Research About the Corosive Effects of FeCl3 in the Aeration Wastewater Basin

9th International Conference on Tribology

Panaitescu, C.^1 ; Petrescu, M.G.^2

Petroleum-Gas University of Ploiesti, Department of Petroleum Refining and Environmental Protection, Ploiesti

100680, Romania^1

Petroleum-Gas University of Ploiesti, Department of Mechanical Engineering, Ploiesti

100680, Romania^2

关键词: Aeration system;    Chemical reagents;    Coagulation/flocculation;    Corrosion process;    Degree of corrosion;    FeCl3;    Industrial wastewaters;    International standards;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/295/1/012039/pdf
DOI  :  10.1088/1757-899X/295/1/012039

来源: IOP

【 摘 要 】

Biological aeration of industrial wastewater is a very impressive process in the treatment of wastewater. The involvement of chemical reagents in this process, however, implies the intensification of the corrosion processes due to both pollutants in the wastewater and the chemical reactions that occur when the coagulation / flocculation reagents are added. This paper explores the action of ferric chloride (FeCl3) on metallic parts in the aeration basin. The most affected structures are metal. At the classical basins the aeration systems were made of P295GH materials. The corrosion produced is uneven. The analysis of the high degree of corrosion was done according to the national and international standards. Finally, the paper supports the replacement of the existing aeration system with an anticorrosive material.