中文摘要：

针对采用传统生物法处理焦化废水时系统停留时间长、除污效率低的现状，将固定化技术引入膜生物反应器（MBR），并开展了处理COD为2598mg／L、氨氮为378mg／L的高浓度焦化废水研究。结果表明：其对COD的去除率为98．7％，对氨氮的去除率为95．03％，出水水质达到了国家一级排放标准；冲击负荷对反应器的处理效果影响较小，厌氧段的反应时间宜为14h，好氧段的较佳反应时间为10h；pH值为7．5～8、5时对氨氮能保持较高的降解率；好氧段应保持较高的溶解氧浓度，反应8h后宜减少曝气量以降低能耗；在反应器长期运行的过程中膜通量的衰减速度较慢，运行30d后膜通量下降了37．2％，且用水冲洗就可使膜通量得到基本恢复。

英文摘要：

In order to reduce the long retention time and improve pollutant removal efficiency of the traditional biological process in coking wastewater treatment, the immobilized-cell membrane bioreactor was adopted for treating the coking wastewater with COD of 2 598 mg/L and NH4^＋ - N of 378 mg/L. The results show that the removal rates of COD and NH4^＋ - N are 98.7% and 95.03% respectively. The effluent quality reaches the national first class discharge standard. Furthermore, the shock load has a slight effect on the process. The optimal anaerobic and aerobic times are 14 h and 10 h respectively. When pH is 7.5 to 8.5, the removal efficiency of NH4^＋ - N shows improvements. The DO should be maintained at a high level in the aerobic zone, and after 8 h, the aeration rate should be gradually declined. The reduction rate of membrane flux is much lower during the long-term operation, and after operation for 30 d, the membrane flux lowers by 37.2%. The membrane permeability is regained by simply cleaning the membrane with tap water.