The article analyzes cause on sandwich filter cake,introduces the solut ion on this question.It aslo proved designing reasonablesess of dewatering system has influence on filtering result.

• 分析了压滤机过滤时滤饼存在夹心的原因，介绍了对该问题的处理措施。指出：压滤机配套系统设计的合理与否对压滤机的过滤效果是有影响的。