A system for washing mechanical parts polluted with hydrocarbons is described, which includes a) a cleaning fluid; b) an enzymatic complex that catalyzes the oxidative degradation of hydrocarbons coating the mechanical parts, wherein said enzymatic complex is located within a filter cartridge; and, c) a washing sink. By using the described system, daily degradation efficiency from 250 to 500 g of transformed hydrocarbons in CO2 and H2O is achieved. Moreover, a method to perform washing of mechanical parts is described.