MBR中好氧颗粒污泥的培养及其性能研究

Aerobic granular sludge cultivation in MBR and its performance research

以实际生活污水接种絮状活性污泥在膜生物反应器中培养好氧颗粒污泥。通过对3个培养阶段污泥生长情况的考察,研究了颗粒污泥的变化规律及特性,并对好氧颗粒污泥的处理效果进行了分析。该系统连续运行4个月的结果表明,在膜生物反应器中成功培养出了运行比较稳定的好氧颗粒污泥,且系统处于稳态时好氧颗粒污泥对COD、氨氮、总氮、总磷的质量浓度分别为400～1 000、25～40、30～50、10～15 mg/L的生活污水其平均去除率分别达到95%、80%、70%和65%。

Aerobic granular sludge was cultivated in MBR through seeding flocculent activated sludge with aclual domestic sewage. With the investigation of the sludge growth in the three cultivation stages, the change regulation of the granular sludge and its property were studied, moreover, the treatment effect of the aerobic granular sludge was analyzed. After 4-month continuous operation, aerobic granular sludge with steady property was successfully cultivated in MBR, for the domestic sewage whose mass concentration of COD, ammonia-nitrogen, total nitrogen and total phosphorus were 400 - 1000, 25-40, 30-50 and 10 - 15 mg/L respectively, the removal rates of the above pollutants by the aerobic granular sludge reached 95%, 80%, 70% and 65% respectively when the system was in steady state.