Optimizing the mud press effect of plate and frame filter press, especially for the problem of high water content, can be improved from the following aspects:

One. Sludge conditioning

Select the right sludge conditioner:

The selection of sludge conditioner should be determined according to the nature of the sludge (such as organic content, inorganic content, pH, etc.). The suitable conditioner can effectively change the flocculation structure of the sludge and improve the dewatering property of the sludge.

Commonly used sludge conditioners include inorganic conditioners (such as iron salts, aluminum salts, etc.) and organic polymer conditioners (such as polyacrylamide, etc.). The inorganic conditioner is mainly suitable for the sludge with higher inorganic content, while the organic polymer conditioner is more suitable for the sludge with higher organic content.

Determine the best addition amount and method:

The amount of sludge conditioner added should be determined according to the nature of the sludge and the type of conditioner. Adding too little may not achieve the desired conditioning effect, while adding too much may increase processing costs and may cause corrosion to the equipment.

The method of adding the conditioner is also very important, and it should be ensured that the conditioner is fully mixed with the sludge. Mechanical mixing and pipeline mixing can be used to improve the mixing effect.

Two, filter operation

Select the appropriate filter material and aperture:

The choice of filter cloth should be determined according to the nature of the sludge and the type of filter press. Suitable cloth material and aperture can ensure good filtration effect and appropriate mud cake discharge.

Filter cloth should be cleaned or replaced regularly to prevent clogging and wear. High pressure water gun or chemical cleaning agent can be used for cleaning.

Adjust filter pressure and feed speed:

Filtration pressure is one of the key factors affecting the dehydration effect. On the premise of ensuring the safe operation of the equipment, the filtration pressure can be appropriately increased to improve the dehydration efficiency. However, it should be noted that too high pressure may damage the filter cloth or affect the subsequent treatment of the sludge.

The adjustment of feed speed is also very important. Too fast feed speed may lead to uneven cake formation or insufficient dehydration, while too slow feed speed may reduce the processing efficiency of the filter press.

Preheating mud:

When dealing with high viscosity or low temperature mud, preheating mud can improve the filtration efficiency. Preheating reduces the viscosity of the mud, making it easier to dehydrate it through the filter cloth.

Three, equipment maintenance

Regular maintenance and cleaning of filter press:

includes cleaning blocked filter plate holes, checking whether mechanical parts are in good condition, replacing wearing parts, etc. These maintenance work can ensure the normal operation of the filter press and extend the service life.

Ensure that the filter plate is smooth and non-destructive:

The flatness of the filter plate has a great influence on the filter press effect. If the filter plate is deformed or damaged, it may lead to mud leakage or poor filtration. Therefore, it is necessary to check the flatness of the filter plate regularly and replace the damaged filter plate in time.

IV. Other precautions

Avoid direct feed:

Before filtering, it should be avoided to directly feed the unconditioned sludge into the filter press. This easily leads to clogging of filter cloth and poor filtering effect.

Increase sludge solid content:

Solid content of sludge is one of the important factors affecting the filtration effect. Appropriately increasing the solid content of sludge can reduce the water content of the extruded sludge and improve the filtration efficiency.

In summary, through the comprehensive consideration and practical operation of selecting the appropriate sludge conditioner, optimizing the filtration operation, regularly maintaining the equipment and paying attention to other related matters, the mud pressing effect of the plate and frame filter press can be optimized and the water content of the sludge can be reduced.