When the sludge moisture content is high and the dewatering effect of the filter press is not good, it can be solved from the following aspects:

1. Improve sludge properties

Adding sludge conditioner: The use of sludge conditioner can reduce colloidal particles in the sludge and improve its dewatering performance. According to the nature of the sludge, the appropriate sludge conditioner is selected and added to the sludge in accordance with a certain proportion to reduce the colloidal particles of the sludge and facilitate flocculation and dehydration.

Pretreatment: pretreatment of sludge, such as adjusting the pH value, adding oxidants, etc., can improve the properties of sludge and improve the dehydration effect.

2. Optimize the use of flocculants

Select the right flocculant: According to the nature of the sludge and treatment requirements, choose the right flocculant. Commonly used flocculants are inorganic flocculants (such as polyaluminum chloride, polyferric sulfate, etc.) and organic flocculants (such as polyacrylamide, etc.).

Adjust the dosage and position: according to the experimental or empirical data, adjust the dosage and position of the flocculant, so that the flocculant can fully play its role and improve the flocculation effect.

3. Maintain and replace the filter cloth

Replace the filter cloth regularly: maintain the filtration performance of the filter cloth and avoid the poor dehydration effect caused by the clogging of the filter cloth. According to the use of the filter press and the nature of the sludge, the replacement cycle of the filter cloth is formulated.

Filter cloth cleaning: the filter cloth is cleaned regularly to remove the sludge particles and impurities blocked on the filter cloth, and the filtration performance of the filter cloth is restored.

In summary, the comprehensive application of the above measures and methods can effectively solve the problem of high sludge moisture content and poor dewatering effect of filter press. In actual operation, it is necessary to comprehensively consider the characteristics of sludge, the use of flocculant, the condition of filter cloth and the parameters of filter press, and improve the dewatering effect of sludge by optimizing the operation and improving the equipment.