固定化细胞流化床反应器处理难降解有机物喹啉的试验研究

采用PVA 硼酸 纱布法将筛选得到的能够利用喹啉作为唯一碳源、氮源和能源的皮氏伯克霍尔德氏菌(Burkholderia pickettii)固定化 ,将固定化细胞投加到流化床反应器中处理不同浓度的喹啉废水 ,喹啉初始浓度为 100、350和 500mg/L时 ,喹啉完全去除所需时间分别为 2.5、6和 12h .动力学试验结果表明 ,固定化细胞流化床反应器内喹啉的降解过程遵循零级反应动力学 .利用固定化细胞流化床反应器连续处理不同浓度的喹啉废水 ,考察了不同水力停留时间 (稀释率 )对处理效果的影响及流化床反应器耐冲击负荷的能力 .

Quinoline Removal in Fluidized-Bed Bioreactor Using Immobilized Cells

Burkholderia pickettii, capable of using quinoline as sole source of carbon,nitrogen and energy,was immobilized by an innovative PVA H 3BO 3 gauze method.A fluidized bed bioreactor,in which immobilized cells were added,was constructed to degrade quinoline in wastewater.When the initial concentrations of quinoline were 100,350 and 500 mg/L,the bioreactor can remove it completely within 2 5,6 and 12 hours respectively.A series of zero order reaction equations were proposed to describe quinoline biodegradation process in this bioreactor kinetically.In continuous flow experiments,the performance of the bioreactor was investigated at different HRT (dilution rate) for different quinoline concentrations in wastewater and the tolerance against shock loading was determined by increasing quinoline concentration from 100 to 300 to 500 mg/L at HRT 4 hours.