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Russian Application of Chamber Filter Press in Salt Sludge Treatment
The introduction of salt mud：
Salt sludge is the waste produced during the refining process of industrial raw salt. The raw salt used by caustic soda enterprises in my country is of poor quality, and the amount of salt mud produced is relatively large. A large amount of salt mud waste is directly discharged into the ditch, which not only causes a waste of resources but also flows into the Xiangjiang River, causing serious environmental pollution. Therefore, it is necessary to use a chamber filter press with a good filtering effect and high efficiency to replace the three-layer mud washing bucket to wash mud and recover raw salt.
The treated clear liquid is sent to the salt chemical section for recycling, and the dry residue is transported away and buried in a landfill, which not only reduces the salt consumption of caustic soda production but also solves the pollution caused by salt mud discharge.
Composition and principle of chamber filter press
A chamber filter press is a kind of intermittent operation filtration equipment that is used for solid-liquid separation of various suspensions with good separation effect and is widely used in petroleum, chemical, dyestuff, metallurgy, medicine, food, and other industries. The machine adopts the integrated design and manufacture of machine, electricity, and hydraulic, with reasonable structure, simple and reliable operation, and convenient maintenance. It can realize the automatic operation of filter plate pressing, feeding, filtering, washing, and other processes; the overall structure is made of ductile iron casting, which has a long service life.
This filter press can wash the filter cake and further recover the water contained in the filter cake. Usually, the compressed air can be fed through the washing port or the feeding port. When the compressed air passes through the filter cake layer, it will take away part of the water in the filter cake. Thereby reducing the moisture content of the filter cake. After the slurry is filtered, the filter cake is washed, squeezed, and blown in the machine, and the slurry with a water content of about 45% can be obtained. The active ingredients, after filtering, washing, and pressing, are sent to the brine section for recycling.
Advantages of chamber filter press in Salt Sludge Treatment
Replacing the three-layer mud washing tank with a chamber filter press to recover the raw salt in the mud is carried out on the premise of specificity, mainly to solve the incomplete recovery of the raw salt in the three-layer mud washing tank, and the washed mud is discharged into the ditch.
A series of problems such as flowing into rivers, polluting the environment, and disrupting the balance of salt water. This filter press has a reasonable structure, simple and reliable operation, and convenient maintenance. It can realize various processes such as filter plate pressing, feeding, filter pressing, washing, pressing, and plate drawing; at the same time, it has an automatic plate drawing system, which greatly reduces labor intensity, improving production efficiency.
