Nutrient removal filtration system and method
AssigneeOldcastle Infrastructure, Inc.
InventorThomas Happel
Life of this patent
Estimating the term…
Abstract
Systems, devices, and methods for providing nutrient removals in an up flow filtration storm water system for treating water to very high clean levels using filtration media. A filtration media can be supported by a screen above a floor in a vault allows for incoming storm water to pass into a void space above the floor into the screen and filtration media and then out an outlet to the vault. The filtration media can include recyclable and/or natural particles. Layers of river rocks can be placed on top of and below the filtration media. The captured debris can drop to the floor. The long lasting filtration media can be cleaned by being backwashed.
Claims20
A nutrient removal filtration system, comprising:
- a generally horizontal lower screen supported above a bottom of an in-flow vault, with a void space formed between the bottom and the screen;
- a filtration media resting on the screen, wherein storm water flowing into the vault through an inlet passes into the void space and up through the screen and filtration media and out the vault through an outlet, so that contaminants, metals, nutrients and solids are removed from the storm water by the filtration system.
A nutrient removal filtration system, comprising:
- a generally horizontal lower screen supported above a bottom of a treatment vault, with a void space formed between the bottom and the screen;
- a filtration media resting on the screen, wherein storm water flowing into the vault through an inlet passes into the void space and up through the screen and filtration media and out the vault through an outlet, so that contaminants, metals, nutrients and solids are removed from the storm water by the filtration system;
- a floor on the bottom of the vault wherein sediment and debris from the screen and media falls and slides to the floor,
A nutrient removal filtration system for storm vaults comprising:
- a horizontal screen supported above a bottom of a treatment vault, with a void space formed between the bottom and the screen;
- a filtration media resting on the screen;
- layers of rocks on the screen above and below the filtration media, wherein storm water flowing into the vault through an inlet passes into the void space and up through the screen and filtration media and out the vault through an outlet, so that contaminants, metals, nutrients and solids are removed from the storm water by the filtration system;
- a floor on the bottom of the vault
- wherein sediment and debris from the screen and media falls to the floor.
Dependencies are inferred from the claim text.