In recent years, one of the materials that has attracted the attention of the manufacturers of water and wastewater membranes has been the use of sulphonyl polymers, especially polyether sulfone. Due to its chemical and physical properties, such as processability, good thermal resistance and stability under various environmental conditions, this material is suitable for making membranes used in water and wastewater treatment. Nanofiltration was used in various food, textile, leather and paper, chemical, electronics and electroplating industries, water production, agriculture, and so on. Nanofilters remove gravel, clays, giardia parasites, algae, all microbial species, all viruses and soil materials.
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