DE4118088A1 - Continuous selective water cleaning - uses adsorption on separated concentrate to be mixed with separated permeate for selective removal of small concentrations of matter - Google Patents
Continuous selective water cleaning - uses adsorption on separated concentrate to be mixed with separated permeate for selective removal of small concentrations of matterInfo
- Publication number
- DE4118088A1 DE4118088A1 DE4118088A DE4118088A DE4118088A1 DE 4118088 A1 DE4118088 A1 DE 4118088A1 DE 4118088 A DE4118088 A DE 4118088A DE 4118088 A DE4118088 A DE 4118088A DE 4118088 A1 DE4118088 A1 DE 4118088A1
- Authority
- DE
- Germany
- Prior art keywords
- stage
- concentrate
- permeate
- matter
- separated
- 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.)
- Withdrawn
Links
- 239000012141 concentrate Substances 0.000 title claims abstract description 17
- 239000012466 permeate Substances 0.000 title claims abstract description 9
- 238000001179 sorption measurement Methods 0.000 title claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title abstract description 14
- 238000004140 cleaning Methods 0.000 title 1
- 238000000034 method Methods 0.000 claims abstract description 18
- 239000007788 liquid Substances 0.000 claims abstract description 17
- 239000000463 material Substances 0.000 claims abstract description 9
- 238000001223 reverse osmosis Methods 0.000 claims abstract description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 5
- 238000000909 electrodialysis Methods 0.000 claims abstract description 5
- 230000008569 process Effects 0.000 claims abstract description 5
- 238000000108 ultra-filtration Methods 0.000 claims abstract description 3
- 239000004615 ingredient Substances 0.000 claims description 14
- 238000000926 separation method Methods 0.000 claims description 10
- 238000002360 preparation method Methods 0.000 claims description 9
- 239000003463 adsorbent Substances 0.000 claims description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 2
- 230000008901 benefit Effects 0.000 abstract description 5
- 229910052500 inorganic mineral Inorganic materials 0.000 abstract description 5
- 239000011707 mineral Substances 0.000 abstract description 5
- 229910001385 heavy metal Inorganic materials 0.000 abstract description 3
- 239000000575 pesticide Substances 0.000 abstract description 3
- 230000000717 retained effect Effects 0.000 abstract description 2
- 239000012530 fluid Substances 0.000 abstract 2
- 229910052799 carbon Inorganic materials 0.000 abstract 1
- 239000003795 chemical substances by application Substances 0.000 abstract 1
- 239000003651 drinking water Substances 0.000 description 3
- 235000020188 drinking water Nutrition 0.000 description 3
- 239000012528 membrane Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 150000008280 chlorinated hydrocarbons Chemical class 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 235000013372 meat Nutrition 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
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
- B01D61/025—Reverse osmosis; Hyperfiltration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
- B01D17/02—Separation of non-miscible liquids
- B01D17/0202—Separation of non-miscible liquids by ab- or adsorption
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
- B01D17/08—Thickening liquid suspensions by filtration
- B01D17/085—Thickening liquid suspensions by filtration with membranes
-
- 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
-
- 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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
-
- 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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
-
- 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
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/469—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis
-
- 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
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/469—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis
- C02F1/4693—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis electrodialysis
Landscapes
- Chemical & Material Sciences (AREA)
- Water Supply & Treatment (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Health & Medical Sciences (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Molecular Biology (AREA)
- Analytical Chemistry (AREA)
- Nanotechnology (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Water Treatment By Sorption (AREA)
Abstract
Description
Die Erfindung betrifft ein Verfahren zur kontinuierlichen Ent fernung von in geringer Konzentration vorhandenen Inhaltsstof fen aus einer Flüssigkeit in einer insbesondere nach dem Ad sorptionsprinzip arbeitenden Aufbereitungsstufe.The invention relates to a method for continuous Ent removal of ingredients present in low concentration fen from a liquid in a particular after the ad sorption principle working preparation stage.
