用自制的滚压振动磨对活性炭进行研磨, 观察研磨后活性炭的形貌、比表面积和孔径; 用铁碳微电解法对生活污水进行处理, 研究污水pH值、铁碳质量比、反应时间、H2O2加入量对降低COD的影响。结果表明: 活性炭经研磨处理后, 粒径减小到1~2 μm, 比表面积增加了27%; 在铁碳质量比为1∶1、污水pH值为3.0、H2O2加入量为400 mg·L-1、反应时间为180 min时, COD的降低率最高, 达70%以上, 优于未研磨活性炭的; 去除反应符合一级反应动力学规律。

The active carbon (AC) was grinded by self-made rolling vibromill, and the morphology, specific surface area and pore diameter of the grinded AC were observed. The domestic sewage was treated by iron-carbon microelectrolysis and the influences of sewage pH value, mass ratio of iron and carbon, reaction time and H2O2 dosage on COD removal rate were studied. The results show that the grain diameter decreased to 1-2 μm and specific surface area increased by 27% after AC was grinded. The COD removal rate could surpass 70% ,which was superior to that of unground AC surface, when sewage pH value was 3.0, H2O2 dosage was 400 mg·L-1 and reaction time was 180 min. The COD removal mode conformed to first order reaction kinetics rule.