Patent ID: 7897047
Filing Date: 2011-03-01
Classification: B01J,C05D,C05F,C05G,Y02A,Y10S

Abstract:
1. A green roof stormwater treatment system for a building on a site comprising: a protection layer installed on a roof of a structure for waterproofing and insulating the roof; a pollution control mix layer on the protection layer for filtration and sorption of solids and dissolved materials found in stormwater, the pollution control mix consisting of at least two of recycled tires, sand, compost, peat and sawdust media for removing phosphorus; a growing media on top of the pollution control mix for growing vegetation on the green roof and filtering the stormwater passing through the growing media; an irrigation system for extracting stored filtered stormwater and irrigating the vegetation; and a cistern to store the runoff stormwater between irrigation events and recycling runoff stormwater by irrigating the green roof with the stored stormwater to enhance hydrologic related factors including evapotranspiration, the filtering abilities of the plants and growing media, and the stormwater holding abilities of the plants and growing media, and to reduce the volume of stormwater runoff from leaving the site.