TREATMENT OF URBAN WASTE WATER FROM IONS OF HEAVY METALS BY USING NEW SORPTION MATERIAL
The article presents the results of experiments on the removal of heavy metal ions from urban wastewater with a new sorbent -based on clay. The work was carried out in an experimental reactor (SBR) in three modes: bio-sorption treatment; sorption purifi cation; and evaluating the eff ect of the coagulant on the eff ectiveness of sorption purifi cation. The dose of sorbent used in the aeration tank to achieve standards for heavy metal ions was 10 g / l. When using the proposed sorbent in sorption purifi cation the dose of the sorbent was decreased to 1 g / l. The introduction of a coagulant with a dose of 6-8 mg / l for iron (III) had a positive eff ect on the concentration of zinc, copper, lead, aluminum and phosphates, but increased the concentration of iron in purifi ed water. The new sorbent is recommended for deep treatment of industrial wastewater with higher initial concentrations.