Patent ID: 8287726
Filing Date: 2012-10-16
Classification: B01D,E03F

Abstract:
1. A water runoff system for removing suspended particles from a liquid, the system comprising: a filter vessel defining an internal chamber; a deck positioned within the internal chamber and dividing the internal chamber into an upper chamber and a lower chamber, the deck having a plurality of holes formed therein, each hole having a filtration element therein; an inlet line for introducing a liquid into the lower chamber; an outlet above the deck for permitting liquid to exit the upper chamber; a ridge positioned on a top surface of the deck, the ridge forming a continuous perimeter on the top surface of the deck; a plurality of filtration elements positioned within the perimeter; and at least one filtration element positioned outside the perimeter, the filtration element having a lid with at least one hole sized to induce a pulsing/vibration effect during backwashing to assist in maintaining cleanliness of the filtration elements; wherein when flow subsides from the inlet, liquid that has accumulated above the deck and inside of the perimeter flows downward through the filtration elements located inside the perimeter, flowing downward and into the lower chamber and up through the filtration element positioned outside the perimeter and through the at least one hole in the lid, thereby backwashing filter elements located inside the perimeter with filtered liquid; and wherein pressure caused by the downward flow causes the water flowing through said at least one hole in the lid of the filter element positioned outside the perimeter to pulse, thereby creating a vibration that shakes the filtration elements.