# US 10,941,062 B2 · Microbubble generator for enhanced plasma treatment of liquid

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 10,941,062 B2
- Document ID: US10941062B2
- Status: Granted
- Kind: B2
- Application number: 16/192,090
- Filed: 2018-11-15
- Published: 2019-03-21
- Granted: 2021-03-09
- Earliest claimed: 2014-02-25
- Assignees: Onvector LLC
- Applicants: Onvector LLC
- Inventors: Jun Kang
- Web page: https://patentgrep.com/patent/US10941062B2

## CPC

- C02F 1/72: by oxidation {(C02F1/4672 takes precedence)}
- C02F 1/78: with ozone {(C02F1/4672 takes precedence)}
- C02F 1/722: {Oxidation by peroxides}
- C02F 2305/02: Specific form of oxidant
- C02F: TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE (separation in general B01D; special arrangements on waterborne vessels of installations for treating water, waste water or sewage, e.g. for producing fresh water, B63J; adding materials to water to prevent corrosion C23F; treating radioactively-contaminated liquids G21F9/04; regeneration of reactants for recirculation into processes, see the relevant places for the processes)

## Abstract

A system for the plasma treatment of a liquid is described. The system includes a storage chamber containing a liquid and a head-space, a gas source connected to a sparger positioned within the liquid, a pair of electrodes positioned within the liquid and substantially above the sparger, a microbubble generator positioned within the liquid, and a conduit between the head-space and the microbubble generator, such that gas from the head space can travel through the conduit to the microbubble generator. Also described is a method of plasma treating a liquid. The method includes the steps of positioning a liquid in a storage chamber at a volume that provides a head-space in the storage chamber, feeding a gas to a sparger that is positioned within the liquid to form a first set of bubbles in the liquid, passing the first set of bubbles between a pair of electrodes positioned within the liquid and substantially above the sparger, generating a plasma discharge between the electrodes, and feeding the gas in the head-space into a microbubble generator positioned within the liquid to form a second set of bubbles in the liquid, wherein the second set of bubbles are in the range of 0.1 to 5 microns in diameter.

## Claims

### Claim 1

A system for plasma treatment of a liquid, the system comprising:
a piping flow system including a liquid inlet tube, a liquid outlet tube connected to a liquid storage reservoir, and a head-space;
a sparger connected to a gas source, the sparger positioned within the liquid;
a pair of electrodes positioned within the liquid and above the sparger;
a microbubble generator including a cylindrical tube with ends blocked by endplates positioned within the liquid outlet tube, the cylindrical tube including pores in the range of 0.1 to 5 microns in size for the gas from the head-space to flow through; and
a conduit between the head-space and the microbubble generator, such that gas from the head space can travel through the conduit to the microbubble generator.

### Claim 2 (depends on 1)

The system of claim 1, wherein the conduit between the head-space and the microbubble generator includes a compressor pump.

### Claim 3 (depends on 1)

The system of claim 1, wherein the sparger includes pores of at least 1 mm in size for the gas from the gas source to flow through.

### Claim 4 (depends on 1)

The system of claim 1, wherein the conduit between the head-space and the microbubble generator is connected to one of the endplates.

### Claim 5 (depends on 1)

The system of claim 1, wherein the conduit between the head-space and the microbubble generator is connected to a sidewall of the cylindrical tube.