There can be several reasons why the filter press sludge is too thin, and here are some common ones:
The moisture content of the slurry is too high: if the moisture content of the slurry is too high, the moisture content of the mud cake after the filter will also increase accordingly, so that the mud cake will be too thin. This can be due to improper pre-treatment of the slurry, or excessive water addition during the slurry conveying process.
Filter cloth clogging: After using the filter press for a long time, the filter cloth may be clogged, affecting the normal filtration of the slurry. Clogged filter cloth will lead to poor water filtration and increased moisture content of mud cake.
Leakage of filter plate: The filter plate is an important part of the filter press, if the filter plate leaks, it will affect the filter press effect and cause the mud cake to be too thin.
Hydraulic system failure: The hydraulic system is an important driving part of the filter press, if the hydraulic system fails, it will lead to insufficient working pressure of the filter press, which will make the mud cake too thin.
Feed speed too fast: Feed speed too fast will cause the slurry to stay in the filter press for too short a time, so that the filter cake will be too thin.
Improper ratio of flocculant: flocculant is a chemical agent used to improve the properties of the mud, if the ratio of flocculant is improper, it will lead to poor flocculation effect of the mud, so that the mud cake is too thin.
Aging of filter press: Aging of filter press may occur when used for a long time, which will affect its filter press effect.
In addition, there are other possible causes, such as improper selection or dosage of sludge conditioner, flocculant, sludge characteristics, selection and condition of filter plates, mechanical failure, low feed concentration, improper operating parameters, and insufficient sludge pretreatment, etc.
In view of the above reasons, corresponding measures can be taken to solve the problem that the sludge press is too thin. For example, adjusting the moisture content of the slurry, cleaning or replacing the filter cloth, inspecting and repairing the filter plate, checking the hydraulic system, adjusting the feed rate, adjusting the flocculant ratio, replacing aging filter press parts, etc.
Please note that the above are just some of the common causes and solutions, and the actual situation may vary depending on the equipment model, operating conditions, material characteristics, etc. If the problem persists, it is recommended to contact a professional technician for further troubleshooting and repair.