TECHNOLOGY OF SORPTION PURIFICATION OF WASTE WATER FROM CADMIUM IONS, LEAD AND COPPER WITH GRANULATED PEAT

Abstract

The issues of pollution of fresh water bodies with industrial wastewater containing cadmium ions Cd + 2, lead Pb + 2 and copper Cu + 2 are considered, on the basis of the studies it has been established: the sorption efficiency decreases with an increase in the grain size of briquetted peat; The most efficient process of sorption of ions by briquetted peat proceeds within 5 minutes of contact, then it slows down. Within 5 minutes, up to 91% of Сd + 2 ions, 98% of Pb + 2 ions, 90% of copper ions Cu + 2 are removed, the sorption capacity at saturation was: for Сd + 2 - 0.0778 mMol / g ( 8.75 mg / g), for Pb + 2 - 0.8205 mMol / g (170.00 mg / g), for Cu + 2 - 2.707 mMol / g (172 mg / g). The obtained research results indicate the possibility of using briquetted peat as an effective sorbent for wastewater treatment. On the basis of the research carried out, a technology has been developed for water purification from cadmium, lead, and copper ions.