Pollutant Trap

A system for removing pollutants from a polluted liquid, the system comprising:

• a tank having a bypass chamber, a treatment chamber, an inlet port and an outlet port;
• a dividing wall located within the tank and thereby defining the bypass chamber and the treatment chamber, the dividing wall having an inlet opening, one or more outlet openings, a plurality of retaining rods forming a retention space located at least partially below the inlet opening, and a vertically-extending weir located between the inlet opening and the one or more outlet openings, wherein the inlet opening is positioned to receive the polluted liquid from the inlet port and the one or more outlet openings are positioned to output a cleaned liquid to the outlet port;
• and
• a float is provided in the treatment chamber and adapted to float in a retention space formed by the plurality of retaining rods, the float being adapted to rise against the inlet opening when a fluid level in the treatment chamber reaches a predetermined level to substantially block the inlet opening.