Sudong filter press adopts the principle of solid-liquid separation to achieve effective treatment of wastewater, filter press is generally used as a process in wastewater treatment, according to the nature of wastewater in the early stages need to be dosed, biochemical, sedimentation and a series of operations filter presses use pressure and filter cloth on the separation of solid and liquid substances in the wastewater in the end, the solid substances in the filter press filter plate formed in the chamber to form a cake; the liquid will be discharged from the filter press equipment through the pipeline and the water outlet valve. The liquid is discharged from the filter press through pipes and water valves.