This article contains studies, during which the removal of zinc from industrial wastewater of the OOO Rostselmash machine-building plant (Rostov-on-Don) was carried out, using a sorption cleaning method, based on the use of an anacard nut shell grown in the Republic of Côte d'Ivoire. According to the experimental data, the cleaning efficiency was 94%, which confirms the ability of the anacard nutshell to carry out sorption purification of industrial wastewater.