Study on the Removal of Aniline by Plant Assisting Activated Sludge

The enhanced degradation of refractory organic compounds by assisting plant during the activated sludge process has been a hotspot. Aniline was used as a model compound to study the reinforcement degradation of alocasia macrorrhiza during the activated sludge process. With the help of the assisting plant, the removal ratio of aniline could increase from 70% to 97.8% with reaction time 25hr, MLSS 3500 mg/L. three main factors including MLSS, reaction time and initial concentration of aniline were studied by using single factor analysis method and orthogonal experiment. The suitable condition was selected on the basis of the aniline removal capability. According to the result of range analysis, the sequence for the three factors was reaction time > MLSS > initial concentration. The optimal condition was MLSS 3500 mg/L, Initial concentration 30 mg/L and reaction time 14hr, respectively.