Bulk container

Abstract

A bulk container and method of use for storage of at least two substances includes a first container for containing a first substance, and a second container for containing a second substance. The first container has an outer surface including a recess, and the second container has a shape corresponding with the recess of the first container. The second container is coupled with the recess to form a container assembly. The first substance and second substance are kept separate when in the first and second containers respectively.

1 . A bulk container for storage of at least two substances comprising:
 a first container adapted to contain a first substance, wherein an outer surface of said first container includes a recess;   a second container adapted to contain a second substance, said second container having a shape corresponding with said recess;   wherein said second container couples with said recess to form a container assembly; and   wherein said first substance and said second substance are kept separate when in said first container and said second container respectively.   
     
     
         2 . The bulk container as claimed in  claim 1 , further comprising a cage for said first and second containers, said cage comprising:
 a base portion supporting a bottom portion of said first container;   a wall substantially surrounding said first container; and   an upper outer perimeter extending above said first container when said first container is in said cage.   
     
     
         3 . The bulk container as claimed in  claim 2  wherein said upper outer perimeter of said cage is substantially open, wherein said first container is lowerable in to said cage through said opening. 
     
     
         4 . The bulk container as claimed in  claim 3  wherein said recess is at a top portion of said first container, wherein said second container is removable through said opening at said upper outer perimeter of said cage. 
     
     
         5 . The bulk container as claimed in  claim 2  wherein said cage comprises a plurality of apertures passing through said wall at said upper outer perimeter. 
     
     
         6 . The bulk container as claimed in  claim 2  wherein said recess of said first container is located adjacent said wall of said cage when said first container is in said cage, wherein said second container is between said outer surface of said first container and an inner surface of said wall when said second container is coupled with said recess. 
     
     
         7 . The bulk container as claimed in  claim 1  wherein said first container comprises a drain valve assembly at a bottom portion of said first container. 
     
     
         8 . The bulk container as claimed in  claim 1  wherein said first container has a capacity of at least 454 liters. 
     
     
         9 . The bulk container as claimed in  claim 8  wherein said first container has a capacity of less than 3000 liters. 
     
     
         10 . The bulk container as claimed in  claim 1  wherein at least one of said first container and said second container is made of an elastomeric material. 
     
     
         11 . The bulk container as claimed in  claim 10  wherein said elastomeric material comprises polyethylene. 
     
     
         12 . The bulk container as claimed in  claim 1  wherein said first container comprises a sealable aperture at a top portion of said first container. 
     
     
         13 . The bulk container as claimed in  claim 1  wherein an outer perimeter of said first container comprises four corner portions, and said recess comprises four recesses each located at a respective corner portion, wherein four of said second containers are located in respective recesses. 
     
     
         14 . A bulk container for separately storing at least two substances comprising:
 a first container, wherein an outer surface of said first container includes a recess;   a second container, said second container having a shape corresponding to said recess;   a cage having a base portion supporting said first container, a wall substantially surrounding said first container and said second container, and an upper outer perimeter extending above said first container when said first container is in said cage; and   wherein said second container couples with said recess between said wall of said cage and said outer surface of said first container to form said bulk container.   
     
     
         15 . A method of separately storing at least two substances comprising:
 placing a first substance in a first container, said first container having a recess;   placing a second substance in a second container, said second container being shaped to correspond with said recess;   placing said second container in said recess to form a container assembly.   
     
     
         16 . The method as claimed in  claim 15  further comprising lowering said first container in to a cage, wherein a wall of said cage substantially surrounds said first container when in said cage. 
     
     
         17 . The method as claimed in  claim 16  further comprising lowering said second container in to said recess, wherein said recess defines a space adapted to receive said second container, said space being between an interior surface of said wall and an outer surface of said first container. 
     
     
         18 . The method as claimed in  claim 17  further comprising:
 transporting said bulk container to a destination;   removing said second container from said recess at said destination; and   placing said second substance in fluid communication with said first substance to form a mixture of said at least two substances.   
     
     
         19 . The method as claimed in  claim 18  further comprising draining at least a portion of said mixture from said first container through a drain valve at a bottom portion of said first container. 
     
     
         20 . The method as claimed in  claim 15  wherein placing said first substance in said first container comprises flowing said substance through a sealable aperture in a top portion of said first container.