【摘要】 研究了膨胀颗粒污泥床(EGSB)的快速启动及其特性,并与上流式厌氧污泥床(UASB)进行了比较。研究结果表明:UASB反应器的启动完成需要45 d,COD最大容积负荷为5 kg/(m3.d),CODCr去除率为80%,EGSB反应器的启动可在25 d内完成,COD容积负荷可达8 kg/(m3.d),CODCr去除率大于90%。在EGSB的启动过程中,颗粒污泥性质变化明显,其平均直径由0.88 mm增加到1.25mm,比产甲烷活性是接种前的4倍。更多还原

【Abstract】 The quick start-up of the laboratory expended granular sludge bed（EGSB） reactor and the characteristics of the granular sludge during start-up were studied,and it was compared with the up-flow anaerobic sludge bed（UASB） reactor.The results showed that the whole start-up of the UASB reactor could be finished in 45 days,and the maximum COD_Cr loading rate was 5 kg/（m³·d） and COD_Cr removal was about 80%.On the other hand start-up of the EGSB reactor could be finished in 25 days,the COD_Cr loading rate was be 8 kg/（m³·d） and COD_Cr removal was larger than 90%.EGSB is better than UASB in the start-up.During start-up of the EGSB,the characteristics of granular sludge change greatly: the average granular diameter increases from 0.88mm to 1.25mm;methanegenic activities of the granular increases up to 4 times large as the seeded sludge.更多还原