Seawater desalination treatment technology _ method

Comments · 3741 Views

Originally published as The Wrath of a Trapped Animal-Captive Persian Leopard Murder Leopard, a mysterious and elegant predator in nature, wears a beautiful "battle robe" of money spots that makes countless people fall for it, and is a natural master who quietly approaches and

Original Title: Treatment Technology of Seawater Desalination Since the 1950s, seawater desalination technology has become one of the important ways to develop new water sources. Different departments and fields have different requirements for water quality. Let's take a look at the desalination technology: 1. Distillation method of seawater desalination treatment technology: A method of heating water to 105 ° C to vaporize and then condensing the vapor to obtain distilled water. The device has the advantages of simple structure,molecular distillation systems, easy operation and good fresh water quality. Disadvantages: high energy consumption. 2. Method of seawater desalination treatment technology-electrodialysis method: By utilizing the selective permeability of anion and cation exchange membranes to anions and cations in water, a part of ions in water is transferred to another part of water under the action of an external direct current electric field to achieve the purpose of desalting. The key technology of this method is the development of a new type of ion exchange membrane. The ion exchange membrane is a functional membrane with a thickness of 0.5-1.0mm,wiped film distillation, and is divided into a positive ion exchange membrane (positive membrane) and a negative ion exchange membrane (negative membrane) according to the selective permeability. Electrodialysis is a process in which selectively permeable cation membranes and anion membranes are alternately arranged to form a plurality of mutually independent compartments for desalination of seawater, and the seawater in adjacent compartments is concentrated to separate fresh water from concentrated water. Electrodialysis can not only desalinate seawater, thin film distillation ,jacketed glass reactor, but also be used as a means of water quality treatment to contribute to the reuse of sewage. 3. Method of seawater desalination treatment technology-ion exchange method: A method for removing anions and cations in water by exchanging ions on ion exchange resin with ions in water. 4. Seawater desalination treatment technology — — reverse osmosis membrane method: Reverse osmosis, also known as ultrafiltration, is a membrane separation desalination method adopted in 1953. Seawater is separated from fresh water by a semipermeable membrane that allows only the solvent to pass through and not the solute. Under normal circumstances, fresh water diffuses to the seawater side through the semi-permeable membrane, so that the liquid level on the seawater side gradually rises until a certain height, which is called osmosis. 5. Method of seawater desalination treatment technology-membrane distillation desalination technology: Membrane distillation is a process of retrograde evaporation of heated seawater through a porous hydrophobic membrane (sometimes called a distillation membrane), with the evaporated vapor condensing on the other side of the membrane. The hydrophobic film acts as an interface between the liquid and the vapor. This distillation method is different from the conventional distillation apparatus, which greatly reduces or even eliminates the vapor space, but the hydrophobic membrane can not replace the heat exchange surface, and in the membrane distillation device,wiped film evaporator, the heat exchange surface with the same area as the membrane needs to be designed. At present, there are three kinds of membrane distillation devices: air gap type, direct contact type and scavenging type. Return to Sohu to see more Responsible Editor:.

laji00 24 w Yeezy Shoes Yeezy Supply Yeezy Shoes Yeezy Slides Yeezy Shoes Yeezy Shoes Yeezy Supply Yeezy Slides Yeezy Supply Yeezy Shoes Dior Outlet Christian Dior Dior Bags Gucci Outlet Chanel Shoesl Louis Vuitton Handbags NFL Jerseys NFL Shop NFL Jerseys NFL Shop Ray Ban Sunglasses jordan 1 Omega Watches Omega Watches Yeezy Supply Yeezy Adidas Yeezy Ray Ban Glasses Yeezy Shoes Yeezy Supply Yeezy Supply Louis Vuitton Outlet Louis Vuitton Louis Vuitton Handbags Yeezy Shoes Yeezy Shoes Yeezy 350 Moncler Coat Rolex Watches Rolex Watches Louis Vuitton Outlet Rolex Watches Yeezy Shoes Yeezy Supply Moncler Vest Yeezy 350 Yeezy 500 Yeezy 700 Yeezy 500 Yeezy 350 Yeezy Kids Yeezy 500 Yeezy 700 Yeezy Boost Yeezy Slides Moncler Outlet Yeezy Shoes Yeezy Supply