DE2443185A1 - Molecular separation e.g. osmosis, reverse osmosis or dialysis - obtaining pressure difference by placing membrane cell under atmospheric pressure - Google Patents

Molecular separation e.g. osmosis, reverse osmosis or dialysis - obtaining pressure difference by placing membrane cell under atmospheric pressure

Info

Publication number
DE2443185A1
DE2443185A1 DE2443185A DE2443185A DE2443185A1 DE 2443185 A1 DE2443185 A1 DE 2443185A1 DE 2443185 A DE2443185 A DE 2443185A DE 2443185 A DE2443185 A DE 2443185A DE 2443185 A1 DE2443185 A1 DE 2443185A1
Authority
DE
Germany
Prior art keywords
osmosis
pressure
membrane
dialysis
atmospheric pressure
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.)
Pending
Application number
DE2443185A
Other languages
German (de)
Inventor
Alfred Hoehn
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DE2443185A priority Critical patent/DE2443185A1/en
Publication of DE2443185A1 publication Critical patent/DE2443185A1/en
Pending legal-status Critical Current

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Classifications

    • 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
    • B01D61/24—Dialysis ; Membrane extraction
    • B01D61/243—Dialysis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2313/00—Details relating to membrane modules or apparatus
    • B01D2313/18—Specific valves

Landscapes

  • Health & Medical Sciences (AREA)
  • Urology & Nephrology (AREA)
  • Engineering & Computer Science (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

Molecular separation of materials is carried out by pressing a contaminated liquid through the pores of a membrane by atmospheric pressure equalisation. Partial pressure is produced by evacuating a pocket above liquid level in the clarified liquid region, while simultaneously removing by suction a quantity of water corresponding to the pressure of the vacuum. Partial pressure may be produced by means of a valve system on one side of the membrane, applying pressure in shock waves.

Description

Verfahren und Anlage für die Abscheidung von Stoffen im molekularen Größenbereich.Process and system for the separation of substances in the molecular Size range.

Die Neuerung betrifft ein System und eine Anlage zur Abscheidung von Stoffen im molekularen Größenbereich.The innovation concerns a system and a plant for the separation of Substances in the molecular size range.

Bekannt sind Verfahren der Osmose, der Dialyse und der Umkehrosmose. Auch kennt man Verfahren der Elektrodialyse. In jedem Fall wird eine Flüssigkeit durch ein Membran gedrückt. Dies geschieht durch den osmotischen Druck oder durch eine mechanisch erzeugte Druckdifferenz.Methods of osmosis, dialysis and reverse osmosis are known. Electrodialysis processes are also known. Either way it becomes a liquid pressed through a membrane. This is done through osmotic pressure or through a mechanically generated pressure difference.

Neuerungsgemäß wird eine Druckdifferenz dadurch erzielt, daß eine Membranzelle unter atmosphärischem Druck steht.According to the innovation, a pressure difference is achieved in that a Membrane cell is under atmospheric pressure.

Auf der anderen Seite der Membrane wird eine Flüssigkeit unter einem Druck von 10 Torr gehalten. Dies geschieht in einer Tandemanlage im intermittierend - kontinuierlichem Rythmus durch Evakuieren einer Blase die den Flüssigkeitsspiegel begrenzt und gleichzeitig durch Absaugen gegen eine Wassersäule, gleichbedeutend mit einem Druck von 750 Torr. Die entstehende Druckdifferenz drückt die verschmutzte Flüssigkeit durch die Poren einer Membrane.On the other side of the membrane there is a liquid under one Maintained pressure of 10 torr. This is done intermittently in a tandem system - continuous rhythm by evacuating a bladder which raises the fluid level limited and at the same time equivalent by suction against a column of water with a pressure of 750 torr. The resulting pressure difference presses the contaminated Liquid through the pores of a membrane.

Wird in der Membranzelle, bei geschlossenem vakuumdichtem Einlaßventil, der Inhalt ausgepumpt so erflolgt eine kurzzeitige Rückspülung von der anderen Seite der Membrane. Dabei wird die Membrane durch Schock in eine Schwingung versetzt. Eine Reinigung der Membranen und der Poren erfolgt. Is in the membrane cell, with the vacuum-tight inlet valve closed, the contents are pumped out so there is a brief backwash from the other side the membrane. The membrane is vibrated by a shock. The membranes and the pores are cleaned.

