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1. US20200376526 - Ultrafine bubble cleaning method using ultrafine bubble-containing liquid, apparatus therefor, and dissolved air floatation apparatus

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United States of America
Application Number 16998410
Application Date 20.08.2020
Publication Number 20200376526
Publication Date 03.12.2020
Grant Number 11311921
Grant Date 26.04.2022
Publication Kind B2
IPC
B09C 1/02
BPERFORMING OPERATIONS; TRANSPORTING
09DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
CRECLAMATION OF CONTAMINATED SOIL
1Reclamation of contaminated soil
02Extraction using liquids, e.g. washing, leaching
G21F 9/10
GPHYSICS
21NUCLEAR PHYSICS; NUCLEAR ENGINEERING
FPROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
9Treating radioactively contaminated material; Decontamination arrangements therefor
04Treating liquids
06Processing
10by flocculation
C02F 1/24
CCHEMISTRY; METALLURGY
02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
1Treatment of water, waste water, or sewage
24by flotation
B03D 1/14
BPERFORMING OPERATIONS; TRANSPORTING
03SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
DFLOTATION; DIFFERENTIAL SEDIMENTATION
1Flotation
14Flotation machines
B01D 21/00
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
21Separation of suspended solid particles from liquids by sedimentation
B01D 21/01
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
21Separation of suspended solid particles from liquids by sedimentation
01using flocculating agents
CPC
B01D 21/0084
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
21Separation of suspended solid particles from liquids by sedimentation
0084Enhancing liquid-particle separation using the flotation principle
B09C 1/02
BPERFORMING OPERATIONS; TRANSPORTING
09DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
CRECLAMATION OF CONTAMINATED SOIL
1Reclamation of contaminated soil
02Extraction using liquids, e.g. washing, leaching ; , flotation
B01D 21/01
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
21Separation of suspended solid particles from liquids by sedimentation
01using flocculating agents
B01D 21/267
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
21Separation of suspended solid particles from liquids by sedimentation
26Separation of sediment aided by centrifugal force ; or centripetal force
267by using a cyclone
B01J 20/14
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
20Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
02comprising inorganic material
10comprising silica or silicate
14Diatomaceous earth
B01J 20/20
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
20Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
02comprising inorganic material
20comprising free carbon; comprising carbon obtained by carbonising processes
Applicants PCS CO., LTD.
Inventors Toshikatsu Suzuki
Agents Oliff PLC
Priority Data 2014-052788 14.03.2014 JP
2014-206019 06.10.2014 JP
2014-258025 19.12.2014 JP
Title
(EN) Ultrafine bubble cleaning method using ultrafine bubble-containing liquid, apparatus therefor, and dissolved air floatation apparatus
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Abstract
(EN)

A dissolved air floatation apparatus including an ultrafine bubble-containing liquid production device and a dissolved air floatation tank. The ultrafine bubble-containing liquid production device includes a gas-liquid mixing unit and a bubble-containing liquid separation device. The bubble-containing liquid separation device swirls a liquid containing ultrafine bubbles and larger bubbles in a storage tank to concentrate the liquid that contains the ultrafine bubbles and the liquid that contains the larger bubbles to a central part of the swirling flow followed by discharge. A pressurized ultrafine bubble-containing liquid is mixed in a raw liquid containing a subject to be cleansed and is poured into the dissolved air floatation tank to cause a suspended substance and a dissolved component in the raw liquid to be adsorbed on an interface of fine bubbles and be floated in the dissolved air floatation tank to be extracted.
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