For the problem that the mud pressed out by the plate and frame filter press is not formed and the filter cloth is sticky, the following are some possible causes and corresponding solutions:

Cause analysis

Improper sludge conditioning:

No sludge conditioner is added before the sludge enters the plate and frame filter press, or the type of conditioner is wrong, resulting in the sludge can not form a stable floc structure.

The sludge and the sludge conditioner are not fully mixed, and the mixing is not uniform, which makes the conditioning effect greatly reduced.

Improper selection of filter cloth:

Filter cloth material is not suitable for sludge properties, such as the surface is not smooth enough, easy to adhere to the sludge.

Improper selection of filter cloth aperture leads to sludge particles clogging filter cloth.

Unreasonable operation parameters:

The filter pressure is too high or too low, affecting the formation and adhesion of filter cake.

The filtration cycle is too long, and the mud stays on the filter cloth for too long, increasing the adhesion.

Equipment problem:

The seal of the plate and frame filter press is poor or the drainage pipe is blocked, resulting in poor sludge dewatering efficiency.

Equipment aging or improper maintenance, affecting the filter press effect.

Solution

Optimize sludge conditioning:

Select the appropriate sludge conditioner and ensure that it is fully mixed with the sludge.

Adjust the amount and adding method of sludge conditioner to achieve the best conditioning effect.

Select the right filter cloth:

Select the appropriate filter cloth material according to the nature of the sludge, such as polyester, polypropylene, etc.

Select the appropriate filter cloth aperture to avoid sludge particles clogging the filter cloth.

Adjust operating parameters:

Set filter pressure and filter period reasonably to avoid extreme operations.

Monitor the feed process to ensure feed uniformity and stability.

Strengthen equipment maintenance:

Regularly check the seal ring and drain pipe of the plate and frame filter press to ensure that it works normally.

Clean the filter cloth regularly to ensure that the surface and pores of the filter cloth are clean.

Timely replacement of aging or degraded filter cloth and equipment parts according to the use condition.

Other measures:

For more viscous sludge, you can consider diluting or adding filter AIDS to improve its fluidity.

Monitor the solid content and moisture content of the sludge to ensure that it is within the appropriate range.

In summary, in view of the problem that the mud pressed out by the plate and frame filter press is not formed and sticks to the filter cloth, it is necessary to comprehensively solve the problem from many aspects, such as sludge conditioning, filter cloth selection, operating parameters, and equipment maintenance. By optimizing these conditions, the working efficiency of the filter press and the quality of the filter cake can be significantly improved.