GOSK Series Oil Water Separator has been developed based on LAND ECO’s exclusive patent product GOS bi-directional flow surface polymerized high-precision oil water separator (China Patent ZL200510034499.9), for the effluent treatment from air compressor system. As the wetting angle on the contact surface between different solid material and different liquid is different. When the wetting angle difference of two types of liquid on the same solid material surface is greater than 70 degree, these liquid can be separated. Hence, considering the solid material with hydrophobic & lipophilic property as media, the oil droplets would be accumulated, coalesce and separated.