UASB-好氧膜生物反应器组合工艺处理抗生素废水

Treatment of Antibiotic Wastewater by Combinatorial Technique of UASB-Aerobic Membrane Bioreactor

采用厌氧-好氧膜-生物反应器对抗生素废水进行了处理研究.实验结果表明,当UASB的水力停留时间为13 h、好氧膜生物反应器的水力停留时间为7.5 h时,处理效果最好,出水COD去除率达88.13%.膜对COD的去除有强化作用,保证系统稳定高效地运行.好氧膜生物反应器内污泥浓度也随着水力停留时间的增加而相应地增加.另外膜通量下降较严重,物理清洗和化学清洗可基本恢复膜的通量.

Wastewater treatment was tested with a combinatorial technique of UASB-aerobic membrane bioreactor. The results Show that, when the HRT of UASB is 13 h and the HRT of aerobic membrane Bioreactor is 7.5 h, the removal efficiency is better, and the COD removal rate reaches 88.13%. Membrane for the COD removal rate ensures steady running of the system with high efficiency. Concentration of MLSS in aerobic membrane Bioreactor is increased when the HRT becomes longer. The result, however, also indicates that flux drops rapidly, and flux can be recovered after physical and chemical washing.