There are about 13 to 16 million tones of hazardous electric arc furnace (EAF) dust generated by EAF steel smelting plant every year in Taiwan. The shortage of recycling treatment capacities led to a huge quantity of EAF dust of more than 500,000 tons. With the assistance from the Taiwan Environmental Protection Administration (EPA) and the Industrial Development Bureau (IDB), the construction of 2 new treatment plants and 1 expanding treatment facility had led to the results of annual EAF dust treatment quantity exceeded the annual storage amount starting from 2010. However, the supervising work of cleanup and proper storage still needs to be reinforced. This project has implemented on-site auditing of 23 steel plants, 3 EAF dust recycling treatment plants, 7 EAF slag recycling treatment plants; examined 13 applications for extending the EAF dust storage period; sampled and analyzed 28 EAF dust and slag samples in order to urge the EAF steel-smelting dust and other industrial waste generators to follow the Waste Disposal Act and other relevant laws and regulations. After on-site investigation, this project has found that the EAF dust and slag were stored, cleaned-up and treated properly, but the stored EAF dust quantity still couldn’t meet the annual treatment goal and complete the whole treatment before June 30, 2014. The problems of slow selling EAF slag recycled product and the recycled product management are still unresolved. Regarding the problem of couldn’t complete the entire treatment mount of the EAF dust, this project has already proposed measures to accelerate the treatment task and resolve the problems of proper storage of steel-smelting slag. In addition, through on-site auditing of the production and treatment of aluminum dross and dust from 10 aluminum secondary metallurgy plants and 10 aluminum dross sample analysis, this project has completed the evaluation of feasible treatment technology and source reduction techniques. Furthermore, with respect to aluminum dross treatment problems, this project has also provided countermeasures for EPA reference.

Electric Arc Furnace, Steel-Smelting, Electric Arc Furnace Dust, Electric Arc Furnace Slag, Aluminum-Smelting、Aluminum Dross、Audit Management