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TREATMENT OF COPPER(II)-CONTAINED SIMULATED WASTEWATER BY SALT-MODIFIED ZEOLITE

Zeolite is an economical, efficient and environment-friend material with good performance of adsorption, ion exchange and catalysis, which was suitable for treatment of wastewater in environmental pollution control. Salt-modified zeolite was prepared by 2mol/L Na Cl and the influencing factors, such as adsorption time, dosage of modified zeolite, p H, temperature and concentration of simulated wastewater, for treatment of copper(II)-contained simulated wastewater were discussed. The experimental results showed that 100.0m L simulated wastewater containing 10.44mg/L of Cu2+ was treated by 1.2g of Na Cl modified zeolite for 50 min, removal efficiency was up to 96.84%, and the residual concentration of Cu2+ was 0.33mg/L. The treatment performance could reach the first-class criteria specified in Integrated Wastewater Discharge Standard(GB8978-1996).