臭氧-生物活性炭联用工艺去除苯酚的影响因素研究

Influencing Factors of Phenol Removed by Ozone-Biological Activated Carbon Combined Process

该文研究了臭氧-生物活性炭联用对苯酚的去除效果和影响因素,包括苯酚初始浓度、Mn2+离子、铵根离子、p H值、常规工艺等的影响。结果表明,随着苯酚初始浓度的升高,苯酚的降解速度下降;锰离子投加量增加而苯酚的去除率并不提高;对苯酚的去除效果随着铵根离子投量的增加而减小;随着p H值的升高,臭氧活性炭工艺对苯酚的去除效果表现为先快速上升而后趋于稳定;混凝、沉淀—臭氧活性炭组合工艺提高了苯酚的去除效果。臭氧-生物活性炭去除苯酚的主要机理是以氧化分解和生物降解为主。

Removal effect and influencing factors of phenol by the ozone - biological activated carbon （O3＋BAC）combined process were investigated, including the effect of initial phenol concentration, Mn2＋ ions, ammonium ions, pH value, the conventional process and so on. The results show that, the degradation efficiency of phenol is decreased with phenol concentration increased; The man- ganese ion dosage increase and the phenol removal efficiency does not increase;The removal efficiency of phenol decreases with increase of ammonium ion dosage, performance on the removal of phenol by O3＋BAC for rapid increase first and then tends to be stable with the increasing of pH value; coagulation, precipitation and O3＋BAC combined process improves the removal efficiency of phenol. The main mechanism of removing phenol by O3＋BAC with oxidation and bio-degradation.