Alkaline cleaners (g.g., NaOH) for organic and protein-based fouling, acidic cleaners (e.g., HCl, citric acid) for inorganic scaling (carbonates, metal precipitates), and oxidizing agents (e.g., hydrogen peroxide) for biofouling.
A sample recommended cleaning sequence is as follows:
1. Alkaline Wash: NaOH at a concentration of 15–20 g/L, elevated temperature (e.g., 60~80°C), for 1 hour.
2. Followed by a neutral rinse with natural water. Critically, the specific formulations, concentration, temperature must always be verified against the membrane manufacturer's instructions and safety regulation prior to execution.
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