WASTEWATER TREATMENT FROM HEAVY METAL IONS

Abstract

The article considers the problem of wastewater treatment of industrial enterprises containing heavy metal ions. Because of insufficient treatment of wastewater from heavy metal ions, they enter ecological systems, accumulate in them and cause toxic effects on phyto and zoocenosis, even in small concentrations, which in turn leads to imbalance of ecosystems and their degradation. Therefore, the treatment of industrial effluents is becoming increasingly important over time. The application of existing methods and sorbents for purification of industrial effluents from heavy metal ions is considered and analyzed.However, existing combined wastewater treatment methods and sorbents have little effectiveness against heavy metals. The paper proposes the use of clay- based sorbents. The purpose of research is to substantiate the feasibility of using sorbents based on clays of deposits in Ukraine for wastewater treatment of industrial enterprises from heavy metal ions. Clays of domestic deposits are not scarce, inexpensive in comparison with existing sorbents. Samples of sorbents based on clay were studied, their composition was developed and analyzed.A method for obtaining clay-based sorbents has been developed. Materials such as peat, wood ash and dolomite were used as activating additives. The composition and structure of the developed sorbents, as well as their sorption capacity and ability to heavy metals have been studied. These sorbents have been shown to be an effective material for cleaning industrial effluents from heavy metal ions and can be recommended for use.