| 英文摘要 |
This study aims to improve understanding of the current operation of industrial waste incineration facilities, while also tracking the treatment flow of the ash and residue thus produced. The project is currently in the last year of a scheduled three. Incineration sites were visited to study the quality and quantity of treatment ash and residue. During the project period, basic data of 374 industrial waste incinerators were checked and updated; 94 sites were visited, including 81 operating and 13 stalling; 100 samples taken from various sites were analyzed for heavy metals and dioxin compounds; and TCLP(Toxicity characteristic leaching procedure) was applied to check for the existence heavy metals on samples of site ash. Additionally, a geographical database of sites was devised. The data are used to evaluate the performance of the waste assortment, the future strategy and modify regulations of EPA.
The investigation demonstrated that a large proportions of small capacity incinerators were actually not operating, alternatives incineration were also adopted. Overall, 72 facilities were operating, 283 were not operating, 19 had been dismantled. The total number of operating facilities was 16 fewer than in the previous year, and the amount of industrial waste incineration is about 0.879 million tons per year, 20% ash and residue is produced.
The analytical results demonstrated that 28% of ash and residue exceeded the TCLP standards, with lead (19%) and cadmium (16%) were the most common contaminants. Furthermore, tests for 17 dioxin compounds in ash and residue sample were also revealed high levels, with around 33% of samples exceeding 1ng-TEQ/g. However, most facilities treat the ash and residue according to the regulations, and solidify and landfill treatment were the most widely practiced methods, with only a small proportion of the ash and residue being reused.
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