MIBR-纳滤组合工艺在生活污水回用中的应用研究

STUDY ON THE TREATMENT OF DOMESTIC SWAGE BY COMBINED MIBR-NF PROCESS

将膜固定化微生物反应器(MIBR)与纳滤系统相匹配,构建MIBR-纳滤组合工艺,研究MIBR-纳滤系统对生活污水的处理效果。结果表明,最佳的HRT为8 h,MIBR-纳滤系统对污水中的COD、NH3-N的去除率都达到99%以上,对浊度和色度的去除更显示了其优越性,膜对整个系统起到了稳定和强化的作用。

The combined process of membrane immobilized bioreactor （MIBR） and nanofiltration （NF） was set up to study the treamaent effects on domestic sewage. The comparison of the removal of COD and NH3-N in different HRT showed that the best hydraulic retention time （HRT） was 8 h. Long-term operation indicated that MIBR-NF system had higher removal rates of COD and NH3-N, the removal rate of COD and NH3-N all can reach more than 99%, the removal of turbidity and chroma reflected the superiority, membranes played an important role in the stability and reinforcement of the whole system.