Portable containment units and methods for making same

Abstract

Portable containment units and methods for making same are described herein. The portable containment unit can include a liner containing a geotextile material and having an outer perimeter. A wall assembly can be adhered to an upper surface of the geotextile material on the outer perimeter of the liner. The wall assembly can include an open-cell foam material. An elastomeric material can be coated onto the liner and the wall assembly to form the portable containment unit.

What is claimed is: 
     
         1 . A containment unit, comprising:
 a liner comprising a geotextile material and an outer perimeter;   a wall assembly adhered to an upper surface of the geotextile material and on the outer perimeter of the liner to form a base structure, the wall assembly comprising a foam material; and   a layer of elastomeric material encapsulating the base structure.   
     
     
         2 . The containment unit of  claim 1 , wherein the foam material is a memory foam material. 
     
     
         3 . The containment unit of  claim 1 , wherein the foam material is a rigid foam material. 
     
     
         4 . The containment unit of  claim 2 , wherein the foam material is a polyurethane foam. 
     
     
         5 . The containment unit of  claim 1 , wherein the wall assembly has a height of at least about 1 inch and the geotextile material has a density from about 4 oz/yd 2  to about 16 oz/yd 2 . 
     
     
         6 . The containment unit of  claim 1 , wherein the wall assembly is adhered to the upper surface of the geotextile material via a fluid permeable adhesive. 
     
     
         7 . The containment unit of  claim 1 , wherein the wall assembly comprises two or more segments that are adhered to one another via a fluid permeable adhesive. 
     
     
         8 . The containment unit of  claim 1 , wherein the layer of elastomeric material creates a fluid impermeable barrier and adheres directly to an outer surface of the base structure. 
     
     
         9 . The containment unit of  claim 8 , wherein the elastomeric material is polyurea. 
     
     
         10 . The containment unit of  claim 9 , wherein the layer of polyurea has a thickness of about 30 mil to about 150 mil. 
     
     
         11 . A containment unit, comprising:
 a liner having an outer perimeter;   a wall assembly adhered to an upper surface on the outer perimeter of the liner to form a base structure, the wall assembly and the liner comprising an open-cell foam material; and   a layer of elastomeric material encapsulating the base structure.   
     
     
         12 . The containment unit of  claim 11 , wherein the open-cell foam material is a polyurethane foam. 
     
     
         13 . The containment unit of  claim 11 , wherein the wall assembly is adhered to the liner via a fluid permeable adhesive. 
     
     
         14 . The containment unit of  claim 11 , wherein the wall assembly comprises two or more segments that are adhered to one another via an adhesive. 
     
     
         15 . The containment unit of  claim 11 , wherein the elastomeric material layer is a fluid impermeable barrier layer that at least partially penetrates the open-cell foam material of the wall assembly and the liner, and the elastomeric material is polyurea. 
     
     
         16 . A method of constructing a containment unit, the method comprising:
 connecting two or more wall segments to form a wall assembly, each of the wall segments comprising an open-cell foam material;   connecting the wall assembly to an upper surface of an outer perimeter of a liner to form a base structure, the liner comprising a geotextile material or a foam material; and   spraying the base structure with an elastomeric material to form the containment unit.   
     
     
         17 . The method of  claim 16 , wherein the open-cell foam material is a polyurethane foam. 
     
     
         18 . The method of  claim 16 , wherein connecting the two or more wall segments to form the wall assembly comprises gluing the two or more wall segments together with an adhesive. 
     
     
         19 . The method of  claim 16 , wherein connecting the wall assembly to the upper surface of the outer perimeter of the liner comprises gluing the wall assembly to the upper surface with an adhesive. 
     
     
         20 . The method of  claim 16 , wherein the elastomeric material comprises polyurea.