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WO2007115987A1 - Installation d'osmose inverse en petites quantités, comprenant une pompe à perméat à double membrane - Google Patents

Installation d'osmose inverse en petites quantités, comprenant une pompe à perméat à double membrane Download PDF

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Publication number
WO2007115987A1
WO2007115987A1 PCT/EP2007/053278 EP2007053278W WO2007115987A1 WO 2007115987 A1 WO2007115987 A1 WO 2007115987A1 EP 2007053278 W EP2007053278 W EP 2007053278W WO 2007115987 A1 WO2007115987 A1 WO 2007115987A1
Authority
WO
WIPO (PCT)
Prior art keywords
permeate
concentrate
reverse osmosis
pump
suction 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.)
Ceased
Application number
PCT/EP2007/053278
Other languages
German (de)
English (en)
Inventor
Ralf Wolbers
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.)
Wapura Trinkwasserreinigungs GmbH
Original Assignee
Wapura Trinkwasserreinigungs GmbH
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 Wapura Trinkwasserreinigungs GmbH filed Critical Wapura Trinkwasserreinigungs GmbH
Publication of WO2007115987A1 publication Critical patent/WO2007115987A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
    • B01D61/06—Energy recovery
    • 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
    • B01D61/08—Apparatus therefor
    • 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
    • B01D61/22—Controlling or regulating
    • 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
    • C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00—Multistage treatment of water, waste water or sewage
    • C02F9/20—Portable or detachable small-scale multistage treatment devices, e.g. point of use or laboratory water purification systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B43/00—Machines, pumps, or pumping installations having flexible working members
    • F04B43/02—Machines, pumps, or pumping installations having flexible working members having plate-like flexible members, e.g. diaphragms
    • F04B43/06—Pumps having fluid drive
    • F04B43/073—Pumps having fluid drive the actuating fluid being controlled by at least one valve
    • F04B43/0736—Pumps having fluid drive the actuating fluid being controlled by at least one valve with two or more pumping chambers in parallel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
    • F04F13/00—Pressure exchangers

