To solve the problem of high moisture content of plate and frame sludge decertification cake can be started from the following aspects:

Optimized sludge pretreatment:

Before the sludge enters the plate and frame filter press, sufficient pretreatment, such as coagulation, precipitation, air flotation, etc., is carried out to reduce the moisture content in the sludge.

Chemical sludge conditioner was used to condition the sludge and improve the dewatering property of the sludge.

Adjust filter press operating parameters:

According to the nature of the sludge, adjust the operating pressure and time of the plate and frame filter press to ensure that the sludge is subjected to sufficient pressure during the filtration process, so as to discharge more water.

Check the filter cloth of the filter press regularly to ensure that the filter cloth is not blocked or worn to maintain a good filtration effect.

Improved sludge feeding method:

Optimize the feed rate and concentration of the sludge to ensure that the sludge is evenly distributed in the filter press to avoid local overload or insufficiency.

If possible, use continuous feeding to maintain a stable pressure in the filter press.

Strengthen filter press maintenance:

Regularly clean and maintain the filter press to ensure the normal operation of all components.

Inspect and replace aging seals and filter cloths to prevent moisture leakage.

Consider using assistive devices:

Add sludge thickening equipment before the filter press, such as a belt thickener or a centrifugal thickener, to reduce the amount of sludge and water content entering the filter press.

Use auxiliary equipment such as vacuum filtration or pressurized filtration to further improve the dewatering efficiency of sludge.

Adjust sludge conditioning formula:

According to the specific properties of the sludge, the type and dosage of the sludge conditioner are adjusted to improve the dewatering performance of the sludge.

Try to use different types of sludge conditioners and compare their dewatering effects.

Strengthen site management:

Train the operators to ensure that they are familiar with the operating procedures and precautions of the filter press.

Check the quality and dewatering effect of the sludge regularly, adjust the operating parameters and conditioning formula in time.

In summary, to solve the problem of high moisture content of the plate and frame sludge decertifying cake, it is necessary to start from many aspects, including optimizing sludge pretreatment, adjusting the operating parameters of the filter press, improving the sludge feeding method, strengthening the maintenance of the filter press, considering the use of auxiliary equipment, adjusting the amount of sludge conditioner and strengthening site management. Through comprehensive policies, the moisture content of mud cake can be effectively reduced and the efficiency of sludge dewatering can be improved.