Differences between MBR Membrane and Ultrafiltration Membrane

In today's water treatment field, MBR membrane and ultrafiltration membrane are two commonly used water treatment technologies. Although they both play important roles in the water treatment process, there are obvious differences in technical principles, application fields, performance characteristics, etc. This article will elaborate on the MBR membrane and the ultrafiltration membrane to help readers better understand the differences between the two technologies.

MBR (Membrane Bioreactor) technology is a new type of sewage treatment and purification technology. It mainly realizes purification through microbial action and filtering media to achieve the purpose of water recovery and reuse. The most core part is the MBR membrane, which is mainly responsible for intercepting the active sludge and solid substances in the bioreactor. Therefore, the performance of the MBR membrane directly determines the efficiency of sewage treatment. The characteristics of this membrane are usually small pore size, which can effectively remove pollutants such as bacteria, viruses, heavy metal ions, etc. in water. Its core technologies include ultrafiltration technology, active sludge separation technology, etc. At the same time, the MBR membrane has the characteristics of strong pollution resistance and easy cleaning. Therefore, MBR technology is widely used in urban sewage treatment and industrial wastewater treatment and other fields. The feature of MBR technology is that it can achieve a deeper purification effect and produce higher-quality water. With the progress of technology, the application range of MBR membranes is becoming wider and wider.

The ultrafiltration membrane is a commonly used filtering medium in the field of water treatment. Its working principle is to screen and intercept impurities in water through the microporous structure on the membrane surface to achieve the purpose of purifying water quality. The pore size of the ultrafiltration membrane is usually at the nanometer level, which can remove suspended substances, bacteria, viruses and other microbial pollutants in water. The filtering accuracy of the ultrafiltration membrane is relatively high, which can retain the mineral components in water while removing harmful substances. Ultrafiltration technology is widely used in drinking water treatment, industrial water treatment and other fields. Compared with other water treatment technologies, ultrafiltration technology has the advantages of low energy consumption, simple operation, and low maintenance cost.

Although the MBR membrane and the ultrafiltration membrane are widely used in the field of water treatment, there are significant differences in their applications. Firstly, in terms of application fields: the MBR membrane is mainly used in urban sewage treatment and industrial wastewater treatment and other fields, and its deeper purification effect can produce higher-quality water; while the ultrafiltration membrane is widely used in drinking water treatment, industrial water treatment and other fields, mainly removing suspended substances and microbial pollutants in water. Secondly, in terms of filtering accuracy: the filtering accuracy of the MBR membrane is relatively high, which can remove bacteria, viruses and other microbial pollutants in water; the filtering accuracy of the ultrafiltration membrane is relatively low, mainly removing suspended substances and some microbial pollutants. Finally, in terms of performance characteristics: the MBR membrane has the characteristics of strong pollution resistance and easy cleaning; the ultrafiltration membrane has the characteristics of good chemical stability and strong acid and alkali resistance.