Abstract
The paper investigates the treatment of wastewater of metallurgical enterprise MC MC ‘Kazzinc’ LLP from metal ions such as copper (II), zinc and lead (II). The possibility of wastewater treatment from metal ions with the help of mechanically activated natural zeolite of Taizhuzgen deposit (East Kazakhstan) has been substantiated. Adsorption ability of zeolite depending on its fractional composition has been studied. The effective method of sorbents modification – mechanical activation – is shown. By results of experimental researches it is established that the received mechanically activated sorbent on the basis of natural zeolite is perspective for deep treatment of multicomponent waste waters of metallurgical enterprises. It was found that the sorption activity of zeolite directly depends on the degree of mechanically activated sorbent. The highest degree of industrial wastewater purification from Cu 2+ , Zn 2+ , Pb 2+ ions (53.85%, 88.52% and 92.11%, respectively) is achieved at 3-hour contact of mechanically activated sorbent (optimal size 50-100 microns) with wastewater and the ratio (1-2) g:100 cm 3 . The adsorption isotherms of copper (II), zinc and lead (II) ions on mechanically activated zeolite of the Tayzhuzgen deposit were constructed for the first time in accordance with the Langmuir and Freundlich models.