Fluidized bed heterogeneous crystallization technology can solve the pro
blems of treating large volumes of heavy metal wastewater and generating high moisture content sludge but still relies on adding carriers such as si
lica sand and brick powder. Although this heterogenous crystallization tec
hnology can reduce nucleation driving force, it produces crystalline particl
es with heterogeneous components, resulting in the solid material contai
ning a large amount of heterogeneous components, reducing the purity o
f the crystalline product and hindering the intention of recycling the prod
ucts generated by fluidized bed technology. Therefore, to solve and achie
ve the concept of product recycling, our research team uses fluidized bed
homogeneous crystallization technology by controlling the operation pro
cess so that the nuclei are self-generated in the fluidized bed, and gradual
ly grow through self-generated nuclei to form homogeneous and pure cry
stalline products. It effectively removes heavy metal ions from wastewater,
realizing the treatment advantages of pollutant removal and recycling in fl
uidized bed crystallization technology. The main body of this technology i
s a fluidized bed reactor that vertically integrates various units into a singl
e device, occupying only one-third of the land area required by the traditi
onal process mentioned above. By using homogeneous crystallization to r
emove heavy metal ions in water, the obtained crystals have a water conte
nt of only 5%. Even if treated as waste, it can save about 60% of the sludge
treatment costs. This homogeneous crystallization technology can obtain
s high-purity crystals for reuse and the construction cost of the equipmen
t is only one-third of the traditional process. Based on a carbon reduction
perspective, the crystallization method has a higher dehydration efficienc
y that can reduce nearly 300 kg carbon dioxide emissions per ton compare
d to the sludge produced by traditional chemical precipitatio