A/A/O-MBBR系统在水处理中的研究进展

Research Progress in A/A/O-MBBR Systems for Water Treatment

A/A/O-MBBR系统集A/A/O和MBBR优势于一体,通过缩短SRT,将A/A/O中的部分硝化过程转移到MBBR中;A/A/O在较短的SRT条件下运行,充分发挥了其除磷和反硝化特性;MBBR在较长的SRT条件下运行,有利于硝化效果的稳定和氨氮的彻底去除。将一定的填料投加到MBBR池里与A/A/O共同组成复合性的生物处理系统,该处理系统兼具了活性污泥法和生物接触氧化法两者的优点,是一种新型高效的复合工艺。A/A/O-MBBR系统能够同时存在悬浮态和附着态微生物,使得系统总的微生物量增加,加强了净化污水的能力,使得脱氮除磷效率得以提高。

A/A/O-MBBR system integrates the advantages of A/A/O and MBBR.By shortening SRT,part of the nitrification process in A/A/O is transferred to MBBR;A/A/O operates under short SRT conditions,giving full play to its phosphorus removal and denitrification characteristics;The MBBR operates under longer SRT conditions,which is conducive to the stability of nitrification effect and the complete removal of ammonia nitrogen.Certain fillers are added to the MBBR tank to form a composite biological treatment system with A/A/O.The treatment system has the advantages of both activated sludge method and biological contact oxidation method.It is a new and efficient composite process.A/A/O-MBBR system can have suspended and attached microorganisms at the same time,which increases the total microbial biomass of the system,strengthens the ability to purify sewage,and improves the efficiency of nitrogen and phosphorus removal.