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Application of belt filter press in sludge dewatering

With the accelerated process of urbanization, urban sewage treatment rate increased year by year, the city sewage treatment plant sludge production is also increasing. In order to solve this problem, the belt filter produced by our company has the characteristics of low moisture content and low stability, low energy consumption and easy management. It is mainly used in papermaking, printing and dyeing, pharmaceutical, mining, steel, coal and tannery And other industries, especially in urban sewage treatment and industrial sludge dehydration in the most common application.
Reasonable choice of sludge dosing method: After the concentration of sludge to be deposited by the mud pool to the belt filter press, in the project we use the frequency control device screw pump plus high with a stirrer sludge Mixing tank after the overflow gravity cast to ensure that the filter into the filter pressure, mud volume stability. It is best not to use centrifugal pumps and other directly to the filter press to add sludge, because of its flow, pressure is difficult to control, easy to lead to follow-up quenching can not be normal.
In addition, in the quenching and tempering control: the sludge must be flocculated before dehydration process, the flocculation effect is good or bad effect on the dehydration has a great impact. Belt dewatering machine is highly dependent on flocculation. If the dosage is insufficient, the capillary water in the sludge can not be converted into free water in the gravity area, so the sludge entering the low pressure zone from the debris area is still flowing and can not be squeezed. On the contrary, if the dosage is too large, one is to increase the cost of treatment, more importantly, because the sludge viscosity increases, it is likely to cause filter belt blockage. For different types of sludge must go through a reasonable selection of flocculants and determine the amount of flocculant, has been a better flocculation effect.

Problems and Solutions of Debugging Process of Belt Filter Press
Vacuum filter conveyor belt