UASB-膜生物反应器处理抗生素废水的研究

采用UASB-膜生物反应器对抗生素废水进行处理研究。结果表明,UASB具有很强的抗冲击能力,当UASB和膜生物反应器的容积负荷分别为10.9kgCOD/m3·d和4.62kgCOD/m3·d时,系统COD去除率仍有96.47%。污泥浓度对膜生物反应器的COD去除率有较大影响,当MLSS保持在3000～4000mg/L时,膜生物反应器COD去除率为85%左右,高于MLSS保持在7500～7800mg/L时为68%左右。在不排泥运行时膜生物反应器中MLVSS和MLSS比值比排泥运行时低。

Treatment of Antibiotic Wastewater with UASB and Membrane Bioreactor

Antibiotic wastewater was treated by using UASB membrane bioreactor (MBR). Results showed that UASB had high ability of resisting impingement. When capacity load of UASB and MBR was 10.9 kgCOD/m3·d and 4.62 kgCOD/m3.d respectively, COD removal in the system was 96.47%. MLSS was found to have obvious effect on COD removal of MRB. When MLSS was 3000～4000mg/L, COD removal efficiency of MBR was about 85%, higher than that about 68% when MLSS was 7500～7800mg/L. The ratio of MLVSS and MLSS in MBR with the condition of undischarged sludge was lower than that with the condition of discharged sludge.