Search

Study on Preparation of Coke-making Wastewater Purifying Agent Based on Iron-carbon Micro-Electrolysis Principle

Author(s)

Xiaoyi Liu1, Dongnan Zhao1,*, Jialiu Lei1, Shengqiang Song2

Affiliation(s)

1School of Materials Science and Engineering, Hubei Polytechnic University, Huangshi, Hubei, China 2School of Materials and Metallurgy, Wuhan University of Science and Technology, Wuhan, Hubei, China *Corresponding Author.

Abstract

In light of Chinese goal to achieve carbon neutrality by 2035 and carbon peak by 2060, this study utilizes solid wastes from iron and steel production processes, such as OG sludge, coal ash, and iron oxide scale. These materials are processed in a high-temperature carbon tube furnace with anthracite as a reducing agent and a small amount of binder after compression molding. Reduction at 1350°C and subsequent cooling yields carbon-containing metal pellets with iron content ranging from 70% to 90%, carbon content from 10% to 30%, and porosity at 53.8%. Furthermore, the use of coking wastewater with metal aggregates reduces COD by 40% and increases B/C by 45%. Additionally, this process effectively utilizes iron and carbon-containing dust and other waste resources from steel-making plants during coking wastewater treatment.

Keywords

Double Carbon; Coking Wastewater; Purifying Agent; Iron-carbon Micro-electrolysis; Iron and Steel Production Wastes

References

[1]Cao LW, Zhang SJ, Zhang YZ, et al. Research progress of microelectrolytic fillers. Modern Chemical Industry, 2015, 35(6): 13-17. doi:10.16606/j.cnki.issn0253-4320.2015.06.043. [2]Song ZZ, Li J, Sun J. Research and application status of iron-carbon microelectrolytic fillers. Green Technology, 2017(6): 48-50. doi:10.16663/j.cnki.Iskj.2017.06.016. [3]Han Chen. Study of pore structure on the slow release pattern of β-tricalcium phosphate artificial vertebrae. Shanghai Jiaotong University, 2016. [4]Wang Yibo, Feng Minquan, Liu Yonghong, Li Yaozhong. Research progress of iron carbon microelectrolysis technology in difficult to treat wastewater. Chemical Progress, 2018, 37(08): 3188-3196. [5]Cao Fei. Preparation of novel microelectrolytic filler and its performance study. Zhenjiang: Jiangsu University, 2016. [6]Tian Jinglei, Liu Jinzhe, Li Xuesong. Experiments on enhanced pretreatment of coking wastewater based on microelectrolysis technology. Industrial Water Treatment, 2018, 38(11): 71-73. [7]Li Lingsing, Chen Jida et al. Application and research of iron carbon microelectrolysis technology. Environmental Science and Management. 2017, 42(5): 98-99. [8]HASHIM, M. A., SENGUPTA, B., JAYA NARAYAN SAHU, et al. Remediation technologies for heavy metal contaminated groundwater. Journal of Environmental Management, 2011, 92(10): 2355-2388. [9]Gillham R W, O'Hannesin S F. Enhanced degradation of halogenated aliphatics by zero-valent iron. Ground water, 1994, 32(6): 958-969. [10]Liou Y H, Lo S-L, Lin C-J, et al. Effects of iron surface pretreatment on kinetics of aqueous nitrate reduction. Journal of hazardous materials, 2005, 126(1): 189-194. [11]Ning X, Wen W, Zhang Y, et al. Enhanced dewaterability of textile dyeing sludge using microelectrolysis pretreatment. Journal of Environmental Management, 2015, 161: 181-187. [12]Yang Zhiyong, Zhang Yagang, Zhu Wenjuan, et al. Effective oxidative degradation of coal gasification wastewater by ozonation: A process study. Chemosphere, 2020, 255. [13]Berné F. Physical-Chemical Methods of Treatment for Oil-Containing Effluents. Water Science and Technology, 1982, 14(9-11). [14]Di Wu, Xiaoyun Yi, Rong Tang, et al. Single microbial fuel cell reactor for coking wastewater treatment: Simultaneous carbon and nitrogen removal with zero alkaline consumption. Science of the Total Environment, 2018, 621. [15]Xin Zhou, Gonglei Wang, Zeyang Yin,et al. Performance and microbial community in a single-stage simultaneous carbon oxidation, partial nitritation, denitritation and anammox system treating synthetic coking wastewater under the stress of phenol. Chemosphere, 2020, 243.