Ultrafiltration membrane technology is a membrane permeation separation technique that purifies, separates or concentrates a solution between microfiltration and nanofiltration. The ultrafiltration membrane is an effective barrier for suspended particles and colloidal substances. At the same time, the ultrafiltration membrane can also effectively remove the two insects, algae, bacteria, viruses and aquatic organisms, thereby achieving the purpose of purifying, separating and concentrating the solution. Compared with traditional processes, ultrafiltration membrane technology has the advantages of low energy consumption, low operating pressure, high separation efficiency, large flux and recoverable useful substances in water treatment. It is widely used in drinking water purification, domestic sewage recovery, and oily wastewater. , water treatment such as pulp wastewater and seawater desalination.
The basic principle of ultrafiltration membrane technology
UltraFiltration (UF) is the solution under pressure, the solvent and part of the low molecular weight solute pass through the micropores on the membrane to the other side of the membrane, while the polymer solute or other emulsified micelles are trapped to achieve the solution. The purpose of separation. The mechanism of its retention is mainly sieving, but sometimes the chemical properties of the surface of the membrane (electrostatic action of the membrane) also play a role in entrapment. In the ultrafiltration separation, after a certain pressure is applied to the liquid, the polymer material and the colloidal substance are adsorbed by the membrane surface and the micropores once, and the pores are blocked and trapped, and the mechanical surface of the membrane surface is mechanically sieved. The ultrafiltration membrane blocks, while water, inorganic salts and low molecular substances penetrate the membrane.
The ultrafiltration membrane technology has a molecular weight cutoff of about 500 to 500,000, a corresponding pore diameter of about 0.002 to 0.1 μm, an operating static pressure difference of generally 0.1 to 0.5 MPa, and a diameter of the separated component of about 0.005 to 10 μm.
Ultrafiltration membrane technology features
1. The removal efficiency of impurities is high, and the water quality is much better than the traditional method.
2. Completely eliminate or greatly reduce the use of chemicals to avoid secondary pollution.
3. The system is easy to automate and has high reliability. The operation is simple, the facility is only turned on, and the two files are closed.
4. It has good chemical stability, acid resistance, alkali resistance and hydrolysis resistance, and can be widely used in various fields.
5. The heat-resistant temperature can reach 140 °C, it can be sterilized by ultra-high temperature steam and ethylene oxide; it can be used in a wide pH range, and can be used under strong acid and strong alkali and various organic solvents.
6. High filtration precision, can effectively remove 99.99% of harmful substances such as colloids, bacteria and suspended solids in water.
7. Compared with the cost of conventional water treatment system, the domestic sewage is treated by ultrafiltration to make the treated water quality better and reused. However, the industrial wastewater can not meet the standard due to the general technology, and the ultrafiltration technology can fully treat the wastewater.
Alarm Burglary Safe,Office Security Burglary Safes,Burglary Safety Box,Burglary Treasury Safes
Hebei Yingbo Safe Boxes Co.,Ltd , https://www.ybsafebox.com