• 关键词：电  磁生物载体  好氧膜生物反应器  萘  菲

• 基金项目：国家科技重大专项(No. 2009ZX07211-005);湖南省教育厅开放基金(No.10k064)

• 江栋
• 1. 环境保护部华南环境科学研究所, 广州 510655;
  2. 广东省水与大气污染防治重点实验室, 广州 510655;
  3. 国家环境保护水环境模拟与污染控制重点实验室, 广州 510655

• 刘永
• 1. 环境保护部华南环境科学研究所, 广州 510655;
  2. 广东省水与大气污染防治重点实验室, 广州 510655;
  3. 国家环境保护水环境模拟与污染控制重点实验室, 广州 510655

• 邓志毅
• 湘潭大学环境工程系, 湘潭 411105

• 陈思莉
• 1. 环境保护部华南环境科学研究所, 广州 510655;
  2. 广东省水与大气污染防治重点实验室, 广州 510655;
  3. 国家环境保护水环境模拟与污染控制重点实验室, 广州 510655

• 翁威
• 湘潭大学环境工程系, 湘潭 411105

• 摘要：采用新型电磁-好氧膜生物反应器(Electromagnetic Aerobic Membrane Bioreactor, EMAMBR)处理达标印染尾水中微量多环芳烃类污染物—萘、菲,比较了好氧MBR(Aerobic Membrane Bioreactor)、电-好氧(Electric Aerobic Membrane Bioreactor)和EMAMBR 3种体系的降解效果,探讨了电流强度、HRT和初始pH对EMAMBR降解尾水中萘、菲的影响,初步分析了萘、菲的降解途径.结果表明:与其它两个体系相比,EMAMBR对尾水中萘、菲的平均去除率可提高30%~60%;适当增加电流强度和水力停留时间均能提高对萘、菲的处理效果;在电流强度I、尾水pH和HRT分别为20 mA、6.5~7.5和4 h条件下,EMAMBR对尾水中萘(2.77~4.75 μg·L^-1)和菲(2.0~8.0 μg·L^-1)的降解率均在75%以上,出水中总PAHs浓度满足《生活饮用水卫生标准》(GB 5749—2006)的要求.萘的降解是由水杨酸途径,菲的降解则是由邻苯二甲酸和水杨酸两种途径来实现的.

• Abstract：A novel electromagnetic aerobic membrane bioreactor (EMAMBR) was developed to remove trace naphthalene(Nap) and phenanthrene(Phe) in effluent from a printing and dyeing wastewater treatment plant. The performance of the EMAMBR was evaluated by monitoring the degradation efficiency of Nap and Phe compared to conventional aerobic MBR and electro-aerobic MBR. The effects of some parameters such as current strength, hydraulic retention time (HRT) and initial pH on the performance of the EMAMBR were investigated and degradation pathways of the Nap and Phe were proposed based on GC/MS data. The results showed that the EMAMBR could achieve enhanced degradation of Nap and Phe compared with conventional aerobic MBR and electro-aerobic MBR. The average degradation efficiency of Nap and Phe in the EMAMBR were 30%~60% higher than that obtained from the conventional aerobic MBR and electro-aerobic MBR and was improved with the increase of current strength and HRT. Up to 75% Nap(2.77~4.75 μg·L^-1)and Phe (2.0~8.0 μg·L^-1)were degraded at current strength 20 mA, HRT 4 h and pH 6.5~7.5 and the total concentration of Polycyclic Aromatic Hydrocarbons (PAH) in effluent can meet the national drinking water standards(GB 5749—2006). The Nap was degraded via the salicylic acid pathway while Phe was degraded via both salicylic acid and o-phthalic acid pathways.

• Key words：electrolysis  magnetic biological carrier  aerobic membrane bioreactor  naphthalene  phenanthrene

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