Restrictive up flow media filter with servicing system
US10384956B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 25, 2017 |
| Grant date | Aug 20, 2019 |
| Priority date | — |
| Expiry date | Jul 25, 2037 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F2303/16
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Vaults, boxes, chambers, systems, and methods of treatment systems to capture pollutants from storm water runoff and prevent the conveyance of these pollutants from entering a receiving water body or landscape area, which is designed to be a part of a local permanent storm water drainage infrastructure. The system enhances the removal efficiency of almost any type of filtration media by increasing contact time between storm water runoff and the media, and also offers an easy and inexpensive method for serving the media, without having to remove or replace the media. A media filter can include a bottom screen, a media layer, and at least one top lid that can be opened to allow for backwashing of the media layer without removing the media layer from the filter. A servicing system can include pivotal spray heads to pivot to parallel positions over a sloped floor to flush debris toward easy to reach locations to be vacuumed, and vertical spray heads which can break up debris bridges.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.