Abstract：
In this work, an effort has been made to enhance the efficacy of biological process for the effective degradation of 2, 4-dichlorophenol (2, 4-DCP) from wastewater. The polyurethane foam was modified with Fe3O4 nanoparticles and combined with polyvinyl alcohol, sodium alginate, and bacterial consortium for biodegradation of 2, 4-DCP in a packed bed biofilm reactor. The maximum removal efficiency of 2, 4-DCP chemical oxygen demand, and total organic carbon were found to be 92.51 ± 0.83 %, 86.85 ± 1.32, and 91.78 ± 1.24 %, respectively, in 4 days and 100 mg L-1 of 2, 4-DCP concentration at an influent loading rate of 2 mg L-1h-1 and hydraulic retention time of 50 h. Packed bed biofilm reactor was effective for up to four cycles to remove 2, 4-DCP. Growth inhibition kinetics were evaluated using the Edward model, yielding maximum growth rate of 0.45 day-1, inhibition constant of 110.6 mg L-1, and saturation constant of 62.3 mg L-1.
摘要：
在这项工作中,已经努力增强生物过程的效率，以有效降解废水中的2，4-二氯苯酚（2，4-DCP）。用Fe3O4纳米粒子对聚氨酯泡沫进行改性，并与聚乙烯醇结合，海藻酸钠,和细菌聚生体在填充床生物膜反应器中生物降解2，4-DCP。最大去除效率为2，4-DCP化学需氧量，总有机碳为92.51±0.83%，86.85±1.32和91.78±1.24%，分别,在4天和100mgL-1的2，4-DCP浓度下，进水负荷速率为2mgL-1h-1，水力停留时间为50h。填充床生物膜反应器可有效去除多达四个循环2，4-DCP。使用爱德华模型评估生长抑制动力学，产生最大生长速率为0.45day-1，抑制常数为110.6mgL-1，饱和常数为62.3mgL-1。
