Q_c =250L/h, Q_f=250 L/h, adds drug 20 L/h(with 1.5 times dose drug to the best dose). (The letter c means coagulation, and the letter f means filtrating.) Then the results of the flowing water experiments imply that the second series is the best one.

• Q_混=250 L/h，Q_滤=250 L/h，加药20 L/h(1.；5倍浓度)，分别试验后得出：Q_混=500 L/h，Q_滤=500 L/h，加药20 L/h最好。