Liquid purification or separation – Processes – Making an insoluble substance or accreting suspended...
Reexamination Certificate
2007-05-22
2007-05-22
Hruskoci, Peter A. (Department: 1724)
Liquid purification or separation
Processes
Making an insoluble substance or accreting suspended...
C210S695000, C210S712000, C210S721000, C210S724000, C210S726000, C210S912000, C423S633000
Reexamination Certificate
active
10865784
ABSTRACT:
This invention offers an integrated technology in sequential treatment of wastewater. Low biodegradable organics and heavy metal ions are both contained in wastewater from surface finishing processes. The aim of the invention is to find the solution for treatment of organics and heavy metal ions in complicated wastewater that contains organics and heavy metal ions sequentially. Low biodegradable organics are oxidized by a fenton process with pH ranging from 2 to 5 and temperature ranging from 20° C. to 100° C. Heavy metal ions are then treated by a ferrite process with pH ranging from 8 to 12 and temperature ranging from 20° C. to 100° C. The integrated technology of the fenton process and the ferrite process (2FP) is advantageous to treat the wastewater from surface finishing processes, decrease the production of iron sludge caused in the fenton process and increase the quality of ferrite products.
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Chang Juu-En
Chen Hung-Ta
Chen You-Shen
Hsiao Ting-Che
Lin Tsair-Fuh
Hruskoci Peter A.
National Cheng Kung University
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