There are several kinds of membranes in MBR, what are their characteristics?

There are several types of mbr membranes:

1, MBR membrane can be divided into ultrafiltration membrane and microfiltration membrane according to pore size, and hollow fiber membrane, flat membrane and tubular membrane according to physical form. Hollow fiber membrane can be divided into curtain membrane and column membrane, as well as lined hollow fiber membrane and unlined hollow fiber membrane. According to the use state, it can be divided into two types: immersion type mainly refers to hollow fiber curtain membrane and flat membrane, external type mainly refers to tubular membrane and cylindrical hollow fiber membrane, and cylindrical hollow fiber membrane has no lining.

2. Due to the different performance of membrane modules, MBR can be divided into internal pressure type and external pressure type. The direction of internal pressure seepage is from the inside to the outside of the membrane, while external pressure seepage is just the opposite. However, in practical application, external pressure MBR is still common, because internal pressure MBR is easy to block, which leads to the decrease of membrane flux, thus reducing the treatment effect of MBR membrane.

3. According to the combination mode of membrane module and bioreactor, membrane bioreactor can be divided into three basic types: separated, integrated and combined.

Characteristics of MBR membrane:

1, flat plate type, small specific surface area, low processing capacity, not suitable for engineering amplification.

2, drum type, no backwashing, high pretreatment requirements.

3, tubular, low packing density, small intima area per unit volume and high energy consumption.

4, hollow fiber type, high packing density, low energy consumption, large flux, long service life, and can be backwashed, which is widely used in engineering practice.