【摘要】 焦化废水属有毒有害、难降解的高浓度有机废水,其中间甲酚等酚类污染物含量较高且用常用水处理方法去除比较困难。因此,研究了将浮动床生物膜反应器与膜生物反应器进行复合去除焦化废水中间甲酚的影响因素,并与普通MBR反应器在相同间甲酚浓度梯度下的处理功效进行比较。结果表明,在相同间甲酚浓度下,生物浮动床膜生物反应器的处理效果优于普通MBR反应器,其毒阈值为1200 mg/L,普通MBR反应器为1000 mg/L。同时,利用扫描电镜对浮动床膜生物反应器填料上微生物进行观察,考察了间甲酚浓度升高对填料上微生物的影响及附着态微生物形态的变化,得出大型微生物随着间甲酚浓度的提高最后破裂死亡;杆菌种类及数量减少,最后转变成丝状菌;球菌的菌胶团解体,形状变成短杆状。更多还原

【Abstract】 The coking wastewater is high intensity organic wastewater which is virulent,harmful and difficult to degrade. The content of m-cresol and other phenols pollutant is high and more difficult to degrade. It was studied the influence factors of removing m-cresol by combining the floating bed biomembrane reactor with membrane bioreactor The effieieneies of floating bed biomembrane reactor with membrane bio-reactor and MBR reactor were compared at the same concention of m-cresol,the experimental results showed that floating bed biomembrane reactor with membrane bio-reactor had the batter effieient,and proved that the hightest concention of m-cresol was 1200 mg/L,and the MBR reactor was 1000 mg/L. At the same time,used the electron microscope was used to observe the microorganism in the filler,and investigate the change of the morphology of microorganism when concention of m-cresol was increased,it showed that the big microorganism died finally; the mumber of bacillus was decreasing and they became filamentous bacteria; the zoogloea of spherical bacteria was disintegrated and the form became brevibacterium.更多还原