Definitions

  • the invention relates to a small-volume reverse osmosis system with a reverse osmosis module, which has a membrane and a raw water inlet and a concentrate outlet, both arranged on one side of the membrane, and a permeate outlet disposed on the reverse osmosis module on the other side of the membrane is.
  • the yield is the ratio of discarded concentrate to usable permeate, for example 1: 1, or the ratio of used raw water to usable permeate, for example 50%.
  • the same yield is designated, because a raw water quantity of 100% used is divided into 50% concentrate and 50% permeate in both cases. Typical small quantities of plants work in a ratio of 3: 1 and worse, which corresponds to a yield of 25% and less.
  • a small-scale system is a so-called "point-of-use" system that is installed directly at the end user, for example in restaurants or private households, and produces permeate volumes of about 20 l to about 1000 l per day for example, in EP 0 567 751 B1.
  • these permeate pumps have only a single-acting membrane, whereby one can only by using at least 2 such pumps can guarantee back-up-free permeate production.
  • the invention has for its object to provide a reverse osmosis system available that can be operated with the highest possible performance.
  • the invention therefore proposes a small-volume reverse osmosis system with a reverse osmosis module (3), a concentrate line leading from the reverse osmosis module (3) to an outlet line, a permeate line leading from the reverse osmosis module to a storage tank (5), and a permeate pump connected to the concentrate line and to the permeate line, to be equipped with a permeate pump (4) which is designed as a double-membrane pump which has two interconnected membranes (12) each arranged in a separate pump chamber, each membrane (12) both with concentrate and permeate is acted upon, and wherein the concentrate and Permeatan say on the one hand and the connecting elements of the membranes (12) on the other hand are arranged such that the membranes (12) are in opposite directions, wherein the suction pressure of the permeate side by limiting the amount of concentrate or by limiting the permeate amount on the outlet line (3 6) of the permeate pump is controlled.
  • the suction pressure of the pump is controlled by a flow regulator, which regulates the driving force of the pump so that a desired suction pressure is not undershot.
  • a flow restrictor or an actual suction pressure regulator can be used.
  • a yield of the reverse osmosis plant of about 50%.
  • the suction pressure can be regulated up to the evaporation pressure, with a suction pressure of - 0.5 bar is optimal according to the current state of knowledge.
  • the proposed double acting permeate pump increases the differential pressure which acts across the membrane of the reverse osmosis module. For example, at 2.5 bar line pressure acts on the reverse osmosis module, a differential pressure of 3 bar. This increases the performance of the system.
  • the abovementioned small-volume reverse osmosis system may include a suction pressure regulator (19) which, depending on the suction pressure of the permeate side, selectively limits the amount of concentrate on the inflow side (18) or the outflow side (16).
  • the permeate pump (4) can also be equipped with a bypass line (8) between the reverse osmosis module (3) and the outlet line (16).
  • the permeate pump or parts of the permeate pump can be implemented in the body of a so-called manifold unit.
  • Manifold unit is referred to here a small-volume reverse osmosis system in which important communication paths, lines and components in a common block as a plastic injection molded part and / or Spanbined is made of one or more parts. Characteristic of such a system is that, as a rule, there are hardly any fittings and cable connections between the otherwise usually separate assemblies and thus the assembly effort is kept small.
  • the small-volume reverse osmosis system can also be configured such that the permeate pump can optionally be connected to the raw water instead of to the concentrate.
  • the small-volume reverse osmosis system can also be designed such that air or oxygen is supplied to the suction line, for example, in order to create an air cushion in a membrane-free storage tank. to get right and to dispense with the otherwise usually present in the storage tank separation membrane between the air and the water side.
  • air or oxygen is supplied to the suction line, for example, in order to create an air cushion in a membrane-free storage tank. to get right and to dispense with the otherwise usually present in the storage tank separation membrane between the air and the water side.
  • the present invention is next to a designed as a double membrane pump permeate a small-volume reverse osmosis plant, which has two interconnected each arranged in a separate pump chamber membranes, each membrane is acted upon both concentrate and permeate, and wherein the concentrate and Permeate connections on the one hand and the connecting elements of the membranes on the other hand are arranged such that the membranes are in opposite directions, the suction pressure of the permeate side is controlled by limiting the amount of concentrate or by limiting the permeate amount on the outlet.
  • the permeate pump according to the invention can be equipped in a preferred embodiment with a suction pressure regulator, which limits the amount of concentrate optionally on the inflow side or the outflow side depending on the suction pressure of the permeate side.
  • the permeate pump described above can likewise be equipped according to the invention in an alternative embodiment with a suction pressure regulator, which limits the amount of meat on the outlet line as a function of the suction pressure of the permeate side.
  • Fig. 1 a basic embodiment of the small-volume reverse osmosis system
  • FIG. 2 shows a detailed illustration in the basic structure of a double membrane pump which can be used in the system of FIG.
  • Fig. 1, 1 denotes a prefilter, is guided in accordance with the indicated arrow direction raw water, for example, from a public drinking water supply network.
  • the filtered raw water passes to a hydraulic shut-off valve 2.
  • This valve uses the pressure in the storage tank as a reference to the raw water pressure and shuts off the water supply to the system when the storage tank carries about 90% of the line pressure. The valve switches back to passage after a certain amount has been withdrawn from the storage tank. From there, the raw water passes to the reverse osmosis module 3.
  • the permeate filtered through the membrane in the reverse osmosis module 3 is conveyed via a permeate pump 4 into the storage tank 5. From there it can be removed via the secondary filter 6 on the removal tap 7.
  • the accumulating at the reverse osmosis module 3 concentrate is used on the one hand to drive the permeate 4, and fed to the other via a compensation line 8 and a concentrate regulator 9 the wastewater.
  • the concentrate regulator 9 also serves as a pressure holding valve for the reverse osmosis module 3.
  • the permeate pump 4 operates as follows.
  • the permeate filtered through the membrane in the reverse osmosis module 3 alternately fills the permeate chambers 10 of the permeate pump 4 via the pump valves 11, deflecting the membranes 12 to the left or right.
  • the control valves 13 in this case mutually control the drive so that the pump half is to eject the permeate is pressurized from the concentrate side, while on the other pump side, the pump chamber fills and the concentrate is ejected.
  • the concentrate present in the chambers 14 flows through the respectively open valve 15 into the outlet line 16. This process is ended by reversing the valves 13 and 15 when the membranes 12 have moved completely to the left or right. This is achieved by a sensory connection between the valves 13 and 15 and the membranes 12.
  • the quantity of drive medium must be limited to suit the permeate capacity of the system.
  • this is achieved automatically by a pressure regulator 19.
  • the pressure regulator regulates the concentrate flow of the plant in reference to the suction pressure of the pump, whereby e.g. a value of -0.5 bar can be maintained. These -0.5 bar are then available to the membrane module 3 as an additional differential pressure.
  • the suction pressure can be used to supply additives, such as mineral additives or cleaning or disinfecting agents in the permeate suction line 20, to the permeate.
  • Fig. 2 the basic structure of the double-membrane permeate 4 is shown schematically: Two membranes 12 each separate the chambers 10 of the chambers 14 and are connected to each other by means of a connecting rod 21.
  • the connecting rod 21 is sealed at the seals 22 to the hollow space 23.
  • Fig. 2 shows a middle position of the two membranes 12, which can be deflected by their deformability from the illustrated center position until their movement is limited to the right or left by the contour of the cavities 10 and 14 or by other suitable stops.
  • Permeate is fed to the two outer chambers 10, wherein the corresponding permeate inlets are characterized with their pump input valves in the double-membrane permeate 4 with 24 and are summarized in parallel at the pump inlet 25.
  • permeate outlets 26 with their pump outlet valves are indicated, via which the permeate is blown out via the common permeate outlet 27 out of the double-membrane permeate pump 4 and conveyed to the storage tank 5.
  • the drive of the membranes 12 is carried out by concentrate, wherein the concentrate is guided into the chambers 14. Corresponding concentrate lines are indicated at 28.
  • a spool 29 can be articulated via the spring element 30, the lever 31 and the connecting rod 32 of the connecting rod 21 of the membranes 12.
  • the lever 31 is mounted for this purpose in the fulcrum 33.
  • the spool 29 is in operation either the left or right stop in the cavity 23, wherein he connects one of the concentrate lines 28 with the concentrate concentrate 34 and thereby opens the other concentrate line 28 to the cavity 23.
  • the concentrate can flow continuously through the concentrate outlet 35.
  • a flow regulator which is designed either in flow suitable for system performance, or which in reference to the permeate suction pressure as described the Concentrate throughput regulates.
  • These systems can either be installed internally in the pump or connected externally. Due to the coupled by the connecting rod 21 movement of the two membranes 12, in the chamber 14, in which concentrate is introduced through one of the concentrate lines 28, the membrane 12 deflected by displacing the permeate located in the respective chamber 10, to possibly almost all permeate this cavity 10 is displaced. Subsequently, the spool 28 is switched to the opposite position.
  • the tasks of this switching mechanism could also be controlled externally, for example by the position of the connecting rod 21 is detected by sensors and the sensor transmits a corresponding switching signal to the system control when the membranes 12 are deflected correspondingly far.
  • the plant control would then pressurize the respective other concentrate chamber 14 via electrically controllable valves.
  • the concentrate outlet 35 advantageously connects to the double membrane permeate pump 4 from above.
  • a certain leakage flow in the region of the Steuerschie- 29 is set from the concentrate concentrate 34 to the cavity 23 via a flow regulator, so that a steady concentrate flow to the outlet 35 is ensured and thus a continuous flow through the reverse osmosis module 4 is ensured.

