GB1519322A - Combined foam flotation and membrane separation processing system - Google Patents

Combined foam flotation and membrane separation processing system

Info

Publication number
GB1519322A
GB1519322A GB3908375A GB3908375A GB1519322A GB 1519322 A GB1519322 A GB 1519322A GB 3908375 A GB3908375 A GB 3908375A GB 3908375 A GB3908375 A GB 3908375A GB 1519322 A GB1519322 A GB 1519322A
Authority
GB
United Kingdom
Prior art keywords
separation
membrane
foam
permeate
flotation separation
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB3908375A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Honeywell UOP LLC
Original Assignee
UOP LLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by UOP LLC filed Critical UOP LLC
Priority to GB3908375A priority Critical patent/GB1519322A/en
Publication of GB1519322A publication Critical patent/GB1519322A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/24—Treatment of water, waste water, or sewage by flotation
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23C—DAIRY PRODUCTS, e.g. MILK, BUTTER OR CHEESE; MILK OR CHEESE SUBSTITUTES; MAKING THEREOF
    • A23C9/00—Milk preparations; Milk powder or milk powder preparations
    • A23C9/14—Milk preparations; Milk powder or milk powder preparations in which the chemical composition of the milk is modified by non-chemical treatment
    • A23C9/142—Milk preparations; Milk powder or milk powder preparations in which the chemical composition of the milk is modified by non-chemical treatment by dialysis, reverse osmosis or ultrafiltration
    • A23C9/1427—Milk preparations; Milk powder or milk powder preparations in which the chemical composition of the milk is modified by non-chemical treatment by dialysis, reverse osmosis or ultrafiltration by dialysis, reverse osmosis or hyperfiltration, e.g. for concentrating or desalting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/58—Multistep processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION 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
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D1/00—Flotation
    • B03D1/02—Froth-flotation processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION 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
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D1/00—Flotation
    • B03D1/14—Flotation machines
    • B03D1/24—Pneumatic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
    • B01D61/025—Reverse osmosis; Hyperfiltration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/14—Ultrafiltration; Microfiltration
    • B01D61/145—Ultrafiltration

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Biotechnology (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Organic Chemistry (AREA)
  • Food Science & Technology (AREA)
  • Polymers & Plastics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

1519322 Membrane separation U O P INC 24 Sept 1975 39083/75 Heading B1X A separation process comprises subjecting to foam flotation separation in a flotation separation stage a feed comprising a liquid component and material which is entrained in the liquid component, at least part of the entrained material being removed from said feed by said foam flotation separation and passing in the course of said flotation separation to an upper foam-containing zone of said flotation separation stage, withdrawing from a locus lower in said flotation separation stage than said upper zone, feed material from which entrained material has been so removed, conducting one or more membrane separations comprising at least one such membrane separation applied to material withdrawn as aforesaid and optionally one or more membrane separations applied to material forming a permeate as hereafter referred to, each membrane separation comprising contacting such withdrawn or permeate material in a membrane separation stage with a membrane at an elevated pressure to effect a desired product separation resulting in formation of a concentrate having an elevated pressure and a permeate, discharging said permeate, discharging said concentrate at least part of a concentrate from at least one membrane separation stage passing through a jet pumping ejector which has a throat zone which has a pressure lower than that of, and which is in communication with, the upper foam containing zone of said flotation separation stage so that foam and entrained material removed from said feed by said foam flotation separation is caused by the pressure gradient to be withdrawn from said upper zone and discharged from the jet pumping ejector with concentrate material, or is assisted in said withdrawal and discharge by said pressure gradient. The process is applicable to processing of sulphite liquor or of whey. In one embodiment the permeate is subjected to a further membrane separation.
GB3908375A 1975-09-24 1975-09-24 Combined foam flotation and membrane separation processing system Expired GB1519322A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3908375A GB1519322A (en) 1975-09-24 1975-09-24 Combined foam flotation and membrane separation processing system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3908375A GB1519322A (en) 1975-09-24 1975-09-24 Combined foam flotation and membrane separation processing system

Publications (1)

Publication Number Publication Date
GB1519322A true GB1519322A (en) 1978-07-26

Family

ID=10407539

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3908375A Expired GB1519322A (en) 1975-09-24 1975-09-24 Combined foam flotation and membrane separation processing system

Country Status (1)

Country Link
GB (1) GB1519322A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10214457C1 (en) * 2002-03-30 2003-08-21 Upt Ges Fuer Umweltkompatible Removing floating materials from liquid medium, especially aqueous solutions, emulsions or suspensions comprises feeding gas into medium in lower part of container having medium, and passing through membrane unit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10214457C1 (en) * 2002-03-30 2003-08-21 Upt Ges Fuer Umweltkompatible Removing floating materials from liquid medium, especially aqueous solutions, emulsions or suspensions comprises feeding gas into medium in lower part of container having medium, and passing through membrane unit

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee