After being fed into the rotating drum through a hollow shaft, the sludge is immediately thrown into the drum cavity by the centrifugal force generated by the high-speed rotation. Because of its higher density and greater centrifugal force, the sludge particles adhere to the inner wall of the drum, forming a solid ring layer; water, due to its lower density and weaker centrifugal force, forms a liquid ring layer only inside the solid ring layer.
The system features a compact structure, few auxiliary equipment, and a small footprint; high solids recovery rate and low turbidity of the separated liquid; it operates in a closed environment, resulting in a hygienic working environment with minimal odor; it requires no filter media, making operation and maintenance convenient and highly automated; and importantly, it requires little or no chemical conditioning agents. Although its power costs are relatively high, its overall operating costs are low.