Zur Entfernung von Inhaltsstoffen aus Flüssigkeiten sind zahl reiche Aufbereitungsverfahren bekannt. Als wichtigste können hier die Sentimentation, die Filtration und die Adsorption genannt werden. Nachteilig ist bei diesen Verfahren anzusehen, daß ihre Effektivität bei geringer Konzentration der zu ent fernenden Inhaltsstoffe gering ist. Es sind weiterhin Verfah ren wie Umkehrosmose, Elektrodialyse und Ultrafiltration zur Entfernung von Inhaltsstoffen aus Flüssigkeiten bekannt. Diese Verfahren sind aber für viele Anwendungsfälle nicht genügend selektiv, so daß neben den zu entfernenden Inhaltsstoffen auch andere Inhaltsstoffe abgetrennt werden, deren Abtrennung un erwünscht ist. So wird beispielsweise bei der Wasseraufberei tung in Umkehrosmose- oder Elektrodialyseanlagen zur Entfer nung von Störstoffen auch die Mineralstoffzusammensetzung des Wassers sehr stark geändert. Ein Nachteil der genannten Trenn verfahren liegt häufig auch in der schwierigen Entsorgung des anfallenden Konzentratstroms.To remove ingredients from liquids are number known processing methods. The most important can here the sentimentation, the filtration and the adsorption to be named. A disadvantage of these processes is that that their effectiveness at low concentration ent distant ingredients is low. There are still proceedings such as reverse osmosis, electrodialysis and ultrafiltration Removal of ingredients from liquids known. These However, procedures are not sufficient for many applications selective, so that in addition to the ingredients to be removed other ingredients are separated, their separation un is desired. For example, in water treatment in reverse osmosis or electrodialysis systems for removal the mineral composition of the Water changed very much. A disadvantage of the separation mentioned often lies in the difficult disposal of the resulting concentrate flow.
Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren der eingangs genannten Art hinsichtlich seiner Effektivität und Wirtschaftlichkeit zu verbessern. The invention has for its object a method of type mentioned in terms of its effectiveness and Improve economy.
Zur Lösung dieser Aufgabe ist erfindungsgemäß vorgesehen, daß die Flüssigkeit vor dem Eintritt in die Aufbereitungsstufe in einer Trennstufe durch Umkehrosmose, Elektrodialyse oder Ul trafiltration in ein an Inhaltsstoffen angereichertes Konzen trat und ein gereinigtes Permeat getrennt wird und daß das Konzentrat in der Aufbereitungsstufe aufbereitet und das Per meat unter Umgehung der Aufbereitungsstufe dem aufbereiteten Konzentrat zugemischt wird.To solve this problem, the invention provides that the liquid before entering the treatment stage in a separation stage by reverse osmosis, electrodialysis or ul trafiltration in a concentrate enriched with ingredients entered and a purified permeate is separated and that the Concentrate processed in the preparation stage and the per meat bypassing the preparation stage of the prepared one Concentrate is added.
Das erfindungsgemäße Verfahren hat den Vorteil, daß nur ein Teil des aufzubereitenden Flüssigkeitstroms in die Aufberei tungsstufe gelangt, wodurch der Aufwand zur selektiven Entfer nung bestimmter Inhaltsstoffe aus der Flüssigkeit reduziert wird. Weiterhin ist von Vorteil, daß die zu entfernenden In haltsstoffe in dem der Aufbereitungsstufe zugeführten Konzen trat in erheblicher höherer Konzentration vorliegen als in der aufzubereitenden Flüssigkeit. Hierdurch wird die Effektivität der Aufbereitungsstufe gesteigert. So kann beispielsweise der Einsatz von Adsorbermaterial bei einer Aufkonzentrierung des zu adsorbierenden Inhaltsstoffs stark verringert werden und der durch die Adsorptionsstufe geleitete Flüssigkeitsstrom bis auf 10% des eingangs zugeführten Flüssigkeitsstroms reduziert werden.The process according to the invention has the advantage that only one Part of the liquid flow to be treated in the preparation tion stage, which means that the effort for selective removal reduced certain ingredients from the liquid becomes. Another advantage is that the In. To be removed Ingredients in the concentrate supplied to the processing stage occurred in a significantly higher concentration than in the liquid to be treated. This will make it more effective the processing level increased. For example, the Use of adsorber material when the to be adsorbed ingredient greatly reduced and the liquid flow passed through the adsorption stage to reduced to 10% of the incoming liquid flow will.
