摘要： 采用Fe/C微电解-Fenton法对锂电池阴极材料生产中产生的高浓度废水进行预处理实验。通过正交和单因素实验，结合GC-MS分析，确定各参数的最佳反应条件值。实验结果表明，控制铁碳比为3∶1，铁屑投加量为150 g/L，pH=3，反应时间为60 min时，运用Fe/C微电解可以对锂电池阴极生产废水COD的去除率达到46%左右；以Fe/C微电解出水为基础，调节进水pH=3、H₂O₂（30%）投加量为2 mL/L、反应时间为60 min时，在室温下对原水COD的去除率为71%左右。B/C也由0.11提高到0.45，废水的可生化性大大提高。同时通过GC-MS进一步验证，确定Fe/C微电解-Fenton组合工艺对NMP（N-甲基吡咯烷酮）具有较好的降解作用。

关键词: Fe/C微电解, Fenton法, 锂电池阴极生产废水

Abstract: The pre-treatment experiments on Fe-C micro-electrolysis-Fenton method has been used for pre-treating the highly concentrated wastewater from Li battery cathode material production. By orthogonal and single factor tests, combined with GC-MS analysis,the optimum reaction conditional values for every parameter assured. The results show that the COD removing rate of the wastewater from lithium batter cathode production by FeC micro-electrolysis method reaches about 46%,when the ratio of Fe/C is 3:1,iron scrap dosage 150 g/L,pH value 3,and reaction time 60 min. Based on Fe/C micro-electrolysis effluent,the removing rate of raw water COD is about 70% at room tempe-rature,when the influent pH=3,H₂O₂(30%) dosage 2 mL/L,and reaction time 60 min. B/C is also increased from 0.11 to 0.45,and the biodegradability of wastewater greatly improved. In addition,by GC-MS for further verification, it is ascertained that the Fe-C micro-electrolysis-Fenton combined process has good degradation effect on N-methyl pirrolidone(NMP).

Key words: Fe-C micro-electrolysis, Fenton method, wastewater from Li battery cathode production

中图分类号: 

• X703.1