After burning garbage, the fly ash collected from each equipment—economizer, semi-dry scrubber, bag filter dust collector, etc.—would be sent to ash storage tank. The ash would be mixed with cement, heavy metal chelator and water and become stabilized ash product by intensive mixer and packed in jumbo bags to cure. When it passes heavy metal dissolution test (TCLP), it would be sent to Shanzhuku Sanitary Landfill Site and buried by its own.