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US 8,522,605 B2Granted
Water quality assessment sensor, water quality assessment method for feed water using water quality assessment sensor, and operation management method for water treatment facility
AssigneeHitachi, Ltd.
InventorsKeiko Nakano, Shinichi Taniguchi
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Abstract
The same phenomenon as the phenomenon that a component of feed water is adsorbed to the surface of the membrane is used to assess water quality. Specifically, a sensor whose surface has a thin layer made of the same material as the material of the surface of the membrane and which includes a measurement unit such as a quartz crystal sensor that measures an adsorption rate on the thin layer is used to assess an effect of the water quality of the feed water on the membrane on the basis of a change in the adsorption rate on the sensor surface.
Claims13
A water quality assessment sensor for assessing water quality, comprising:
- an adsorption thin layer coated to an adsorption measuring surface of the sensor;
- and
- a measuring apparatus for measuring an adsorption rate on the adsorption thin layer,
- wherein
- water to be assessed is water that has not been separated by a water treatment membrane,
- material of the adsorption thin layer is identical to that of the water treatment membrane, and
- the adsorption thin layer is less than or equal to 100 nm thick.
4 more elements
Dependencies are inferred from the claim text.