Abstract: The change in surface morphology，functional group content，specific surface area and hydrophilicity of active carbon being modified with chemical oxidation-Fe³⁺ covering technique or HF treatment was studied with chemical analysis and surface morphology analysis. Results showed that the modified active carbon treated by chemical oxidation-Fe³⁺ covering technique has more uniform and closer pore size distribution with ordered honeycomb structure. The number of acid functional groups，specific surface area and equilibrium moisture content get increased with 0.116 meq/g，415.80 m²/g and 19.28%，respectively. Two groups of rotating biodisk (ⅠandⅡ) were prepared respectively by the above two methods and used to treat oilfield sewage for comparing the biofilm forming performance. The microbial content and biofilm dry weight of rotary-Ⅱ were measured as 2.60×10⁹ cfu/g and 16.9096 g/m²，respectively. The COD removal rates of three level biodisks were all above 80%，the highest rate reached to 92.36% under the conditions of rotary speed 4 r/min，water temperature 20^oC，HRT 6h and pH 6—8. The COD removal efficiency of biodisk-Ⅱ is better that of biodisk-Ⅰ.

摘要： 借助化学分析、表面形态分析等表征方法，研究了经化学氧化-铁离子覆盖技术和氢氟酸处理后活性炭（AC）的表面形貌、表面官能团含量、比表面积及其亲水性的变化情况。结果表明，采用化学氧化-铁离子覆盖技术改性处理后的活性炭同未处理的活性炭相比，其表面孔径分布均匀、细密，孔结构呈规则的蜂窝形状，酸性官能团含量增加0.116 meq/g，比表面积增加415.80 m²/g，平衡含水率增加19.28%。将两种表面氧化处理过的活性炭分别制作成两组生物转盘Ⅰ、Ⅱ，用其来处理油田污水，对比分析两种改性方法对生物转盘挂膜性能的影响，转盘Ⅱ微生物含量为2.60×10⁹ cfu/g，生物膜干重达到16.9096 g/m²，在盘片转速4 r/min、水温20 ^oC、水力停留时间（HRT）为6 h、pH值为6~8时，三级生物转盘各级化学需氧量（COD）去除率均在80%以上，最高达到了92.36%，并且生物转盘Ⅱ的去除效果好于转盘Ⅰ。