When using the plate and frame filter press to press mud, the mud cake does have a high moisture content and sticky filter cloth. The following is a detailed analysis of the problem:

One. Reasons for high moisture content

Sludge properties:

The sludge itself may be too viscous, or the content of organic matter is too high, resulting in difficult dehydration.

There are more hydrophilic genes in the sludge, which makes it difficult for water to be effectively squeezed out.

Equipment problem:

The poor sealing of the plate and frame filter press or the blockage of the drainage pipe will lead to reduced dehydration efficiency and increased mud cake moisture content.

Improper selection of filter cloth or incomplete cleaning may also affect the dehydration effect.

Operation problem:

Uneven feed, not timely, or insufficient feed pressure may lead to inadequate dehydration.

Insufficient filtration time may also lead to incomplete drainage of water inside the mud cake.

Two, the reason for the sticky filter cloth

Filter cloth quality:

The quality of the filter cloth itself is not good, such as the surface is not smooth enough and it is easy to adhere to the sludge.

Clogging or breakage of the filter cloth will also cause the water content of the mud cake to increase, and then adhere to the filter cloth.

Drug use:

The use of inappropriate agents or improper amounts of agents will affect the dewatering performance and flocculation effect of the sludge, resulting in sticky filter cloth.

Sludge properties:

High viscosity and organic matter content of sludge, as well as the presence of hydrophilic genes on the surface, will increase the risk of viscous filter cloth.

Three, solution

Improve sludge properties:

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

Select the appropriate agent and dosage for different sludge types.

Optimize equipment configuration:

Ensure that the seal of the plate and frame filter press and the drainage pipe are unimpeded.

Select the appropriate type of filter cloth, and wash and replace it regularly.

Standard operation process:

Filter press operation in strict accordance with the operating procedures to ensure uniform feed, timely, and sufficient feed pressure and filter press time.

Use of new agents:

Consider the use of new sludge dewatering agents, such as sludge conditioners, to reduce the moisture content and adhesion of the sludge.

In summary, when the plate and frame filter press is used to press mud, the problem of high moisture content of mud cake and sticky filter cloth does exist. However, this problem can be effectively solved by improving sludge properties, optimizing equipment configuration, standardizing operation processes and using new agents.