Successful pretreatment can delay scaling on the membrane surface and protect the membrane material from damage by sensitive substances. However, over time, chemical and biological fouling still occur on the membrane surface. Therefore, regular cleaning is considered a crucial part of system operation.

1. Benefits of Membrane Cleaning:

Membrane cleaning is performed to remove deposits from the membrane surface, restore and enhance membrane flux, ensure the continuous operation of the system, avoid the occurrence of permanent membrane fouling, thereby extending the membrane's service life and reducing operating costs.

2. Timing of Membrane Cleaning:

Membrane fouling is judged by indicators such as membrane flux and conductivity. However, flux and conductivity are usually influenced by temperature, pressure, and feed water quality. Therefore, a more accurate approach is to use data displayed by the computer in a membrane control system that integrates these parameters to determine the degree of membrane fouling and thus establish the optimal cleaning time.