Reverse osmosis equipment is the raw water through the fine filter, granular activated carbon filter, compressed activated carbon filter, and then pressurized by the pump, the use of pore size 1/10000μm (equivalent to the size of Escherichia coli 1/6000, 1/300 viruses) of the reverse osmosis membrane (RO membrane), so that a higher concentration of water into a very low concentration of water (that is, pure water) and higher concentration of water, low concentration of water use, high concentration of water discharge or resource reuse, while industrial pollutants, heavy metals, bacteria, viruses and other impurities mixed in large quantities of water all the time, at the same time, the industrial pollutants, heavy metals, bacteria, viruses and other impurities mixed in the water all the time. Water, low concentration of water use, high concentration of water discharge or resource reuse, at the same time will be industrial pollutants, heavy metals, bacteria, viruses and a large number of impurities mixed into the water are isolated, so as to achieve the drinking provisions of the physical and chemical indicators and hygiene standards, the output of the cleanest to the purest water, is the human body in time to replenish high-quality water of the best choice. As RO reverse osmosis technology to produce water purity is currently mastered by mankind in the manufacture of drinking water in all the highest water technology, cleanliness almost 100%, so people call this water machine for reverse osmosis water purification machine. Of course, there are some higher purity of pure water manufacturing technology (such as EDI, polished mixed bed, etc.) does not apply to the production of drinking water.
Pure water equipment, simply put, is the production of pure water equipment. Pure water is widely used for drinking, chemical, medical, farming, planting, food, beverage and so on.
Reverse osmosis equipment applies membrane separation technology, can effectively remove charged ions, inorganic substances, colloidal particles, bacteria and organic substances in water. It is the best equipment for high purity water preparation, desalination of brackish water and wastewater treatment process. Widely used in electronics, medicine, food, textile, chemical industry, power generation and other fields.
Reverse osmosis, also known as reverse osmosis, is a membrane separation operation in which the solvent is separated from the solution by a pressure difference as the driving force. Pressure is applied to the fluid on one side of the membrane, and when the pressure exceeds its osmotic pressure, the solvent will reverse osmosis against the direction of natural osmosis. Thus, in the low-pressure side of the membrane to get through the solvent, that is, permeate; high-pressure side to get concentrated solution, that is, concentrate. If you use reverse osmosis to treat seawater, the low-pressure side of the membrane to get fresh water, the high-pressure side of the brine.
Reverse osmosis, the permeation rate of the solvent that the energy of the liquid flow N is:
N=Kh(Δp-Δπ)
In the formula, Kh is the hydraulic permeability coefficient, which increases slightly with the temperature; Δp is the difference in static pressure between the two sides of the membrane; Δπ is the difference in the osmotic pressure of the solution on both sides of the membrane. The osmotic pressure π of a dilute solution is:
π=iCRT
Where i is the number of ions generated by ionization of the solute molecules; C is the molar concentration of the solute; R is the molar gas constant; T is the absolute temperature.
Reverse osmosis usually uses asymmetric and composite membranes. The equipment used for reverse osmosis is mainly hollow fiber type or rolled membrane separation equipment.
Reverse osmosis membrane can intercept a variety of inorganic ions, colloidal substances and macromolecular solutes in water, so as to obtain clean water. Can also be used for macromolecule organic solution pre-concentration. Because of the reverse osmosis process is simple, low energy consumption, nearly 20 years has been rapid development. Now large-scale application in seawater and brackish water (see brine) desalination, boiler water softening and wastewater treatment, and with ion exchange combined with the production of high-purity water, the scope of its application is expanding, has begun to be used for dairy products, fruit juice concentration, as well as biochemical and biological preparations of separation and concentration.