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US 6,319,706 B1Granted
Process and apparatus for remedying polluted media
AssigneeCanon Kabushiki Kaisha
InventorsMasahiro Kawaguchi, Etsuko Sugawa, Yoshiyuki Toge, Akira Kuriyama, Takeshi Imamura
Life of this patent
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Abstract
A process to remedy a polluted medium includes contacting a first medium containing a pollutant with a second medium containing a microorganism which is capable of decomposing the pollutant. A membrane permeable to the pollutant and impermeable to the microorganism is spaced between the first and second media. The first medium and the second medium may flow in opposite directions to each other.
Claims8
An apparatus for remedying a polluted medium comprising a housing having:
- (a) a first passage provided with a first medium containing a pollutant;
- (b) a second passage provided with a second medium containing a microorganism for decomposing the pollutant;
- (c) a membrane permeable to the pollutant and impermeable to the microorganism, said membrane interposed between said first and second passages;
- and
- (d) means to cause the first medium and the second medium to flow in opposite directions.
2 more elements
Dependencies are inferred from the claim text.