Evaluation of heavy metal distribution and biological toxicity in agglomeration bed material during artificial waste incineration in fluidized bed

Abstract

This study discusses the impact of different operating parameters on the bed material particle size and heavy metal distribution, and evaluates the impact of bed material heavy metal on the environment through TCLP and Vibrio fischeri test. The experimental results show that the bed material particle size distribution inclines to smaller particle sizes as the operating temperature increases. When there is Na, the particle size increases due to the agglomeration of eutectic. As for the heavy metal distribution, the combination of the fine particle sizes ( 0.84 mm) and fine (<0.59 mm) particle sizes have the maximum leaching concentration. As for the biological toxicity, when the temperature is 700 °C or Na concentration is 0.3%, the biological toxicity is at its maximum, which may due to a high accumulation of heavy metals.