In this study, cotton and polyester textile fabrics have been treated with polyaniline layer to use as smart filter for industrial wastewater treatment. The developed filters were effective to anchor the dissolved dye wastewater molecules. The polymerization of polyaniline chains on textile fabrics was assured by microscopic techniques. Also, the electrical resistance of treated samples was significantly reduced recording 20 and 40 kΩ for cotton and polyester-PANI filter respectively. The textile-based filter was tuned to be selective to negative dye molecules dissolved in water. The mass ratio of dissolved dyes was varied with developed filter and achieved 45% removal efficiency. The developed textile-based filter was characterized using various spectroscopic and microscopic techniques. The concentration of waste dyes molecules before and after treatments was determined and efficiency of filter was evaluated.