The objective of the project was to have a better understanding of the current operation of incineration facilities for industrial waste, and to track the treatment flow of the ash and residue produced from them. During the project period, basic data of 372 industrial wastes incinerators were checked and updated; 108 sites were visited, which include 83 in operation and 25 in stalling; 100 samples taken from various sites were analysed; and leaching tests in existence of PCBs, heavy metals, and chlorinated organic compounds were conducted on ashes from 7 sites. A geographical database of sites was established, and Application of ash as surface and bottom layer in road construction was also real-life tested. The investigation showed that high proportion of small capacity incinerators were actually in stalling, alternatives treatment methods other than incineration were adopted by many of them. Overall, there were 99 facilities in operation, 256 in stalling, 17 have been dismantled. Taking figures from the Internet Declaration System, estimated a 9.6 million tones of reduction in ash and residue were achieved in 2004 from 2003, around 11.85% in reduction rate. The analysis results showed that 24% of ash and residue exceeding the toxicity characteristic leaching test standards, with lead (15.9%~18%) and Cadmium (9.5%~20%) were the highest. Moreover, testing for 17 dioxin compounds in ash and residue sample were also tend to be high, around 33% of them exceeding 1,000 ng-TEQ/kg. For heavy metal exceeding standards, the ash of incinerated waste from both public and private run treatment site were the highest (40.9%), from medical facility come second (36.4%). Overall, most of the facilities treat the ash and residue according to the regulations, and solidify and landfill treatment were the most practiced methods, only small proportion were reused. methods, only small proportion were reused.

incineration ash,Integration,management