The Identification of the Priority Controlled Pollutants in Hazardous Waste Landfills

Data were collected from 36 typical hazardous waste disposal centers, and the landfill number, waste type and landfill capacity investigated based on the data. Furthermore, the priority controlled pollutants were screened out by the integrated score method, and the source analysis of these pollutants conducted. The results showed that there were 27 landfill sites among the 36 typical hazardous waste disposal centers. The Four kinds of priority controlled hazardous wastes in landfill sites were heavy metals (Cr, Zn, Cu, Cd, Ni, Hg, Ba and Pb), heavy metals-like (As), organic matter (petroleum) and inorganic salts (F^- and inorganic CN^-). The major 10 pollutants in sequence were As, Cr, Zn, Cu, Cd, Ni, Hg, F^-, Ba, and inorganic CN^- based on their landfill capacity, site distribution, environmental and human harm assessment. These pollutants originated mainly from the electroplating, waste incineration, mining and oil processing.