Iron powder and sand filtration process for treatment of...

Liquid purification or separation – Processes – Making an insoluble substance or accreting suspended...

Reexamination Certificate

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C210S720000, C210S738000, C210S748080, C210S757000, C210S202000, C210S206000, C210S912000, C210S913000, C210S205000

Reexamination Certificate

active

06942807

ABSTRACT:
A water filtration device (3) and method which removes heavy metals and organic compounds from raw water is provided.

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