Wird das erfindungsgemäße Verfahren zur Trinkwasseraufberei tung eingesetzt, wobei dem aufzubereitenden Rohwasser in der Aufbereitungsstufe bestimmte Störstoffe entzogen werden, so ergibt sich weiterhin der Vorteil, daß die Mineralstoffzusam mensetzung des Reinwassers weitgehend unverändert bleiben kann. Hierbei ist vor allem die Aufbereitung des Konzentrat stroms durch Adsorption besonders geeignet, da Adsorbermate rialien die natürliche Zusammensetzung der Wasserinhaltsstoffe nur spezifisch ändern. Mit dem erfindungsgemäßen Verfahren läßt sich auch die Beladung von Adsorbenzien in der Aufberei tungsstufe um ein Vielfaches steigern, so daß die Regenera tions- oder Anschaffungskosten für das Adsorptionsmaterial vermindert werden. Besonders bei der Entfernung von Spuren stoffen, wie Pestiziden, Chlorkohlenwasserstoffen oder Schwer metallen, in der Trinkwasseraufbereitung lassen sich bisher keine ausreichenden Beladungen auf Adsorbermaterialien erzie len. Durch die Aufkonzentrierung der Spurenstoffe nach dem erfindungsgemäßen Verfahren wird diesem Nachteil begegnet.Will the inventive method for drinking water treatment tion used, the raw water to be treated in the Processing stage certain contaminants are withdrawn, so there is also the advantage that the minerals together The purity of the pure water remains largely unchanged can. The main thing here is the preparation of the concentrate electricity through adsorption particularly suitable, because adsorber mate rialien the natural composition of the water ingredients only change specifically. With the method according to the invention the loading of adsorbents can also be carried out in the processing plant tion level increase many times over, so that the Regenera tion or acquisition costs for the adsorbent material can be reduced. Especially when removing traces substances such as pesticides, chlorinated hydrocarbons or heavy metals, so far in drinking water treatment do not generate sufficient loads on adsorber materials len. By concentrating the trace substances after the The method according to the invention addresses this disadvantage.
Den beschriebenen Vorteilen des erfindungsgemäßen Verfahrens steht zwar der Nachteil eines weiteren Verfahrensschritts ge genüber. Dieser Nachteil wird aber durch die Verringerung des Aufwands für die Aufbereitungsstufe und die Verbesserung der Leistung aufgewogen. Auch lassen neuere Entwicklungen im Be reich der Niederdruck-Membranen den Energieverbrauch für den notwendigen Druckaufbau in der Trennstufe geringer werden.The described advantages of the method according to the invention there is the disadvantage of a further process step ge opposite. This disadvantage is caused by the reduction in Effort for the preparation stage and the improvement of the Performance weighed. Also recent developments in the Be of low pressure membranes the energy consumption for the necessary pressure build-up in the separation stage become lower.
Erfindungsgemäß kann weiterhin vorgesehen sein, daß in einer Vorbehandlungsstufe die der Trennstufe zugeführte Flüssigkeit vorbehandelt wird. Ferner kann die gemischte Flüssigkeit aus Aufbereitungsstufe und Trennstufe einer Nachbehandlung unter zogen werden. Bevorzugte Adsorbenzien für die Aufbereitungs stufe sind Aktivkohle oder Aktivtonerde.According to the invention it can further be provided that in a Pretreatment stage the liquid supplied to the separation stage is pretreated. Furthermore, the mixed liquid can Preparation stage and separation stage of an aftertreatment under be drawn. Preferred adsorbents for processing level are activated carbon or activated alumina.
