First of all, let me start by saying that regardless of the scientific-sounding name of this process, it is incredibly simple. Think back to your days in high school – do you remember what Osmosis is? The textbook definition of Osmosis is the diffusion of water through a semi-permeable membrane from an area of low solute concentration to an area of high solute concentration.ro membranes has some nice tips on this.
Let’s consider a standard kitchen faucet tied into the standard Big City, USA water lines. When you turn the water on, the water begins to flow. All throughout the pipes, there is muck, grime, salts, and even heavy metals – we’ll call these pollutants the solutes. Since water has a natural affinity to gravitate towards an area of high solute concentration, your water has actively picked up all of this garbage on its way out of your faucet. Consider the distance the water has to travel and all of the stuff your pipes may have in them – a scary, yet thought provoking picture.
Now, let’s look at the same scenario – only difference this time is that we’ve installed a Reverse Osmosis filter to the faucet. By utilization the hydrostatic (water) pressure that naturally exists in your home plumbing, the Reverse Osmosis filter forces the filthy water against a very selective membrane, only allowing the smallest and most harmless of molecules to pass through along with your pure, clear water. Since the system is pressure based, it requires no external energy source – you won’t need to hire an electrician to set this thing up.
The Reverse Osmosis technology is reliable and has been in existence for a while now through various manifestations. The United States & Canadian militaries have been using Reverse Osmosis water purifiers for years now to support their engagements in areas where freshwater is not readily available. In overseas deployments, they have used portable Reverse Osmosis water treatment plants to desalinate sea water or to purify brackish water. This proven technology has been field tested and is now deemed reliable enough for commercial use.
I’ll conclude this with an analogy. Consider reverse osmosis to be a lot like cooking pasta. Once the pasta is cooked, you put it in a strainer to separate the bulky, heavy noodles (solutes) from the water they were boiling in (solvent). Thus, you are using pressure (in this case the gravity of pouring the pasta & water mixture into a strainer) to separate the solvent from the high concentration of solutes. I highly encourage anyone, whether interested or skeptical, to do a little investigating and look around at various Reverse Osmosis filtration systems – you won’t be disappointed!