The TCLP test results for the washed MSWIBA showed that its
heavy metal content was far less than the maximum specified by
the Taiwan EPA, which means that the MSWIBA could be reused.
Compared to the unwashed MSWIBA from the same source, the
washed MSWIBA had a significantly lower heavy metal content,
which indicates that the washing procedure was able to remove
the majority of the heavy metals present in the bottom ash. The
chloride ion content was tested in accordance with AASHTO T-
260, and with a content of 0.012% by weight, its concentration
proved to be lower than the 0.024% limit for aggregate in ordinary
concrete. Dioxin and furan were tested using the NIEA M801.11B
method, and their yield concentrations were found to be 0.009
and 0.008 ng I-TEQ/g d.w. (the international toxic equivalent factor),
respectively, both of which are lower than the second MSWIBA
quality standard of 50.1 ng I-TEQ/g d.w.