1. Large water flux: hydrophilic hollow fiber membrane has the characteristics of large water flux because of the interconnected asymmetric porous structure inside the membrane.

2. High separation efficiency: Because the membrane has uniform pore size, narrow distribution and no deformation, it has high separation efficiency and produces high-quality water.

3. Pollution resistance: The pollution resistance of the permanent hydrophilic hollow fiber membrane is obviously higher than that of the filtration membrane made of other materials, which makes the filtration performance of the hollow fiber membrane less attenuated, reduces the cleaning times, reduces the cleaning cost and prolongs the service life of the membrane.

4. Easy to clean: hydrophilic hollow fiber membrane has good pollution resistance, which makes it easy to clean. Under normal circumstances, it can be backwashed by penetrating water.

5. Chemical resistance: stable chemical performance, strong oxidation resistance and long service life. When the membrane is chemically cleaned, there are a wide range of chemicals that can be selected.

6. Low filtration pressure: the continuous filtration technology with hollow fiber separation membrane has a low operating pressure, usually 0.03-0.15MPa (the normal operating pressure of submerged ultrafiltration is-0.04--0.02 MPa), thus reducing energy consumption, investment and operating cost.

7. Convenient selection of operation mode: Due to the high mechanical strength of the membrane, it can operate in a larger operating pressure range, so the operation mode of the system has more choices.