The unit is a universal equipment designed to clean various process liquids from polymers, solid particles, residual oil/oil content by flocculation, coagulation, and subsequent mechanical removal by a built-in centrifuge. The dewatering system is based on a 20-foot container, is fully automated, and equipped with compartments with flocculants and coagulants, which are fed into the flow by dosing pumps. The scope of application includes wastewater, liquid waste, spent drilling mud, and others. The dewatering system is supplied in a standard international class transport container of increased capacity, which ensures safe transportation of the system by water and land. The system includes all standard components of the dewatering system, including a high-speed decanting centrifuge.