Pretreatment of aluminium alloy milling wastewater by micro-electrolysis process

2019 3rd International Workshop on Renewable Energy and Development

能源学;生态环境科学

Li, Ru^1 ; Huang, Xin^1 ; Gu, Junli^1

Department of Resources and Civil Engineering, Northeastern University, ShenYang, LiaoNing

110819, China^1

关键词: Alkaline wastewater;    Dynamic equations;    Ecological environments;    Electrolysis process;    First-order kinetic models;    Harmless treatments;    Kinetic analysis;    Removal rate of cods;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/267/3/032086/pdf
DOI  :  10.1088/1755-1315/267/3/032086

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

The aluminium alloy milling wastewater belongs to high concentration organic alkaline wastewater, the pH value is up to 13-14, and the COD concentration is 3000mg/L-3300mg/L, if direct discharge into water bodies without harmless treatment can seriously endanger the ecological environment and human health. In this study, the micro-electrolysis process was used to pre-treat the aluminium alloy milling wastewater, and the COD removal rate was the indicator. Under the condition that the mass ratio of iron to carbon is 1:2, the dosage of iron is 67g/L, the pH is 3, and the reaction time is 60min, the average removal rate of COD in aluminium alloy milling wastewater can reach 71.34%. The kinetic analysis of the process of pre-treatment of aluminium alloy milling wastewater by micro-electrolysis process is in accordance with the first-order kinetic model. The dynamic equation is: Ct=C0 exp (-3.576C0-0.6351t).