How to control the moisture content of filter cake of filter press

First of all, we can think that when the filtering cycle is close to the end, we will increase the pressing time of the filter press on the filter cake. Everyone knows that the ordinary clearance filter press works through four stages: feeding, filtering, squeezing and unloading. The first two filters are mainly reflected in the filtering efficiency of the filter press. The moisture content of the filter cake is mainly reflected in the third stage, so to achieve the purpose of reducing the moisture content of the filter cake, we can take the time of this process. Increase deliberately.

When the filtering efficiency of filter press is greatly reduced, the amount and flow rate of filtered water are greatly reduced. This indicates that the filter cake components in the filter chamber have reached the design components and are filled with the whole filter chamber. At this time, the feeding valve should be closed to stop feeding. Let the filter press keep the high pressure extrusion state of geotextile filter cake, and increase the pressure on the mechanical filter press to increase the pressure. For automatic pressure filter press, only some pressing time can be added. The water in the filter cake is squeezed out.

In addition, for some filter presses with high demand which need backwashing and blowing drying, we can appropriately increase the extruding process and also increase the drying time of the blower.