GRADIENT PLATE PRECIPITATOR

PROBLEM TO BE SOLVED: To provide a gradient plate precipitator which allows air bubbles generated by air cleaning to uniformly ascend along the rear surface of a gradient plate by disposing holes on a reinforcing member which is fixed to the gradient plate, as a result, generates a downward water stream on other gradient plates, smoothly slides flocs attached to the gradient plate downward and removes the same. SOLUTION: In this gradient plate precipitator, a plurality of gradient plates 11 are separated with a prescribed space and are juxtaposed, and the reinforcing members 12 for reinforcing the gradient plates 11 are fixed on the rear surfaces of the gradient plates 11. Therein, further, the holes 13 for passing the air bubbles supplied from the lower side of the gradient plates 11 are disposed along the gradient plates 11 on the reinforcing members 12.