Water treatment equipment, pure water treatment equipment, softened water treatment equipment, reverse osmosis equipment

Overview of reverse osmosis Hydra Energy reverse osmosis, also known as reverse osmosis, is a membrane separation operation that uses pressure difference as the driving force to separate solvent from a solution. Apply pressure to the material liquid on one side of the membrane. When the pressure exceeds its osmotic pressure, the solvent will reverse osmosis in the direction of natural penetration. As a result, the permeated solvent is obtained on the low-pressure side of the membrane, that is, the permeate is obtained, and the concentrated solution, that is, the concentrated solution, is obtained on the high-pressure side of the membrane. If reverse osmosis is used to treat seawater, fresh water will be obtained on the low-pressure side of the membrane, and brine will be obtained on the high-pressure side.
During reverse osmosis, the penetration rate of the solvent in the water treatment equipment, that is, the liquid flow energy, is where is the hydraulic permeability coefficient, which increases slightly as the temperature increases. The static pressure difference on both sides of the membrane is Osmotic pressure difference. The osmotic pressure of a dilute solution is where is the number of ions generated by ionization of solute molecules, is the molar concentration of the solute, is the molar gas constant, and is the absolute temperature. Reverse osmosis usually uses asymmetric membranes and composite membranes. The equipment used in reverse osmosis is mainly hollow fiber or roll-type membrane separation equipment.
The reverse osmosis membrane can intercept various inorganic ionic colloidal substances and macromolecular solutes in the water, thereby obtaining purified water. It can also be used for pre-concentration of macromolecular organic matter solutions. Due to its simple process and low energy consumption, reverse osmosis has developed rapidly in recent years. It has been widely used in seawater and brackish water, brine desalination boilers, water softening and wastewater treatment, and is combined with ion exchange to produce high-purity water. Its application scope is currently expanding, and it has begun to be used for the concentration of dairy juices and biochemical and biological preparations. separation and concentration.