A solid-liquid separation system having a filter cylinder, a filter cloth laying assembly, an assembly for carrying and moving the filter cylinder, a squeezing assembly, and an assembly for laying a filter cloth, unloading materials and rolling up a filter cloth. The assembly for carrying and moving the filter cylinder is located below the filtering cylinder and includes a working position A and a working position B, and the squeezing assembly is located above the filtering cylinder at the working position B. The filter cloth laying assembly includes a laying and folding component and a dispensing component, and the dispensing component is located above the filter cylinder. The laying and folding component is used for laying a filter cloth in the filter cylinder, and the dispensing component is used for spraying downward materials to be treated onto the filter cloth.

A filter element is provided. The filter element includes a filter media pack including an outer surface. The outer surface extending between a first flow face and a second flow face. The filter element also includes a polymeric coating applied to the outer surface of the filter media pack, wherein the polymeric coating is not a molded structure. In embodiments, the polymeric coating covers at least 25% of a span between the first flow face and the second flow face and has an average thickness of between 0.005 and 0.100 in. In other embodiments, the polymeric coating has a surface roughness of at least 50 in to provide an outer gripping surface. A method and system for applying the polymeric coating to the filter element are also provided.