Migration 20T electrodialysis water treatment equipment of the same name ① ions, the ion exchange membrane selective permeability often not be one hundred percent and therefore there will always be a small amount of counter ion-exchange membrane through; ② ion concentration diffusion, since the concentration compartment and desalination chamber there was a concentration of poor water purification equipment agents, there is always a small amount of diffusion of ions from the concentrating compartments migrate to pure water equipment reverse osmosis desalination chamber, thereby reducing the efficiency of dialysis; ③ water infiltration, although exchange membrane It is not allowed to pass through the solvent molecules, but due to the concentration difference among desalination chambers and concentrate chambers, would make some of the solvent molecules (the water) the concentrated osmotic; ④ electrodialysis of water, due to the hydration and ion formation electric double layer under a DC field, the water molecules can migrate from desalination chamber to the concentrating compartment; ⑤ water polarization ionizing water purification equipment, sometimes due to poor working conditions, will be forced to water and electricity from hydrogen ions and hydroxide ions They can enter through the exchange membrane concentrating compartments; ⑥ pressure water seepage, due to the difference in fluid pressure between the concentrating compartments and desalination chambers, forcing water molecules from the pressure side to the pressure side of the penetration. Obviously, these secondary electrodialysis process is unfavorable factors, but they can be avoided or controlled by varying operating conditions. White household water purifier ① polymer film forming method to be selected are compatible. For example, the preparation of the immersion casting membrane, the polymer must be dissolved in a solvent appropriate and safe. Combined with a film-forming polymer and methods shall be selected to obtain the performance and quality can be repeatedly reproduced ultrafiltration membrane. ② polymer shall have to meet specific application object properties. For example, a cellulose-based polymer, because of the application of biotechnology to meet the required hydrophilic low protein pollution requirements, but it can not afford alkali cleaning agent; polyether sulfone having excellent alkali resistance, suitable for cleaning applications required NaOH water purification equipment name, but it is strongly affected by protein contamination and less resistant to strong solvents and chlorine. ③ need commercially available polymer, a guaranteed supply, quality and affordable prices. ④ polymers need good film formers. The logical requirement ultrafiltration membrane production is very important. Properties of the film forming process and subject to the final film structure. The nature of the film-forming process and the final film structure and obviously subject to a flexible polymer, legislation compliance, interaction within the chain and the chain between the polar functional groups, semi-crystalline and amorphous like. The nature of the casting solution should have thermodynamic stability is intended for easy storage and casting operations, solidified into a glassy state (sufficiently high T8) or converted to semi-crystalline solid phase (with sufficient Godin.), And not having a form of rubber state the nature of the film. The latter, the film is too soft and compressible no practicality. It also requires between the polymer by the polymer / polymer interactions between solvent /, form a compatible blend, thereby expanding the scope and implementation of film-forming polymer modified polymer. PS, PES and PVDF ultrafiltration membrane has become an important polymer, the portion attributable to the compatibility of their brand of water purification equipment and other polymers (especially hydrophilic polymer) _ Technology _ Han Yue water purification equipment from Henan Yue Han Technology Limited. "Electronic products, computer hardware, office supplies, water treatment equipment, communications equipment, refrigeration set" preferred Henan Yue Han Technology Co., Ltd. (www.hnlyjd.com/), the company is located: Zhengzhou City, Tongbai Road East Dili Lake Garden Palace 8 Unit 1, Building 1602, over the years, the Han science and technology to provide customers with the best quality of service, Contact: Zhang Yan slippery. Welcome to the new and old customers call, letter, visit the guide, business negotiations. Yue Han Technology expect to be your long-term partner!