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Liquid treatment method and liquid treatment apparatus for treating a liquid with plasma
US2016339128A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2016339128-A1 |
| Application number | US-201615141590-A |
| Country | US |
| Kind code | A1 |
| Filing date | Apr 28, 2016 |
| Priority date | May 18, 2015 |
| Publication date | Nov 24, 2016 |
| Grant date | — |
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- Title
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Abstract
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A liquid treatment method according to an aspect of the present disclosure comprises: starting application of a power between a pair of electrodes to generate plasma, which causes active species to be produced in a liquid; measuring the hydrogen ion concentration in the liquid while the plasma is generated; measuring a time elapsed after the starting the application of the power; and stopping the application of the power when a value calculated by (a) multiplying the hydrogen ion concentration by the elapsed time or (b) integrating the hydrogen ion concentration with respect to the elapsed time is larger than a first threshold.
First claim
Opening claim text (preview).
What is claimed is: 1 . A liquid treatment method comprising: starting application of a power between a pair of electrodes to generate plasma, which causes active species to be produced in a liquid; measuring the hydrogen ion concentration in the liquid while the plasma is generated; measuring a time elapsed after the starting the application of the power; and stopping the application of the power when a value calculated by (a) multiplying the hydrogen ion concentration by the elapsed time or (b) integrating the hydrogen ion concentration with respect to the elapsed time is larger than a first threshold. 2 . The liquid treatment method according to claim 1 , further comprising: adding an acidic substance to the liquid when the value is smaller than a second threshold at a predetermined time, the second threshold being equal to or smaller than the first threshold. 3 . A liquid treatment method comprising: starting application of a power between a pair of electrodes to generate plasma, which causes active species to be produced in a first liquid; mixing the first liquid with a liquid to be sterilized to produce a second liquid while the plasma is generated; measuring the hydrogen ion concentration in the second liquid; measuring a time elapsed after the mixing the first liquid with the liquid to be sterilized; and stopping the application of the power when a value calculated by (a) multiplying the hydrogen ion concentration by the elapsed time or (b) integrating the hydrogen ion concentration with respect to the elapsed time is larger than a first threshold. 4 . A liquid treatment method comprising: starting application of a power between a pair of electrodes to generate plasma, which causes active species to be produced in a liquid; adding an acidic substance to the liquid while the plasma is generated; measuring the hydrogen ion concentration in the liquid while the plasma is generated; measuring a time elapsed after the adding the acidic substance to the liquid; and stopping the application of the power when a value calculated by (a) multiplying the hydrogen ion concentration by the elapsed time or (b) integrating the hydrogen ion concentration with respect to the elapsed time is larger than a first threshold.
Assignees
Inventors
Classifications
pH · CPC title
with magnetic or electric fields (C02F1/46 takes precedence) · CPC title
Disinfection · CPC title
- A61L2/14Primary
Plasma, i.e. ionised gases · CPC title
by neutralisation; pH adjustment (for degassing C02F1/20; using ion-exchange C02F1/42; for flocculation or precipitation of suspended impurities C02F1/52; for removing dissolved compounds C02F1/58) · CPC title
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Frequently asked questions
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- What does patent US2016339128A1 cover?
- A liquid treatment method according to an aspect of the present disclosure comprises: starting application of a power between a pair of electrodes to generate plasma, which causes active species to be produced in a liquid; measuring the hydrogen ion concentration in the liquid while the plasma is generated; measuring a time elapsed after the starting the application of the power; and stopping t…
- Who is the assignee on this patent?
- Panasonic Ip Man Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification A61L2/14. Mapped technology areas include Human Necessities.
- When was this patent published?
- Publication date Thu Nov 24 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).