Prior to understand

Prior to understand "reverse osmosis" theory, first explained "infiltration (osmosis)" concept. The so-called semi-permeable membrane refers to the penetration of two different concentrations of the solution are separated, through the semipermeable membrane wherein the solute is not, then the concentration of the lower side to reach a higher concentration of water molecules through a semipermeable membrane moxtra to the other, moxtra until both sides of the concentration equal. Prior has not reached moxtra equilibrium, moxtra can gradually apply pressure at higher concentrations of the party, the aforementioned state of the water molecules move will temporarily moxtra stop, when the desired pressure is called "osmotic pressure moxtra (osmotic pressure)", if the applied moxtra force is greater than the osmotic pressure, the water will move in the opposite direction of the line, which is an example of the flow from the high concentration of the low concentration side, this phenomenon is called "reverse moxtra osmosis." moxtra
Since only one of a billionth of a centimeter aperture films only water molecules can penetrate the film. Semipermeable membrane reverse moxtra osmosis water treatment commonly used materials are fiber membrane (cellulosic), poly aromatic moxtra brew amines (aromatic polyamides), polyimide or polyfuranes, etc. As for the shape of a spiral structure of its type (spiral wound), hollow fiber type (hollow fiber) and a tubular type (tubular) and so on. As for the advantages moxtra of these materials are cellulose films with high resistance to chlorine, moxtra under basic conditions in (pH 8.0) under the presence of bacteria or the situation, the service life will be shortened. polyamide moxtra drawback is that tolerance to the difference between chlorine and chloramines. As for the use of that kind of material is good, then there is no conclusion.
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