Abstract:Content of Cu in currently widely-used printed circuit board is 20%-30%. Waste circuit board smelting enterprises recycle Cu and other metal elements from waste circuit boards, and the smelting process generates waste gas, waste water and solid waste. The pollutant emission characteristics of a typical waste circuit board smelting enterprises were analyzed and the emission coefficients of main air pollutants were calculated. The main existing forms of heavy metals were measured to reveal the migration law of heavy metal pollutants in the molten pool smelting process. Cu, Pb and Sn were determined as the key heavy metal pollutants, and the proportions of different occurrence objects were compared.