Introduction: Dyes and pigments are major sources for polluting the water resources. These colored compounds into the effluents causes considerable environmental pollution by eutrophication [reducing the sunlight penetration and hindering the process of photosynthesis] of aquatic ecosystem and serious health-risks factors by bioaccumulation. Therefore, decolorozitation of residual dyes and pigments after dyeing is another important aspect of wastewater treatment before discharge into environment. Adsorbtion is one of the most promising techniques applied for the decontamination of wastewater from dyes. Using macroporous resin, this paper proposes a method for decontamination / decolorization of the leather industrial wastewaters from ICPI. The wastewaters contain pigments with modified surface obtained by sulphonation. The attaching the negatively charged groups on the surface of pigment particle and his encapsulation helps the penetration of the sulphonated pigment in the layer of leather. The removal dyes from industrial effluents can be carried out by ion exchange method. Discoloration by sorbtion is influenced by many factors: dye-pigment/ ion exchange resin interaction, particle size and surface area of resin, time contact and the amount of wastewater passed through the bed of ion exchange resin. Materials and methods: in the research were taken for decolorization the following IER-PUROLITE type: strongly basic anion exchanger Purolite A 500 and PFA 500 MB. The industrial wastewater from ICPI microproduction leather dyeing contains: commercial acid azo dyes - acid black 210, direct black 234[acid black NBH] and functionalized pigments obtained by sulphonation in laboratory ICECHIM - Pigment black 7, Pigment red 122 and Pigment blue 15:3. Experimental study also involves the identification and characterization of analytical methods for establish the various quality parameters of wastewater and discoloured wastewater. Results and discussion: This study shows that the strongly basic anion exchanger with macroporous structure containing functionalized tertiary amine on the polystyrene crosslinked with divinylbenzene matrix can be practically used for color removal from the wastewater containing anionic azo dyes and pigments with surface-modified. The decolourization performance of IER is due by the yield of quality parameters of treated wastewater: remove of 95 % for sulphates, ~40 % for total nitrogen, 85 % for DOC-Cr, 90 % for turbidity and ~ 95 % for colour, depending on the type of dyeing wastewater.