Landscapes

  • Engineering & Computer Science (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Nanotechnology (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Hydrology & Water Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Clinical Laboratory Science (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

L'invention concerne une installation d'osmose inverse en petites quantités, comprenant un module d'osmose inverse, un conduit de concentré, partant du module d'osmose inverse pour aboutir à un conduit de sortie, un conduit de perméat, partant du module d'osmose inverse pour aboutir à un réservoir de stockage, ainsi qu'une pompe de perméat raccordée au conduit de concentré et au conduit de perméat, installation caractérisée en ce que la pompe de perméat est réalisée sous la forme d'une pompe à double membrane, présentant deux membranes reliées entre elles, agencées dans une chambre de pompage distincte, en ce que chaque membrane est alimentée par un concentré et par un perméat, et en ce que les raccordements de concentré et de perméat d'une part, et les éléments de raccordement des membranes d'autre part, sont agencés de telle façon que les membranes soient actives en des déplacements opposés, et en ce que la pression d'aspiration du côté du perméat est commandée en limitant la quantité de concentré, ou en limitant la quantité de perméat dans le conduit de sortie.
PCT/EP2007/053278 2006-04-04 2007-04-03 Installation d'osmose inverse en petites quantités, comprenant une pompe à perméat à double membrane Ceased WO2007115987A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006015675.7 2006-04-04
DE102006015675A DE102006015675A1 (de) 2006-04-04 2006-04-04 Kleinmengen-Umkehrosmose-Anlage mit Doppelmembran-Permeatpumpe

Publications (1)

Publication Number Publication Date
WO2007115987A1 true WO2007115987A1 (fr) 2007-10-18

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PCT/EP2007/053278 Ceased WO2007115987A1 (fr) 2006-04-04 2007-04-03 Installation d'osmose inverse en petites quantités, comprenant une pompe à perméat à double membrane

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Country Link
DE (1) DE102006015675A1 (fr)
WO (1) WO2007115987A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102947588A (zh) * 2010-03-19 2013-02-27 伊利诺斯器械工程公司 偏心连接
CN111188618A (zh) * 2020-01-17 2020-05-22 江苏科技大学 一种深海采矿提升泵
CN111321021A (zh) * 2018-12-14 2020-06-23 乔治洛德方法研究和开发液化空气有限公司 利用调节的甲烷浓度通过膜渗透处理气流的设备和方法

