Closed loop surface cleaning system
AssigneePro Earth, L.L.C.
InventorThomas A. Page
Life of this patent
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Abstract
A method for removing contaminants from a surface such as pavement using a portable closed-loop system which is transported to the location to be cleaned by a vehicle. The method includes storing a volume of fluid in a clean tank, pumping the fluid to a cleaning head, blasting the surface to be cleaned with the fluid, suctioning the contaminants from the surface, removing suspended and colloidal contaminants, removing hydrocarbons, and returning this fluid to the clean fluid tank for recirculation through the system.
Claims15
A method of removing contaminants from a surface utilizing a portable closed-loop system comprising the steps of:
- transporting a vehicle supporting the closed-loop system to a location having the surface to be cleaned;
- storing a volume of a fluid in a clean fluid tank;
- pumping the fluid to the surface cleaning head;
- blasting the surface to be cleaned with the fluid to remove the contaminants therefrom;
- suctioning a contaminated fluid from the surface;
- removing suspended and colloidal contaminants from the contaminated fluid by passing said fluid through a first filter system;
- removing hydrocarbons from the contaminated fluid by passing said fluid through a second filter system;
- and
- returning the fluid having the hydrocarbons and suspended and colloidal contaminants removed to the clean fluid tank for recirculation throughout the closed-loop system.
A method of removing contaminants from a surface utilizing a portable closed-loop system comprising the steps of:
- transporting a vehicle supporting the closed-loop system to a location having the surface to be cleaned;
- storing a volume of a fluid in a clean fluid tank;
- pumping the fluid to the surface cleaning head at a pressure of at least about 4,500 psig;
- blasting the surface to be cleaned with the fluid to remove the contaminants therefrom;
- suctioning a contaminated fluid from the surface;
- moving the contaminated fluid to a contaminated fluid tank;
- removing solid particulate contaminants from the contaminated fluid tank;
- removing suspended and colloidal contaminants from the contaminated fluid by passing said fluid through a first filter system;
- removing hydrocarbons from the contaminated fluid by passing said fluid through a second filter system;
- and returning the fluid having the hydrocarbons and suspended and colloidal
- contaminants removed to the clean fluid tank for recirculation throughout the closed-loop system.
A method of removing contaminants from a surface utilizing a portable closed-loop system comprising the steps of:
- transporting a vehicle supporting the closed-loop system to a location having the surface to be cleaned;
- storing a volume of a fluid in a clean fluid tank;
- pumping the fluid to the surface cleaning head;
- blasting the surface to be cleaned with the fluid to remove the contaminants therefrom;
- transporting the surface cleaning head across the surface;
- suctioning a contaminated fluid from the surface;
- moving the contaminated fluid to a contaminated fluid tank;
- dropping out particulate from the contaminated fluid in the contaminated fluid tank;
- pumping the contaminated fluid from the contaminated fluid tank to a filter system;
- filtering suspended and colloidal contaminants from the contaminated fluid by passing said fluid through a first filter of the filter system;
- removing hydrocarbons from the contaminated fluid by passing said fluid through a second filter of the filter system;
- and
- returning the fluid having the hydrocarbons and suspended and colloidal contaminants removed to the clean fluid tank for recirculation throughout the closed-loop system.
Dependencies are inferred from the claim text.