Evidently,interstage washing efficiency affacted the bleaching results, the brightness of the pulp was only 68. 9% SBD if interstage washing efficiency was 80%.

• 随着漂间洗涤效率降低,漂白浆白度明显降低,增加漂白药液用量虽仍能使漂白浆获得上述的白度,但浆的聚合度大大降低。