Abstract: Introduces several conventional methods and apparatus for filter press filtrate discharge , and analyze their advantages and disadvantages. In order to further improve yield of filter press, reduce the solid content of filtrate, quickly find out the damaged filter cloth. The improvement of the existing press liquid discharge method is carried out, and applied in practice. The results show that: the new device can not only greatly reduce the solid content of filtrate, also can quickly and accurately find damage cloth, reduce down time, improve work efficiency.

Key words: filter press, filtrate discharge, open channel flow, undercurrent