First, the principle of reverse osmosis through a thin film material is known as selective semipermeable membrane, typically only the solute through the solvent impermeable membrane is called the ideal semi-permeable membrane. When the same volume of dilute solution such as fresh water) and the concentrated solution (e.g., saline) were placed on both sides of a semipermeable membrane, a dilute solution of the solvent will naturally pass through the semipermeable membrane spontaneously flow to the concentrated solution side, which a phenomenon known as osmosis. When osmotic equilibrium, liquid concentrated solution side will be above the level of a dilute solution of a certain height, that the formation of a pressure, this pressure is the osmotic pressure. Osmotic pressure of the solution depends on the size of the inherent properties, i.e., irrespective of the nature of the semipermeable membrane with the solution of the type, concentration and temperature. When applying a pressure greater than the osmotic pressure of the solution to one side, the direction of flow of the solvent to penetrate the direction opposite to the original, starting from a concentrated solution side to a dilute solution flow, a process known as reverse osmosis. Reverse osmosis is a reverse osmotic migration movement, without the aid of a pressure-driven selection of the semipermeable membrane trapping the solute in the solvent from the solvent separation method, it has been widely used to purify various solutions shrink and dissolve, the most common application example is in the water treatment process, the water using reverse osmosis technology ions, bacteria, viruses, and colloidal organic matter and other impurities removed to obtain high-quality pure water. Second, the reverse osmosis reverse osmosis unit Overview: Reverse osmosis is nearly nineties developed a membrane separation technology, which mainly use the principle of a semipermeable membrane permeation, giving it a certain way by applying a pressure, anti-natural force penetration direction, so that a concentrated solution to dilute aqueous solution of penetration. By means of reverse osmosis element consisting of reverse osmosis unit. The company uses US imports of reverse osmosis membrane, 99.7% removal of inorganic salts, heavy metals, 100% removal of colloids, microorganisms, organic matter, heat, viruses, bacteria and the like. Machine wash RO membrane based automatic timing system, on-line monitoring of water quality and display device operation. Now widely used in the pharmaceutical, chemical, power station boiler, the electronics industry and other prospects. Ro is a traditional reverse osmosis filtration technology based on reverse osmosis water for further processing, you can remove the water turbidity, color, hardness, radium, uranium and other radioactive elements, various inorganic ions, particularly harmful arsenic , copper, cadmium, barium, chromium, lead, mercury, manganese and other metal ions and cyanide, fluoride and other chemicals, the water back to the pure. Because of equipment with a small, fully automatic operation, etc., so you can adapt to various installation conditions, modern homes, hotels, restaurants, hospitals and other places all need the best quality of water treatment equipment. Third, the system control unit RO unit control system consists of pretreatment tanks, desalting water tank, liquid level sensors, booster pump outlet pressure, high-pressure pump outlet pressure, strong water pressure, fresh water pressure instrument display, import and export of low voltage high-pressure pump, intake water conductivity, water conductivity, on-line monitoring the concentration of water and fresh water, backwater flow display and other instruments, sensors can be run at any time to monitor pressure device, flow and conductivity, run automatically according to the pre-treatment tank and desalination tank level, When the system is equipped with a dosing device PH adjustment, automatic control dosing devices running timeliness automatically adjust add acid, acid base unit amount, when the system fails and tank level, pump inlet pressure ultra or super high out of the water when the conductivity high, the control system will occur audible alarm and automatically shut down pure.