| 摘要 |
<p>An installation for the removal of pollutant materials and/or substances contained in water streams is provided, comprising the sequential implantation of : -a line of air diffusers (10) disposed on the bottom of the water stream and transversal thereto (1), simultaneously promoting the aeration and revolving of the water stream and also the flotation of the coarse residues (RG) are removedfrom the water stream (1); downstream and at a certain distance of said waste collecting net (20) a suspended structure metallic (30) is disposed transversal to the water stream (1) on which are mounted at least three injection curtains (40, 40a, 40b) that are selectively and automatically actuated, spaced apart and sandwiched between homogenization diffusers (50), the first curtain (40) being responsible for the injection of coagulants; the second curtain (40a) being responsible for the injection of polymers and the third curtain of injection (40b) being responsible for the micro-aeration, wherein the aggregated particles and those of larger sizes are subjected to at least a stage of supersaturated dissolution of water/air that when depressurized set the micro-bubbles free, thus generating a flotation length (MF) in said water stream, wherein the floated material is carried along by longitudinal flexible barriers (13), to a transversal dragging alignment (60), thus promoting the concentration of said floated material (L) and the removal thereof to restricted area remote from the water stream (1) by a pumping action.</p> |