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2244813A4 (fr) * 2008-01-28 2013-01-23 Everpure Llc Système d'osmose inverse
US20100215519A1 (en) * 2009-02-25 2010-08-26 Idex Aodd, Inc. Air operated double diaphragm over center valve pump
ITMI20110732A1 (it) * 2011-05-02 2012-11-03 Vecchi Gaetano S R L De Impianto per il trattamento dell'acqua o di liquidi in genere con membrane semipermeabili ad osmosi inversa o a nanofiltrazione.
RU2606986C2 (ru) 2014-10-27 2017-01-10 Закрытое Акционерное Общество "Аквафор Продакшн" (Зао "Аквафор Продакшн") Система очистки жидкости
RU2614287C2 (ru) 2015-09-02 2017-03-24 Закрытое Акционерное Общество "Аквафор Продакшн" (Зао "Аквафор Продакшн") Система очистки жидкости
RU2628389C2 (ru) 2015-09-02 2017-08-16 Закрытое Акционерное Общество "Аквафор Продакшн" (Зао "Аквафор Продакшн") Способ очистки жидкости
DE102021001891A1 (de) 2021-04-01 2022-10-06 Ilja Dzampajev Vorratsbehälter für flüssigkeitsbevorratende Anlagen

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DE2745348A1 (de) * 1976-10-14 1978-04-20 Gambro Ab Vorrichtung zur messung von ultrafiltration
US5232352A (en) * 1992-04-06 1993-08-03 Holcomb Corporation Fluid activated double diaphragm pump
US5460716A (en) * 1993-03-11 1995-10-24 Wapura Trinkwassereinigungs Gmbh Reverse osmosis water purification system having a permeate diaphragm pump
WO1995030472A1 (fr) * 1994-05-09 1995-11-16 Aquatec Water Systems, Inc. Pompe a permeat a osmose inverse
US5653877A (en) * 1992-12-09 1997-08-05 Fm Mark Electronics Incorporated Water purification system having multi-pass ultraviolet radiation and reverse osmosis chambers
DE19748997A1 (de) * 1997-11-06 1999-05-20 Schilling Chemie Gmbh U Produk Umkehrosmoseanlage und Verfahren zum Betrieb einer Umkehrosmoseanlage
US6068764A (en) * 1998-03-03 2000-05-30 Chau; Yiu Chau Reverse osmosis pump and shut off valve
US20030012668A1 (en) * 2001-07-11 2003-01-16 Simmons John M. Pneumatic reciprocating pump
US20050031467A1 (en) * 2003-08-07 2005-02-10 Caldwell Denise M. Fluid driven pump with improved exhaust port arrangement

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GB481270A (en) * 1936-10-07 1938-03-08 Ettore Caretta Improved diaphragm pump with direct actuation by fluid
US4480969A (en) * 1981-11-12 1984-11-06 The Coca-Cola Company Fluid operated double acting diaphragm pump housing and method
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Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2745348A1 (de) * 1976-10-14 1978-04-20 Gambro Ab Vorrichtung zur messung von ultrafiltration
US5232352A (en) * 1992-04-06 1993-08-03 Holcomb Corporation Fluid activated double diaphragm pump
US5653877A (en) * 1992-12-09 1997-08-05 Fm Mark Electronics Incorporated Water purification system having multi-pass ultraviolet radiation and reverse osmosis chambers
US5460716A (en) * 1993-03-11 1995-10-24 Wapura Trinkwassereinigungs Gmbh Reverse osmosis water purification system having a permeate diaphragm pump
WO1995030472A1 (fr) * 1994-05-09 1995-11-16 Aquatec Water Systems, Inc. Pompe a permeat a osmose inverse
DE19748997A1 (de) * 1997-11-06 1999-05-20 Schilling Chemie Gmbh U Produk Umkehrosmoseanlage und Verfahren zum Betrieb einer Umkehrosmoseanlage
US6068764A (en) * 1998-03-03 2000-05-30 Chau; Yiu Chau Reverse osmosis pump and shut off valve
US20030012668A1 (en) * 2001-07-11 2003-01-16 Simmons John M. Pneumatic reciprocating pump
US20050031467A1 (en) * 2003-08-07 2005-02-10 Caldwell Denise M. Fluid driven pump with improved exhaust port arrangement

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102947588A (zh) * 2010-03-19 2013-02-27 伊利诺斯器械工程公司 偏心连接
CN102947588B (zh) * 2010-03-19 2015-11-25 菲尼逊品牌控股有限公司 压缩空气驱动的双隔膜泵
CN111321021A (zh) * 2018-12-14 2020-06-23 乔治洛德方法研究和开发液化空气有限公司 利用调节的甲烷浓度通过膜渗透处理气流的设备和方法
CN111188618A (zh) * 2020-01-17 2020-05-22 江苏科技大学 一种深海采矿提升泵

Also Published As

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