Gas Flotation Water Treatment System and Flow Straightener Therefore

A water treatment system comprising:

• a tank having an elongated shape with two opposite ends and two transversally opposite sides;
• a flocculation chamber at one of the opposite ends of the tank, the flocculation chamber having at least one treated water inlet and a mixer;
• a separation chamber adjacent to the flocculation chamber inside the tank, the separation chamber having at least one treated water outlet;
• a transversally-oriented wall forming an overflow baffle and extending upwardly between the flocculation chamber and the separation chamber, the transversally-oriented wall having an upper edge;
• a transition fluid passage extending between the upper edge of the wall and a water level in the tank;
• a plurality of vanes being vertically and longitudinally oriented, parallel to one another and transversally interspaced from one another along the upper edge of the wall, the vanes extending in the transition fluid passage in at least one of the two transversally opposite sides of the tank.