杂酚废水对厌氧颗粒污泥微生物影响

Impacts of wastewater with various phenolic compounds on the microorganisms of anaerobic granular sludge

摘要:

为去除生产双酚A工业废水中的苯酚、丙酮、双酚A以及溶解于丙酮中很多难以监测的含酚类成分,通过厌氧颗粒污泥静态培养及驯化,验证其厌氧微生物对此类废水的适应性及处理效果．在颗粒污泥对该杂酚废水的静态适应性实验中,其微生物对该杂酚废水有较好的适应性,6 h的接触时间就可以使原水的COD降低约58％．驯化及连续运行60 d后在水力停留时间为9 h时,可使COD去除率达50％．利用扫描电镜观察反应器内实验前后的颗粒污泥,发现其内部和表面微生物均有很大的差异．

Abstract:

To removal the raw materials of bisphenol A (such as phenol, acetone, and molecules of bisphenol A dissolved in the acetone) and various phenolic compounds, which are hard to be detected, from bisphenol A producing wastewater, the adaptability and treating efficiency of microorganisms to this type of wastewater are tested by static cultivating and acclimating the anaerobic granular sludge. The results of static adaptability tests show that the microorganisms adapt to this type of wastewater well. The COD is decreased by 58％ when the contact time is 6 hours. After acclimating the microorganisms for 60 days, the COD removal efficiency can get to 50％ with hydraulic retention time of 9 hours. Great diversity of microorganisms both inside and on the surface of the granular sludge can be found when using SEM to observe the granular sludge in the reactor before and after the experiment.