Benenv - Multi-Disk Screw Press
Multi-Disk Screw Press is a new solid-liquid separation equipment. The pitch of the screw and the gaps between the rings decrease, increasing its internal pressure, thus dehydration is achieved. It can be widely used in municipal sludge, food, beverage, slaughtering breeding, printing and dyeing, oil chemical industry, paper making, leather, pharmaceutical and other industries of sludge dewatering. The unique dewatering principle makes the equipment suitable for high and low concentration sludge (from 2000mg / L), creating a precedent for direct dehydration of low concentration sludge. The innovative structure design makes the equipment suitable for all kinds of sludge with high and low viscosity, especially oily sludge, which can be called a dewatering tool for oily sludge!
Due to the innovation of the structure design, it is highly suitable for various high and low concentration sludge (2000mg/L-50000mg/L), most especially the oily sludge.
Dehydration Process
The type and the added quantity of the polymer should first be determined by experiment. If two kinds of polymer are required, we recommend the dehydrator with two flocculation tanks. The stirring device in the sludge tank runs continuously to ensure the relatively stable concentration of inlet sludge.
Polymer solution needs to be ready using polymer preparation device before screw press starts running. Polymer solution and sludge are mixed and stirred, forming flocs in the flocculation tank. As the sludge makes its way down to the drum by the rotation of the screw, thickening and dewatering takes place. Filtrate comes out from the gap and sludge cake is discharged from another end. Filtrate can be reused by further treatment. Sludge cake can be transferred by conveyor.
Simple process, efficient and energy-saving dewatering, low system investment System can be programmed to make the operation more convenient and accurate Unique flocculating agent to make sludge dewatering easier Uniform and accurate dispensing, saving running cost.
Structure Principle
Layers of the spacers, which are fixed and moving rings, are secured in place by a tie rod. The inner diameters of moving rings are slightly smaller than the outer diameter of the screw and their rings. Mobilized by the screw, it continuously cleans the sludge out of the gaps, therefore, preventing clogging.
Dewatering Principle
Screw pitch becomes smaller towards the end plate, which gives pressure to dewater sludge.
Filtering Zone
Dewatering drum comprised interlaminated fixed rings and moving rings. Filtrate is discharged between the gaps of the rings.
Clog-free Structure
Moving rings are mobilized by the screw to prevent clogging.