The problem that the plate and frame filter press does not form mud does exist, and may be caused by a variety of factors. The following is a detailed analysis of the problem and the corresponding suggestions for dealing with it:

One. Cause Analysis

Improper sludge conditioning:

The sludge is not treated with the appropriate conditioner, or the type of conditioner is not selected properly, resulting in poor filtration water and particle rigidity of the sludge.

The mixture of conditioner and sludge is not uniform, and it does not play a full role.

Sludge properties:

The sludge solid content is low, the water content is too high, which affects the efficiency of mud pressing.

There are many hydrophilic groups on the surface of sludge and it is difficult to dehydrate.

The sludge is too fine, too viscous or the organic content is too high, resulting in water difficult to separate from the solid particles.

Equipment problem:

Design or manufacturing defects of the plate and frame filter press itself, such as improper selection or damage of the filter plate and filter cloth.

The pressure of the filter press is insufficient or the filtration time is not enough.

Operation problem:

The feed is not uniform and timely, resulting in poor filter press effect.

Improper setting of operating parameters, such as pressure, filtration time, drainage speed, etc.

Two, handling suggestions

Select the right sludge conditioner:

Select the right type of conditioner according to the nature of the sludge.

Ensure that the conditioner is fully mixed with the sludge.

Optimize sludge properties:

The dewatering performance of sludge can be improved by pretreatment or adjusting the pH value of sludge.

For the sludge with too high water content, it can be considered to add an appropriate amount of flocculant or adjust the sludge treatment process to improve the solid content treatment capacity.

Check and maintain the equipment:

Regularly check whether the filter plate, filter cloth and other parts of the plate and frame filter press are in good condition, and replace the damaged parts in time.

Ensure that the pressure of the filter press is sufficient and the filtration time is long enough.

Standard operation process:

Press filtration operation in strict accordance with the operating procedures to ensure uniform and timely feeding.

According to the characteristics of sludge and equipment requirements, reasonable adjustment of operating parameters.

Adoption of new technology or equipment:

Consider using more advanced equipment such as a high-pressure diaphragm filter press to improve the dehydration effect.

The introduction of an automated control system to improve the stability and controllability of the filtration process.

In summary, the problem of non-forming mud press of plate and frame filter press can be solved by selecting appropriate sludge conditioner, optimizing sludge properties, checking and maintaining equipment, standardizing operation processes, and adopting new technologies or equipment. In actual operation, it is necessary to consider a variety of factors according to the specific situation, and take appropriate measures to achieve the best filter press effect.