Horizontal screw sedimentation centrifuges are manually operated, top-discharge, batch-type centrifuges. Based on their separation principles, they can be classified into two types: horizontal screw sedimentation centrifuges for filtration (SS type) and horizontal screw sedimentation centrifuges for sedimentation (SSC type).

The LWL spiral filter centrifuge is a high-speed rotary filter centrifuge. Under the influence of a powerful centrifugal force field, the processed material undergoes rapid filtration and dewatering on the stainless steel mesh of the filter drum, while the sediment is continuously discharged by the spiral blades on the screw feeder. The separation factor of screw filter centrifuges used in chemical plants can reach 3000. These centrifuges are compact, highly efficient, and produce filter cakes with relatively low moisture content.

As a type of sludge treatment equipment, a horizontal screw centrifuge must possess certain basic performance characteristics to ensure operational efficiency when deployed for sludge treatment.

Horizontal screw centrifuges often experience common malfunctions, typically manifested as difficulty starting up and severe vibration during dry running. The maintenance issues for horizontal screw centrifuges are summarized as follows: