收稿日期: 2019-02-18
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、新工艺和新材料的开发的研究.E-mail:hezhengguang163@163.com.
基金项目: 国家十三五水专项(2017ZX07602-001-002)
更新日期/Last Update: 2019-05-20