Eine bevorzugte Anwendung des erfindungsgemäßen Verfahrens wird anhand eines in der Zeichnung dargestellten Blockfließ bilds im folgenden näher erläutert.A preferred application of the method according to the invention is based on a block flow shown in the drawing picture explained in more detail below.
Das Blockfließbild zeigt eine Anlage zur Aufbereitung von Trinkwasser. Das bei 1 zugeführte Rohwasser wird nach einer Vorbehandlung in einer Vorbehandlungsstufe 2 einer Trennstufe 3 zugeführt, die nach dem Prinzip der Umkehrosmose arbeitet, wobei ein großer Teil des Wassers (80-90%) unter Druck Membranen als Permeat 4 passiert, während ein kleinerer Teil des Rohwassers und die darin aufkonzentrierten Inhaltsstoffe als Konzentrat von den Membranen zurückgehalten wird. Das Kon zentrat 5 wird einer Aufbereitungsstufe 6 zugeführt, in der mit Hilfe von Adsorbermaterial aufkonzentrierte Schadstoffe, wie CKW′s, Pestizide, Schwermetalle, adsorbiert werden, wäh rend die Mineralstoffe die Aufbereitungsstufe 6 passieren. Das aufbereitete Konzentrat 7 und das Permeat 4 werden wieder ver einigt und in einer Nachbehandlungsstufe 8 nachbehandelt. Bei 9 wird das Reinwasser aus der Nachbehandlungsstufe abgeführt.The block flow diagram shows a plant for the treatment of drinking water. The raw water supplied at 1 is fed after a pretreatment in a pretreatment stage 2 to a separation stage 3 , which works on the principle of reverse osmosis, whereby a large part of the water (80-90%) passes through membranes under pressure as permeate 4 , while a smaller part of the raw water and the ingredients concentrated therein is retained as a concentrate by the membranes. The concentrate 5 is fed to a processing stage 6 , in which concentrated pollutants, such as CHCs, pesticides, heavy metals, are adsorbed with the aid of adsorber material, while the minerals pass the processing stage 6 . The processed concentrate 7 and the permeate 4 are combined again and post-treated in a post-treatment stage 8 . At 9 , the pure water is removed from the aftertreatment stage.
Bei dem beschriebenen Verfahren ist der Wasserverlust gering und die Mineralstoffzusammensetzung des Wassers bleibt weitge hend unverändert. Die Ausnutzung der Adsorberkapazität der Adsorbermaterialien ist hoch.With the method described, the water loss is low and the mineral composition of the water remains wide unchanged. The exploitation of the adsorber capacity Adsorber materials are high.
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4118088A DE4118088A1 (en) | 1991-06-01 | 1991-06-01 | Continuous selective water cleaning - uses adsorption on separated concentrate to be mixed with separated permeate for selective removal of small concentrations of matter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4118088A DE4118088A1 (en) | 1991-06-01 | 1991-06-01 | Continuous selective water cleaning - uses adsorption on separated concentrate to be mixed with separated permeate for selective removal of small concentrations of matter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE4118088A1 true DE4118088A1 (en) | 1992-12-03 |
Family
ID=6433033
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE4118088A Withdrawn DE4118088A1 (en) | 1991-06-01 | 1991-06-01 | Continuous selective water cleaning - uses adsorption on separated concentrate to be mixed with separated permeate for selective removal of small concentrations of matter |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE4118088A1 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4338569A1 (en) * | 1992-11-06 | 1994-05-26 | Geesthacht Gkss Forschung | Sepn of esp organic matter from liq - by adsorption preceded by membrane sepn |