Am Fuß der Membranzelle befindet sich ein trichterartiges Gefäß, in dem während des Prozeßablaufes sich ein meist gallertartiger Schlamm absetzt. In ebenfall intermittierend - kontinuierlicher Folge wird der Sumpf durch auspumpen entleert und einem Eindickungsprozeß zugeführt.At the foot of the membrane cell is a funnel-like vessel, in a mostly gelatinous sludge settles during the process. In also intermittent - continuous sequence, the sump is pumped out emptied and fed to a thickening process.

Claims (1)

AnsprücheExpectations Anspruch 1 auf ein Verfahren und eine Anlage für die Abscheidung von Stoffen im molekularen Größenbereich dadurch gekennzeichnet, daß eine verschmutzte Flüssigkeit durch atmosphärischen Druckausgleich durch die Poren einer Membrane gedrückt wird.Claim 1 to a method and a system for the deposition of Substances in the molecular size range characterized in that a contaminated Liquid through atmospheric pressure equalization through the pores of a membrane is pressed. Anspruch 2 Nach Anspruch 1 dadurch gekennzeichnet, daß der Unterdruck durch Evakuieren einer Blase über dem Flüssigkeitsspiegel im Klarflüssigkeitsbereich,unter gleichzeitigem Absaugen einer Wassermenge entsteht, die dem Druck des Vakuums entspricht.Claim 2 According to claim 1, characterized in that the negative pressure by evacuating a bubble above the liquid level in the clear liquid area, below simultaneous suction of an amount of water that corresponds to the pressure of the vacuum. Anspruch 3 Nach Anspruch 1 und 2 dadurch gekennzeichnet, daß mittels eines Ventilsystems jeweils auf einer Seite der Membrane ein Unterdruck erzeugt werden kann und daß dieser Druckeinsatz schockartig erfolgt.Claim 3 According to claim 1 and 2, characterized in that means a valve system generates a negative pressure on one side of the membrane can be and that this use of pressure occurs suddenly.
DE2443185A 1974-09-10 1974-09-10 Molecular separation e.g. osmosis, reverse osmosis or dialysis - obtaining pressure difference by placing membrane cell under atmospheric pressure Pending DE2443185A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE2443185A DE2443185A1 (en) 1974-09-10 1974-09-10 Molecular separation e.g. osmosis, reverse osmosis or dialysis - obtaining pressure difference by placing membrane cell under atmospheric pressure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2443185A DE2443185A1 (en) 1974-09-10 1974-09-10 Molecular separation e.g. osmosis, reverse osmosis or dialysis - obtaining pressure difference by placing membrane cell under atmospheric pressure

Publications (1)

Publication Number Publication Date
DE2443185A1 true DE2443185A1 (en) 1976-03-18

Family

ID=5925278

Family Applications (1)

Application Number Title Priority Date Filing Date
DE2443185A Pending DE2443185A1 (en) 1974-09-10 1974-09-10 Molecular separation e.g. osmosis, reverse osmosis or dialysis - obtaining pressure difference by placing membrane cell under atmospheric pressure

Country Status (1)

Country Link
DE (1) DE2443185A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4234428A (en) * 1978-10-12 1980-11-18 Baxter Travenol Laboratories, Inc. Dual membrane mass transfer device
ES2171346A1 (en) * 2000-03-30 2002-09-01 Orti Javier Porcar Installation for application of vacuum in desalination of water process using inverted osmosis employs two tanks acting alternatively by means of system of opening and closure for filling and discharging desalinated water to storage tank

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4234428A (en) * 1978-10-12 1980-11-18 Baxter Travenol Laboratories, Inc. Dual membrane mass transfer device
ES2171346A1 (en) * 2000-03-30 2002-09-01 Orti Javier Porcar Installation for application of vacuum in desalination of water process using inverted osmosis employs two tanks acting alternatively by means of system of opening and closure for filling and discharging desalinated water to storage tank

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