How does the Multi-Disk Screw Press achieve efficient dewatering of low-concentration sludge without prior concentration? Compared to traditional solid-liquid separation technologies, where does its core technical advantage lie?

   The Multi-Disk Screw Press represents a revolutionary new sludge dewatering device, specifically engineered to address the inefficiencies and clogging issues inherent in traditional equipment when processing low-concentration sludge. It ingeniously integrates three key functions—stacked disc filtration, gravity concentration, and spiral compression—into a single unit, enabling continuous and highly efficient sludge dewatering.
   The Multi-Disk Screw Press primarily comprises interlocking sets of rotating and stationary rings, a central spiral shaft, and a drive mechanism. The dewatering process occurs in two distinct stages within the equipment's cylindrical chamber:
    Concentration Stage (Gravity Dewatering): Upon entering the unit, sludge is propelled towards the dewatering section by the rotating spiral shaft. During concentration, the larger filter gaps between moving and stationary rings allow most free water to rapidly drain through under gravity, achieving rapid volume reduction.
   Dehydration Section (Screw Compression): Concentrated sludge enters the dehydration section. As the screw pitch and ring gap progressively narrow, the compressive and shear forces exerted on the sludge increase dramatically. Under intense pressure, capillary water is expelled from the sludge, ultimately forming a low-moisture content sludge cake. The spiral stacker has emerged as a global favourite in sludge dewatering due to three irreplaceable technical advantages:
   Superior Self-Cleaning and Anti-Blockage Design: The dynamic and static rings undergo continuous, alternating micro-movements driven by the spiral shaft, persistently clearing the filter gaps. This unique self-cleaning mechanism completely resolves issues of filter cloth or screen clogging, enabling stable processing of complex sludge containing oils or fibres.
   Energy Efficiency, Environmental Protection and Low-Noise Operation: Employing low-speed screw shaft drive, the stacking screw press operates at minimal power consumption, significantly undercutting the energy usage of high-speed centrifuges. Its low-speed, enclosed operation further ensures exceptionally low noise levels and zero odour dispersion, making it ideally suited for premium markets in Europe and America—such as Germany and the United States—where environmental standards are stringent.