| DE4325037A1 (en) * | 1993-07-26 | 1995-02-02 | Andreas Landmann | Process water recycling plant |
| DE19512688A1 (en) * | 1995-04-07 | 1996-10-10 | Membrain Gmbh | Condensation of vapours from beer brewing processes |
| EP0806399A1 (en) * | 1996-05-10 | 1997-11-12 | Wehrle-Werk Ag | Process and device for purifying waste water |
| WO2007010549A1 (en) * | 2005-07-20 | 2007-01-25 | Mahesh Gupta | A household reverse osmosis based drinking water purifier |
| RU2322403C2 (en) * | 2005-10-25 | 2008-04-20 | Общество с ограниченной ответственностью "Энергоэкосервис" | System to prepare make-up water to be added to heat supply system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2623210B2 (en) * | 1975-06-05 | 1979-06-21 | Creusot-Loire, Paris | |
| DE8111288U1 (en) * | 1981-04-14 | 1982-12-16 | Dornier System Gmbh, 7990 Friedrichshafen | "DEVICE FOR IMPLEMENTING PROCESS PROCESSES" |
| SU1542920A1 (en) * | 1987-06-23 | 1990-02-15 | Go Inzh Str I Im V P Chkalova | Method of producing extra-pure water |
| DE3901005A1 (en) * | 1989-01-14 | 1990-07-19 | Rheinische Braunkohlenw Ag | DEVICE AND METHOD FOR PURIFYING WASTE WATER |
| DE4116278A1 (en) * | 1990-05-22 | 1991-11-28 | Interatom | Removal of nitrate(s) from drinking water using ion exchange - regeneration pipe connects anion and cation exchange units and regeneration liq. is produced by reverse osmosis |
-
1991
- 1991-06-01 DE DE4118088A patent/DE4118088A1/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2623210B2 (en) * | 1975-06-05 | 1979-06-21 | Creusot-Loire, Paris | |
| DE8111288U1 (en) * | 1981-04-14 | 1982-12-16 | Dornier System Gmbh, 7990 Friedrichshafen | "DEVICE FOR IMPLEMENTING PROCESS PROCESSES" |
| SU1542920A1 (en) * | 1987-06-23 | 1990-02-15 | Go Inzh Str I Im V P Chkalova | Method of producing extra-pure water |
| DE3901005A1 (en) * | 1989-01-14 | 1990-07-19 | Rheinische Braunkohlenw Ag | DEVICE AND METHOD FOR PURIFYING WASTE WATER |
| DE4116278A1 (en) * | 1990-05-22 | 1991-11-28 | Interatom | Removal of nitrate(s) from drinking water using ion exchange - regeneration pipe connects anion and cation exchange units and regeneration liq. is produced by reverse osmosis |
Non-Patent Citations (2)
| Title |
|---|
| PÖPEL, H.J. * |
| u.a.: Aktivkohleanwendung in der Ab- wasserreinigung. In: Korrespondenz Abwasser 35, 3/88, S.187-255 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4338569A1 (en) * | 1992-11-06 | 1994-05-26 | Geesthacht Gkss Forschung | Sepn of esp organic matter from liq - by adsorption preceded by membrane sepn |
| DE4325037A1 (en) * | 1993-07-26 | 1995-02-02 | Andreas Landmann | Process water recycling plant |
| DE19512688A1 (en) * | 1995-04-07 | 1996-10-10 | Membrain Gmbh | Condensation of vapours from beer brewing processes |
| DE19512688C2 (en) * | 1995-04-07 | 1998-05-28 | Zenon Gmbh Membranen Anlagen U | Process for disposing of vapors generated during malting and / or brewing beer |
| EP0806399A1 (en) * | 1996-05-10 | 1997-11-12 | Wehrle-Werk Ag | Process and device for purifying waste water |
| US6080317A (en) * | 1996-05-10 | 2000-06-27 | Wehrle-Werk Ag | Process and apparatus for the purification of waste water |
| WO2007010549A1 (en) * | 2005-07-20 | 2007-01-25 | Mahesh Gupta | A household reverse osmosis based drinking water purifier |
| RU2322403C2 (en) * | 2005-10-25 | 2008-04-20 | Общество с ограниченной ответственностью "Энергоэкосервис" | System to prepare make-up water to be added to heat supply system |
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