摘要
在普通曝气池内加装曝气能量聚集器,将反应池分隔成不同反应区,包括好氧区、膜区、缺氧-厌氧区,构建了新型一体化A2/O-MBR。通过测试不同曝气强度下普通曝气池与一体化A2/O-MBR内流体流速分布,比较2者的曝气能效。结果表明,新型一体化A2/O-MBR的曝气体积流量(3.5 m3/h)为普通曝气池(7.5 m3/h)的0.45倍时,膜区流体流速是普通曝气池的1.5倍;同时,曝气体积流量从3.5 m3/h增至7.5 m3/h,膜区内的流体流速提高有限,使新型一体化A2/O-MBR可选在低曝气强度下运行成为可能,可降低反应器曝气能耗50%以上;曝气能量聚集器可集中普通曝气池的曝气能量用于提高膜区流速和一体化A2/O-MBR反应器的曝气能效。
An aeration energy concentrator was installed in an ordinary aeration tank to separate it into three different reaction zones,as aerobic zone,membrane area,anoxic / anaerobic zone,and in this way,a new integrated A2/O-MBR was presented. The aeration energy efficiency was compared between the ordinary aeration tank and the new integration A2/O-MBR by the liquid velocity distribution test under different aeration intensities. The result showed that the aeration intensity of the new integration A2/O-MBR（3.5 m^3/h） was 0.45 times the ordinary aeration tank（7.5 m^3/h）,while the liquid flow rate in membrane zone was 1.5 times the ordinary aeration tank. Moreover,the aeration intensity increased from 3.5 m^3/h to 7.5 m^3/h while the exaltation of the liquid flow rate in membrane area was limited. Then,the operation of the new integrated A2/O-MBR was possible under low aeration intensity,which could reduce aeration energy consumption by 50%. Therefore the energy efficiency of the integrated A2/O-MBR was improved by the aeration energy concentrator concentrating aeration energy to promote fluid flow rate in the membrane zone.
出处
《水处理技术》
CAS
CSCD
北大核心
2014年第12期79-82,共4页
Technology of Water Treatment
基金
国家自然科学基金(51278483)
中国科学院院地合作项目(ZNGZ-2011-023)
