| Subject | English | Portuguese |
| earth.sc., mech.eng. | liquid separator | separador de líquido |
| earth.sc., mech.eng. | liquid separator | separador de gotas |
| environ. | separator of light liquids | separador de líquidos leves |
| environ. | separator of light liquids A mechanical device for separating and removing residues from fuel and lubricating oil from waste water coming from filling stations and industrial plants in order to avoid pollution of water bodies; this system is based on the different specific weights of water and fuel residues that float on the water and can be easily removed | separador de líquidos leves |