Treatment of Industrial dimethylamine wastewater in a distillation tower at lab scale

One of difficult pollution control tasks for leather plants is the dimethylamine wastewater treatment. It is identified that there are two serious problems occurring in the current treatment process: low removal efficiency and low recycle efficiency. To solve these problems, new-type high efficiency packing and wastewater treatment process are proposed. The rectifying conditions of dimethylamine wastewater were investigated in a laboratory continuous distillation tower. Dimethylamine distillation efficiencies of no less than 47% at the top of tower was obtained, when the bottom temperature was controlled between 105 similar to 106 degrees C, reflux ratio between 2 similar to 3, Final concentrations of less than 50 mg.L-1 at the bottom was obtained.