好氧颗粒污泥处理再生纤维造纸废水二级出水的研究

Treatment of Recycled Fiber Papermaking Wastewater with Aerobic Granular Sludge

关键词:  SBBGR  二级出水  好氧颗粒污泥  微生物群落  废水处理

Key Words:SBBGR  secondary effluent  aerobic granular sludge  microbial community  wastewater treatment

摘要:采用序批式颗粒污泥床反应器（SBBGR）培养、驯化好氧颗粒污泥，并应用于处理再生纤维造纸废水二级出水，探讨废水中污染物的去除效果，分析反应器中微生物种群的变化。结果表明，在进水（二级出水）COD_Cr和BOD₅分别为（190±33.4）mg/L和（7.2±1.7）mg/L条件下，出水COD_Cr可降至（95±22）mg/L，去除率为（47.7±5.0）%；红外光谱和气相色谱-质谱联用仪分析表明，SBBGR反应器对芳香族化合物为代表的特征污染物具有良好的降解去除效果；微生物群落分析表明，经过驯化后具有降解废水中芳香族化合物能力的微生物在污泥中的相对丰度提高，SBBGR反应器有降解木质素的能力。

Abstract:In this study， a sequencing batch biofilter granular reactor （SBBGR） was used to cultivate and domesticate aerobic granular sludge and was applied to treat secondary effluent from recycled fiber paper making wastewater， to investigate the removal of pollutants from the wastewater and to analyze the changes of microbial populations in the reactor. The results showed that the effluent COD_Cr could be reduced to （95±22） mg/L with a removal rate of （47.7±5.0）% at the influent COD_Cr and BOD₅ of （190±33.4） mg/L and （7.2±1.7） mg/L. The FT-IR and GC-MS analysis showed that SBBGR had effective removal of the characteristic pollutants represented by aromatic compounds. Microbial community analysis showed that the relative abundance of micro organisms with the ability of degrading aromatic compounds in wastewater was increased in the sludge after domestication，and SBBGR had the ability to degrade lignin.