Method of constructing a filtering pavement surface
AssigneeUnit Process Technologies, LLC
InventorJohn J. Sansalone
Life of this patent
Estimating the term…
Abstract
A sorptive-filtration system for removing at least one of negatively or positively charged ions, complexes or particulates from an aqueous stream. The system includes a) flow formed substantially from at least one of rainfall-runoff or snowmelt-runoff; b) a filter containment communicating with the runoff stream such that at least part of the stream passes through the filter containment; and c) a granular filter media disposed within the filter containment, the filter media having an amphoteric material applied thereto, wherein the amphoteric material comprises a metal selected from at least one of Fe, Al, Mn, or Si.
Claims31
A method of constructing a roadway having a filtering shoulder material comprising the steps of:
- a. placing pavement to form at least one driving lane;
- b. placing a shoulder material adjacent to said driving lane such that rainwater runoff from said driving lane flows onto said shoulder material and percolates therethrough;
- c. said shoulder material comprising a hydraulic conductivity of at least about 0.001 cm/sec and an amphoteric compound bonded thereto.
A method of constructing a filtering pavement surface comprising the steps of:
- a. placing a first pavement section having a first hydraulic conductivity;
- b. placing a filter section adjacent to said first pavement section such that rainwater runoff from said first pavement section flows onto said filter section and percolates therethrough;
- c. said filter section comprising (i) a second hydraulic conductivity, greater than said first hydraulic conductivity and at least about 0.001 cm/sec, and (ii) an amphoteric compound bonded thereto.
Dependencies are inferred from the claim text.