In the sewage treatment of printing and dyeing industry, Horizontal screw centrifuge It is often used for sludge dewatering and thickening. Printing and dyeing wastewater It usually contains pigments, dyes, suspended solids and other solid substances Centrifuge The solid particles can be separated and dehydrated.
The horizontal screw centrifuge separates the water in the sludge from the solid particles through the high-speed rotating screw propeller and centrifugal force, and discharges the solid particles from the equipment through the slag discharge mechanism. The moisture content of sludge solids after dewatering is reduced, which is convenient for subsequent treatment and disposal.
However, in the sewage treatment of the printing and dyeing industry, in addition to the horizontal spiral centrifuge, other equipment may also be used to treat sludge, such as belt press, filter cloth press, etc. These equipment have different characteristics and applicability according to the nature of sewage and treatment requirements.
Therefore, when choosing printing and dyeing Sewage treatment equipment In order to determine the most suitable treatment scheme, it is necessary to comprehensively consider the characteristics of sewage, treatment demand, equipment performance, economy and other factors. It is recommended to consult and discuss in detail with professional equipment suppliers or process engineers in the process of equipment selection and process design to ensure the selection of appropriate equipment and measures.
stay Printing and dyeing wastewater treatment In addition to horizontal spiral centrifuge, other equipment is often used for sludge treatment and dewatering. The following are some common printing and dyeing wastewater treatment equipment:
1. Belt press: the belt press uses the belt filter medium to squeeze and dewater the sludge to reach a lower solid moisture content. This kind of equipment is suitable for situations with large sludge particle size or more fiber.
2. Filter cloth press: The filter cloth press gradually discharges the water in the sludge through the press function of the filter cloth to achieve dehydration. Compared with belt press, filter cloth press is more suitable for handling soft and viscous sludge.
3. Intermittent filter press: The intermittent filter press removes the water in the sludge through the movement and compaction of the filter press plate. This equipment is suitable for treating sludge with high solid moisture content.
4. Paddle vacuum filter: The paddle vacuum filter uses vacuum suction and paddle stirring to dewater the sludge through the filter screen. This kind of equipment is suitable for treating relatively thin and turbid sludge.
Appropriate equipment should be selected according to the characteristics, treatment demand and treatment capacity of printing and dyeing wastewater. Different equipment has differences in dehydration effect, treatment capacity, maintenance cost and operation difficulty. It is recommended to consult and discuss with professional equipment suppliers or process engineers in detail before equipment selection to optimize sewage treatment process and find the most suitable equipment scheme.
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