There are many reasons for sludge adhesion to the filter cloth when the plate and frame filter press presses mud, mainly including the following aspects:

Filter cloth quality problem:

The quality of the filter cloth itself directly affects its filtration effect and the adhesion of the sludge. If the surface of the filter cloth is not smooth enough or there are defects, the sludge is easy to adhere to the filter cloth.

The filter cloth may be blocked or damaged during use, which will lead to an increase in the water content of the mud cake, and even difficult to form a complete mud cake, thereby increasing the risk of sludge adhering to the filter cloth.

Plate and frame filter press performance problem:

The poor sealing of the plate and frame filter press or the blockage of the drainage pipe will affect the dehydration efficiency of the sludge, resulting in an increase in the moisture content of the mud cake, which is easier to adhere to the filter cloth.

If the pressing device of the equipment fails to press the filter plate and the filter cloth tightly, it may also cause the sludge to seep out of the gap and adhere to the filter cloth.

Sludge properties:

The viscosity of sludge is an important factor affecting its adhesion to filter cloth. If the sludge is too viscous, or contains more viscous substances, it is easy to adhere to the filter cloth.

The size and distribution of solid particles in the sludge will also affect its filtration effect and adhesion. Too small or unevenly distributed particles can lead to clogging of the filter cloth, which in turn increases the risk of sludge adhesion.

Improper operation:

In the filtration process, if the feed is not uniform, not timely, or the feed pressure is unstable, it may affect the dehydration effect of the sludge and the adhesion of the filter cloth.

When washing the filter cake, if the pressure of the washing water used is too large or the amount of water is too much, it may also cause the sludge to be washed onto the filter cloth and adhere to it.

In order to reduce the sludge adhesion to the filter cloth, the following measures can be taken:

Select a good quality filter cloth and ensure that its surface is smooth and free of defects.

Regularly check and maintain the tightness of the plate and frame filter press and the smooth drainage pipe.

Select the appropriate filter aid or diluent according to the nature of the sludge to reduce the viscosity and moisture content of the sludge.

Optimize the operation process to ensure uniform and timely feed, and control the appropriate feed pressure.

When washing the filter cake, pay attention to controlling the pressure and water amount of the washing water to avoid washing the sludge onto the filter cloth.

In summary, there are many reasons for sludge adhesion to filter cloth when the plate and frame filter press presses mud, which need to be comprehensively considered and dealt with from many aspects such as filter cloth quality, equipment performance, sludge properties and operation process.