Use an alkaline cleaner to help eliminate organic matter, oil, grime and grease within thin film membranes. Biofoulants such as mildew and mold can be removed using an anionic surfactant cleaner. Use one or all products depending on the quality of your water.
Several approaches can be taken to minimize membrane fouling:
- Optimize pH and ionic strength of the feed solution to minimize the adsorption or deposition of the feed materials;
- Select an appropriate pre-filtration procedure or other means to remove large molecules, since the presence of larger molecules or particles could cause a steric hindrance to the passage of smaller molecules through the membrane;
- Select a membrane with an optimum pore size to result in good separation performance as well as optimized permeate flux;
- Optimize the operating conditions. This includes increasing transmembrane pressure to maximize flux without introducing more fouling potential;
- Increase the cross-flow velocity, which generally results in an improvement in permeate flux.
Is that ok if dosing diluted chlorine with 0.4 N and soaking the vessel for a time ..or that will damage the membrane according to the manufacturing of cellouse @Mohamed Khedawy