Today I had a breakthrough in my research.  I discovered the invention of graphene with microscopic holes in it that filters out salt from saltwater.  This material would be the heart of my prototype as removing salt from saltwater is normally a very complicated process.  The molecularly modified graphene could potentially solve the world's water problems.  My prototype consists of two main parts.  The first one is the actual canister that actually purifies the water.  This canister is about a foot tall with a six inch diameter.  Onn the top there isa piece of cloth that goes across the entire opening.  This can be changed however often the user wishes.  Its purpose is to filter out the big clumps of durt, seaweed, or whatever else might be in the water. The second level of filteration is the graphene itself.  This will filter out the salt content and possibly more (waiting for a response from a researcher I emailed).  The third filteration level is the store bought filter that filters out disease and other bacteria.  This is the biggesrt filter (10 inches tall).  It screws into the next piece of the filteration system, which is the bucket provided to the consumer with the purchase of the system.  There are three bupossible bucket sizes to buy: 5 gallon, 2 gallon, and 10 gallon.  The top piece of the filteration system will work with any of the bucket sizes.  Hopefully, tomorrow I will be able to start modelling.