Efficient dye sieving and salt separation can facilitate the recycling of valuable resources in textile wastewater treatment. This study focuses on developing a high-performance nanofiltration membrane (NF) by co-depositing activated polydopamine (O-PDA). oxidized with KMnO4. and polyethyleneimine (PEI) onto a polysulfone support membrane (PSF). https://hollandscountryclothinges.shop/product-category/folding-knives/